130-731: Interstate 17 ( I-17 ) is a north–south Interstate Highway located entirely within the US state of Arizona . I-17's southern terminus lies in Phoenix , at I-10 / US 60 and its northern terminus is in Flagstaff , at Milton Road north of I-40 . Most of I-17 is known as the Arizona Veterans Highway . In the Phoenix metropolitan area, it is mostly known as the Black Canyon Freeway , however,
260-650: A State of Deseret . The Mormon settlements provided pioneers for other settlements in the West. Salt Lake City became the hub of a "far-flung commonwealth" of Mormon settlements. With new church converts coming from the East and around the world, Church leaders often assigned groups of church members as missionaries to establish other settlements throughout the West. They developed irrigation to support fairly large pioneer populations along Utah's Wasatch front (Salt Lake City, Bountiful and Weber Valley, and Provo and Utah Valley). Throughout
390-522: A concurrency or overlap. For example, I‑75 and I‑85 share the same roadway in Atlanta ; this 7.4-mile (11.9 km) section, called the Downtown Connector , is labeled both I‑75 and I‑85. Concurrencies between Interstate and US Highway numbers are also allowed in accordance with AASHTO policy, as long as the length of the concurrency is reasonable. In rare instances, two highway designations sharing
520-590: A 28-year-old brevet lieutenant colonel, accompanied the trip "through darkest America with truck and tank," as he later described it. Some roads in the West were a "succession of dust, ruts, pits, and holes." As the landmark 1916 law expired, new legislation was passed—the Federal Aid Highway Act of 1921 (Phipps Act). This new road construction initiative once again provided for federal matching funds for road construction and improvement, $ 75 million allocated annually. Moreover, this new legislation for
650-645: A Mormon missionary for thirteen years, and a Salt Lake City newspaper owner, finally left Utah and wrote The Rocky Mountain Saints . His book gives a witnessed account of life in Utah, both the good and the bad. He finally left Utah and Mormonism after financial ruin occurred when Brigham Young sent Stenhouse to relocate to Ogden, Utah, according to Stenhouse, to take over his thriving pro-Mormon Salt Lake Telegraph newspaper. In addition to these testimonies, The Confessions of John D. Lee , written by John D. Lee—alleged "Scapegoat" for
780-588: A bridge of I-17 from Mountain View Road to Metro Parkway, serving one station at Metro Parkway . I-17 ends at Milton Road ( SR 89A ) north of I-40 in Flagstaff . The I-17 corridor roughly follows the first stagecoach route through the Black Canyon, established in 1878 between Cañon (now Black Canyon City) and Prescott. A later highway through White Spar from Wickenburg to Yarnell was improved in 1925 and incorporated into US 89 in 1926. In 1936, SR 69
910-476: A change in the numbering system as a result of a new policy adopted in 1973. Previously, letter-suffixed numbers were used for long spurs off primary routes; for example, western I‑84 was I‑80N, as it went north from I‑80 . The new policy stated, "No new divided numbers (such as I-35W and I-35E , etc.) shall be adopted." The new policy also recommended that existing divided numbers be eliminated as quickly as possible; however, an I-35W and I-35E still exist in
1040-451: A major reason for poor air quality in Utah . On March 18, 2020, Utah suffered a 5.7 magnitude earthquake originating 3.7 mi (6.0 km) northeast of Magna, near Salt Lake City. Utah is known for its natural diversity and is home to features ranging from arid deserts with dunes to thriving pine forests in mountain valleys. It is a rugged and geographically diverse state at the convergence of three distinct geological regions:
1170-576: A numbering scheme in which primary Interstates are assigned one- or two-digit numbers, and shorter routes which branch off of longer ones are assigned three-digit numbers where the last two digits match the parent route. The Interstate Highway System is partially financed through the Highway Trust Fund , which itself is funded by a combination of a federal fuel tax and transfers from the Treasury's general fund. Though federal legislation initially banned
1300-481: A proposal for an interstate highway system, eventually resulting in the enactment of the Federal-Aid Highway Act of 1956 . Unlike the earlier United States Numbered Highway System, the interstates were designed to be all freeways, with nationally unified standards for construction and signage. While some older freeways were adopted into the system, most of the routes were completely new. In dense urban areas,
1430-458: A regiment of California volunteers in 1862. Connor established Fort Douglas just 3 miles (4.8 km) east of Salt Lake City and encouraged his people to discover mineral deposits to bring more non-Mormons into the territory. Minerals were discovered in Tooele County and miners began to flock to the territory. Beginning in 1865, Utah's Black Hawk War developed into the deadliest conflict in
SECTION 10
#17330860788741560-540: A report called Toll Roads and Free Roads , "the first formal description of what became the Interstate Highway System" and, in 1944, the similarly themed Interregional Highways . The Interstate Highway System gained a champion in President Dwight D. Eisenhower, who was influenced by his experiences as a young Army officer crossing the country in the 1919 Motor Transport Corps convoy that drove in part on
1690-409: A single digit prefixed to the two-digit number of its parent Interstate Highway. Spur routes deviate from their parent and do not return; these are given an odd first digit. Circumferential and radial loop routes return to the parent, and are given an even first digit. Unlike primary Interstates, three-digit Interstates are signed as either east–west or north–south, depending on the general orientation of
1820-722: A speed limit of 45 mph (70 km/h) because it is a parkway that consists of only one lane per side of the highway. On the other hand, Interstates 15, 80, 84, and 215 in Utah have speed limits as high as 70 mph (115 km/h) within the Wasatch Front , Cedar City , and St. George areas, and I-25 in New Mexico within the Santa Fe and Las Vegas areas along with I-20 in Texas along Odessa and Midland and I-29 in North Dakota along
1950-456: A speed limit of 80 mph (130 km/h). Other Interstates in Idaho, Montana, Oklahoma, South Dakota and Wyoming also have the same high speed limits. In some areas, speed limits on Interstates can be significantly lower in areas where they traverse significantly hazardous areas. The maximum speed limit on I-90 is 50 mph (80 km/h) in downtown Cleveland because of two sharp curves with
2080-467: A suggested limit of 35 mph (55 km/h) in a heavily congested area; I-70 through Wheeling, West Virginia , has a maximum speed limit of 45 mph (70 km/h) through the Wheeling Tunnel and most of downtown Wheeling; and I-68 has a maximum speed limit of 40 mph (65 km/h) through Cumberland, Maryland , because of multiple hazards including sharp curves and narrow lanes through
2210-592: Is a landlocked state in the Mountain West subregion of the Western United States . It is one of the Four Corners states, sharing a border with Arizona , Colorado , and New Mexico . It also borders Wyoming to its northeast, Idaho to its north, and Nevada to its west. In comparison to all the U.S. states and territories, Utah, with a population of just over three million, is the 13th largest by area ,
2340-534: Is also commonly believed the Interstate Highway System was built for the sole purpose of evacuating cities in the event of nuclear warfare . While military motivations were present, the primary motivations were civilian. The numbering scheme for the Interstate Highway System was developed in 1957 by the American Association of State Highway and Transportation Officials (AASHTO). The association's present numbering policy dates back to August 10, 1973. Within
2470-622: Is just over the Nevada state line in the southern Snake Range. One of western Utah's most impressive, but least visited attractions is Notch Peak , the tallest limestone cliff in North America, located west of Delta . Much of the scenic southern and southeastern landscape (specifically the Colorado Plateau region) is sandstone , specifically Kayenta sandstone and Navajo sandstone . The Colorado River and its tributaries wind their way through
2600-405: Is only four lanes wide and is subject to frequent traffic jams on weekends as motorists travel to and from Sedona , Flagstaff , or other high country destinations. A third lane will be added in both directions between Anthem and Black Canyon City , but due to the mountainous topography north of Black Canyon City to Sunset Point, two flex lanes will be added in a separate carriageway next to
2730-533: Is the central feature of protected state and federal parks such as Arches , Bryce Canyon , Canyonlands , Capitol Reef , and Zion national parks, Cedar Breaks , Grand Staircase–Escalante , Hovenweep , and Natural Bridges national monuments, Glen Canyon National Recreation Area (site of the popular tourist destination, Lake Powell ), Dead Horse Point and Goblin Valley state parks, and Monument Valley . The Navajo Nation also extends into southeastern Utah, and
SECTION 20
#17330860788742860-526: Is the lowest point in the state, at 2,000 feet (610 m). The northernmost portion of the Mojave Desert is also located in this area. Dixie is quickly becoming a popular recreational and retirement destination, and the population is growing rapidly. Although the Wasatch Mountains end at Mount Nebo near Nephi , a complex series of mountain ranges extends south from the southern end of the range down
2990-475: Is the only state where a majority of the population belongs to a single church. The LDS Church greatly influences Utahn culture, politics, and daily life, though since the 1990s the state has become more religiously diverse as well as secular. Utah has a highly diversified economy , with major sectors including transportation, education , information technology and research, government services, mining, multi-level marketing , and tourism. Utah has been one of
3120-565: Is the only state where every county contains some national forest. Utah features a dry, semi-arid to desert climate , although its many mountains feature a large variety of climates, with the highest points in the Uinta Mountains being above the timberline . The dry weather is a result of the state's location in the rain shadow of the Sierra Nevada in California. The eastern half of
3250-460: Is the variety of its terrain . Running down the middle of the state's northern third is the Wasatch Range , which rises to heights of almost 12,000 ft (3,700 m) above sea level. Utah is home to world-renowned ski resorts made popular by light, fluffy snow and winter storms that regularly dump up to three feet of it overnight. In the state's northeastern section, running east to west, are
3380-525: Is to have the highway route extend from Tamaulipas , Mexico to Ontario , Canada. The planned I-11 will then bridge the Interstate gap between Phoenix, Arizona and Las Vegas, Nevada , and thus form part of the CANAMEX Corridor (along with I-19 , and portions of I-10 and I-15 ) between Sonora , Mexico and Alberta , Canada. Political opposition from residents canceled many freeway projects around
3510-419: The 30th most populous , and the 11th least densely populated . Urban development is mostly concentrated in two regions: the Wasatch Front in the north-central part of the state, which includes the state capital, Salt Lake City , and is home to roughly two-thirds of the population; and Washington County in the southwest, which has somewhat more than 180,000 residents. Most of the western half of Utah lies in
3640-474: The Dallas–Fort Worth metroplex in Texas, and an I-35W and I-35E that run through Minneapolis and Saint Paul , Minnesota, still exist. Additionally, due to Congressional requirements, three sections of I-69 in southern Texas will be divided into I-69W , I-69E , and I-69C (for Central). AASHTO policy allows dual numbering to provide continuity between major control points. This is referred to as
3770-595: The Domínguez–Escalante expedition —left Santa Fe in 1776, hoping to find a route to the coast of California. The expedition traveled as far north as Utah Lake and encountered the native residents. The Spanish made further explorations in the region but were not interested in colonizing the area because of its desert nature. In 1821, the year Mexico achieved its independence from Spain, the region became known as part of its territory of Alta California . European trappers and fur traders explored some areas of Utah in
3900-538: The Federal Aid Highway Act of 1956 into law. Under the act, the federal government would pay for 90 percent of the cost of construction of Interstate Highways. Each Interstate Highway was required to be a freeway with at least four lanes and no at-grade crossings. The publication in 1955 of the General Location of National System of Interstate Highways , informally known as the Yellow Book , mapped out what became
4030-603: The Grand Forks area have higher speed limits of 75 mph (120 km/h). As one of the components of the National Highway System , Interstate Highways improve the mobility of military troops to and from airports, seaports, rail terminals, and other military bases. Interstate Highways also connect to other roads that are a part of the Strategic Highway Network , a system of roads identified as critical to
Interstate 17 - Misplaced Pages Continue
4160-613: The Great Basin . Utah has been inhabited for thousands of years by various indigenous groups , such as the ancient Puebloans , the Navajo, and the Ute. The first Europeans to arrive - in the mid-16th century - were the Spanish. Because of the region's challenging geography and harsh climate, it only became a peripheral part of New Spain (and later of Mexico). Even while it was Mexican territory, many of
4290-455: The I-15 corridor, including the densely populated Wasatch Front , receives approximately 15 inches (381 mm). The Great Salt Lake Desert is the driest area of the state, with less than 5 inches (127 mm). Snowfall is common in all but the far southern valleys. Although St. George receives only about 3 inches (76 mm) per year, Salt Lake City sees about 60 inches (1,524 mm), enhanced by
4420-515: The Lincoln Highway , the first road across America. He recalled that, "The old convoy had started me thinking about good two-lane highways... the wisdom of broader ribbons across our land." Eisenhower also gained an appreciation of the Reichsautobahn system, the first "national" implementation of modern Germany's Autobahn network, as a necessary component of a national defense system while he
4550-576: The Mountain Meadow Massacre —also came out in 1877. The corroborative testimonies coming out of Utah from Mormons and former Mormons influenced Congress and the people of the United States. In the 1890 Manifesto , the LDS Church banned polygamy. When Utah applied for statehood again , it was accepted. One of the conditions for granting Utah statehood was that a ban on polygamy be written into
4680-587: The Mountain Meadows massacre . Before troops led by Albert Sidney Johnston entered the territory, Brigham Young ordered all residents of Salt Lake City to evacuate southward to Utah Valley and sent out the Nauvoo Legion to delay the government's advance. Although wagons and supplies were burned, eventually the troops arrived in 1858, and Young surrendered official control to Cumming, although most subsequent commentators claim that Young retained true power in
4810-584: The Rocky Mountains , the Great Basin , and the Colorado Plateau . Utah covers an area of 84,899 sq mi (219,890 km ). It is one of the Four Corners states and is bordered by Idaho in the north, Wyoming in the north and east, Colorado in the east, at a single point by New Mexico to the southeast, by Arizona in the south, and by Nevada in the west. Only three U.S. states (Utah, Colorado, and Wyoming) have exclusively latitude and longitude lines as boundaries. One of Utah's defining characteristics
4940-587: The Salt Lake Valley on July 24, 1847. Over the next 22 years, more than 70,000 pioneers crossed the plains and settled in Utah. For the first few years, Brigham Young and the thousands of early settlers of Salt Lake City struggled to survive. The arid desert land was deemed desirable by the Mormons as a place where they could practice their religion without harassment. Settlers buried thirty-six Native Americans in one grave after an outbreak of measles occurred during
5070-735: The U.S. government intensified due to the practice of plural marriage , or polygamy , among members of the LDS Church. The Mormons were still pushing for the establishment of a State of Deseret with the new borders of the Utah Territory. Most, if not all, of the members of the U.S. government opposed the polygamous practices of the Mormons. Members of the LDS Church were viewed as un-American and rebellious when news of their polygamous practices spread. In 1857, particularly heinous accusations of abdication of government and general immorality were leveled by former associate justice William W. Drummond, among others. The detailed reports of life in Utah caused
5200-499: The US Department of Defense . The system has also been used to facilitate evacuations in the face of hurricanes and other natural disasters. An option for maximizing traffic throughput on a highway is to reverse the flow of traffic on one side of a divider so that all lanes become outbound lanes. This procedure, known as contraflow lane reversal , has been employed several times for hurricane evacuations. After public outcry regarding
5330-464: The US Highways , which increase from east to west and north to south). This numbering system usually holds true even if the local direction of the route does not match the compass directions. Numbers divisible by five are intended to be major arteries among the primary routes, carrying traffic long distances. Primary north–south Interstates increase in number from I-5 between Canada and Mexico along
Interstate 17 - Misplaced Pages Continue
5460-536: The Uinta Mountains , which rise to heights of over 13,000 feet (4,000 m). The highest point in the state, Kings Peak , at 13,528 feet (4,123 m), lies within the Uinta Mountains. At the western base of the Wasatch Range is the Wasatch Front , a series of valleys and basins that are home to the most populous parts of the state. It stretches approximately from Brigham City at the north end to Nephi at
5590-541: The West Coast to I‑95 between Canada and Miami, Florida along the East Coast . Major west–east arterial Interstates increase in number from I-10 between Santa Monica, California , and Jacksonville, Florida , to I-90 between Seattle, Washington , and Boston, Massachusetts , with two exceptions. There are no I-50 and I-60, as routes with those numbers would likely pass through states that currently have US Highways with
5720-599: The death of Joseph Smith in 1844, Brigham Young , as president of the Quorum of the Twelve , became the leader of the LDS Church in Nauvoo, Illinois . To address the growing conflicts between his people and their neighbors, Young agreed with Illinois Governor Thomas Ford in October 1845 that the Mormons would leave by the following year. Young and the first group of Mormon pioneers reached
5850-473: The freeway status.) At the Durango Curve southwest of downtown, between the 19th Avenue and Buckeye Road interchanges, it picks up the designation Maricopa Freeway all the way to the southern terminus at the second I-10 junction. It is one of the metropolitan area's primary freeways . It has two interchanges with I-10 in Phoenix. The northwestern portion of Valley Metro 's light rail line runs over
5980-494: The least income inequality of any U.S. state. Over time and influenced by climate change , droughts in Utah have been increasing in frequency and severity, putting a further strain on Utah's water security and impacting the state's economy. The name Utah derives from the name of the Ute tribe , meaning 'people of the mountains'. However, no such word exists in the Utes' language, and
6110-855: The 20th century, the United States Congress began funding roadways through the Federal Aid Road Act of 1916 , and started an effort to construct a national road grid with the passage of the Federal Aid Highway Act of 1921 . In 1926, the United States Numbered Highway System was established, creating the first national road numbering system for cross-country travel. The roads were state-funded and maintained, and there were few national standards for road design. United States Numbered Highways ranged from two-lane country roads to multi-lane freeways. After Dwight D. Eisenhower became president in 1953, his administration developed
6240-495: The Black Canyon Freeway was built in 1950 west of downtown Phoenix and was extended to Grand Avenue in 1957. The freeway was extended to McDowell Road by 1971 and out of the Phoenix suburbs by 1974, at a cost of $ 33 million. By 1971, I-17 had been completed from Phoenix northward to Camp Verde where a short stretch had not been completed to standards. The stretch from SR 279 (now SR 260 ) north to SR 179
6370-559: The Congress Hotel in Chicago. In the plan, Mehren proposed a 50,000-mile (80,000 km) system, consisting of five east–west routes and 10 north–south routes. The system would include two percent of all roads and would pass through every state at a cost of $ 25,000 per mile ($ 16,000/km), providing commercial as well as military transport benefits. In 1919, the US Army sent an expedition across
6500-506: The Interstate Highway System. Assisting in the planning was Charles Erwin Wilson , who was still head of General Motors when President Eisenhower selected him as Secretary of Defense in January 1953. Some sections of highways that became part of the Interstate Highway System actually began construction earlier. Three states have claimed the title of first Interstate Highway. Missouri claims that
6630-485: The Interstate Highway program. The Interstates of Alaska and Puerto Rico are numbered sequentially in order of funding without regard to the rules on odd and even numbers. They also carry the prefixes A and PR , respectively. However, these highways are signed according to their local designations, not their Interstate Highway numbers. Furthermore, these routes were neither planned according to nor constructed to
SECTION 50
#17330860788746760-659: The LDS Church's first three temples in Utah, each started after but finished many years before the larger and better-known temple built in Salt Lake City was completed in 1893), as well as Parowan, Cedar City, Bluff, Moab, Vernal, Fillmore (which served as the territorial capital between 1850 and 1856), Nephi, Levan, Spanish Fork, Springville, Provo Bench (now Orem ), Pleasant Grove, American Fork, Lehi, Sandy, Murray, Jordan, Centerville, Farmington, Huntsville, Kaysville, Grantsville, Tooele, Roy, Brigham City, and many other smaller towns and settlements. Young had an expansionist view of
6890-780: The Olympic venues built along the Wasatch Front continue to be used for sporting events. Preparation for the Olympics spurred the development of the light-rail system in the Salt Lake Valley , known as TRAX , and the reconstruction of the freeway system around the city. In 1957, Utah created the Utah State Parks Commission with four parks. Today, Utah State Parks manages 43 parks and several undeveloped areas totaling over 95,000 acres (380 km ) of land and more than 1,000,000 acres (4,000 km ) of water. Utah's state parks are scattered throughout Utah, from Bear Lake State Park at
7020-644: The Pacific Ocean; he subsequently learned this body of water was a giant salt lake . After the discovery of the lake, hundreds of American and Canadian traders and trappers established trading posts in the region. In the 1830s, thousands of migrants traveling from the Eastern United States to the American West began to make stops in the region of the Great Salt Lake, then known as Lake Youta. Following
7150-775: The US to determine the difficulties that military vehicles would have on a cross-country trip. Leaving from the Ellipse near the White House on July 7, the Motor Transport Corps convoy needed 62 days to drive 3,200 miles (5,100 km) on the Lincoln Highway to the Presidio of San Francisco along the Golden Gate . The convoy suffered many setbacks and problems on the route, such as poor-quality bridges, broken crankshafts, and engines clogged with desert sand. Dwight Eisenhower , then
7280-463: The United States had taken control of New Mexico and California. The entire Southwest became U.S. territory upon the signing of the Treaty of Guadalupe Hidalgo , February 2, 1848. The treaty was ratified by the United States Senate on March 11. Learning that California and New Mexico were applying for statehood, the settlers of the Utah area (originally having planned to petition for territorial status) applied for statehood with an ambitious plan for
7410-631: The United States, including: In addition to cancellations, removals of freeways are planned: The American Association of State Highway and Transportation Officials (AASHTO) has defined a set of standards that all new Interstates must meet unless a waiver from the Federal Highway Administration (FHWA) is obtained. One almost absolute standard is the controlled access nature of the roads. With few exceptions , traffic lights (and cross traffic in general) are limited to toll booths and ramp meters (metered flow control for lane merging during rush hour ). Being freeways , Interstate Highways usually have
7540-413: The Utah region’s earliest European settlers were from the United States; notable among these were Mormons who were fleeing marginalization and persecution in the United States and arrived via the so-called Mormon Trail . In 1848, after the Mexican–American War , the region was annexed by the U.S. , becoming part of the Utah Territory , which included what later became Colorado and Nevada. Disputes between
7670-423: The Utah/Idaho border to Edge of the Cedars State Park Museum deep in the Four Corners region and everywhere in between. Utah State Parks is also home to the state's off highway vehicle office, state boating office, and the trails program. During the late 20th century, the state grew quickly. In the 1970s growth was phenomenal in the suburbs of the Wasatch Front. Sandy was one of the fastest-growing cities in
7800-412: The Utes refer to themselves as Noochee . The meaning of Utes as 'the mountain people' has been attributed to the neighboring Pueblo Indians , as well as to the Apache word Yuttahih , which means 'one that is higher up' or 'those that are higher up'. In Spanish , it was pronounced Yuta ; subsequently, English-speaking people may have adapted the word as Utah . Thousands of years before
7930-413: The act was signed, and paving started September 26, 1956. The state marked its portion of I-70 as the first project in the United States completed under the provisions of the new Federal-Aid Highway Act of 1956. The Pennsylvania Turnpike could also be considered one of the first Interstate Highways, and is nicknamed "Grandfather of the Interstate System". On October 1, 1940, 162 miles (261 km) of
SECTION 60
#17330860788748060-521: The administration of James Buchanan to send a secret military "expedition" to Utah. When the supposed rebellion should be quelled, Alfred Cumming would take the place of Brigham Young as territorial governor. The resulting conflict is known as the Utah War , nicknamed "Buchanan's Blunder" by the Mormon leaders. In September 1857, about 120 American settlers of the Baker–Fancher wagon train, en route to California from Arkansas, were murdered by Utah Territorial Militia and some Paiute Native Americans in
8190-417: The arrival of Europeans, the Ancestral Puebloans and the Fremont people lived in what is now known as Utah, some of which spoke languages of the Uto-Aztecan group. Ancestral Pueblo peoples built their homes through excavations in mountains, and the Fremont people built houses of straw before disappearing from the region around the 15th century. Another group of Native Americans, the Navajo , settled in
8320-399: The cancellation of the Somerset Freeway . This situation was remedied when the construction of the Pennsylvania Turnpike/Interstate 95 Interchange Project started in 2010 and partially opened on September 22, 2018, which was already enough to fill the gap. However, I-70 remains discontinuous in Pennsylvania , because of the lack of a direct interchange with the Pennsylvania Turnpike at
8450-406: The choice of routing destroyed many well-established neighborhoods, often intentionally as part of a program of " urban renewal ". In the two decades following the 1956 Highway Act, the construction of the freeways displaced one million people, and as a result of the many freeway revolts during this era, several planned Interstates were abandoned or re-routed to avoid urban cores. Construction of
8580-538: The city. In some locations, low speed limits are the result of lawsuits and resident demands; after holding up the completion of I-35E in St. Paul, Minnesota , for nearly 30 years in the courts, residents along the stretch of the freeway from the southern city limit to downtown successfully lobbied for a 45 mph (70 km/h) speed limit in addition to a prohibition on any vehicle weighing more than 9,000 pounds (4,100 kg) gross vehicle weight . I-93 in Franconia Notch State Park in northern New Hampshire has
8710-401: The collection of tolls, some Interstate routes are toll roads , either because they were grandfathered into the system or because subsequent legislation has allowed for tolling of Interstates in some cases. As of 2022 , about one quarter of all vehicle miles driven in the country used the Interstate Highway System, which has a total length of 48,890 miles (78,680 km). In 2022 and 2023,
8840-431: The construction and improvement of highways. The nation's revenue needs associated with World War I prevented any significant implementation of this policy, which expired in 1921. In December 1918, E. J. Mehren, a civil engineer and the editor of Engineering News-Record , presented his "A Suggested National Highway Policy and Plan" during a gathering of the State Highway Officials and Highway Industries Association at
8970-407: The contiguous United States, primary Interstates—also called main line Interstates or two-digit Interstates—are assigned numbers less than 100. While numerous exceptions do exist, there is a general scheme for numbering Interstates. Primary Interstates are assigned one- or two-digit numbers, while shorter routes (such as spurs, loops, and short connecting roads) are assigned three-digit numbers where
9100-401: The country at that time. Today, many areas of Utah continue to see boom-time growth. Northern Davis , southern and western Salt Lake , Summit , eastern Tooele , Utah , Wasatch , and Washington counties are all growing very quickly. Management of transportation and urbanization are major issues in politics, as development consumes agricultural land and wilderness areas and transportation is
9230-567: The discontinuity, but they have been blocked by local opposition, fearing a loss of business. The Interstate Highway System has been expanded numerous times. The expansions have both created new designations and extended existing designations. For example, I-49 , added to the system in the 1980s as a freeway in Louisiana , was designated as an expansion corridor, and FHWA approved the expanded route north from Lafayette, Louisiana , to Kansas City, Missouri . The freeway exists today as separate completed segments, with segments under construction or in
9360-448: The dissemination of public information. As a result, the 2005 evacuation of New Orleans, Louisiana, prior to Hurricane Katrina ran much more smoothly. According to urban legend , early regulations required that one out of every five miles of the Interstate Highway System must be built straight and flat, so as to be usable by aircraft during times of war. There is no evidence of this rule being included in any Interstate legislation. It
9490-478: The dominant Mormon community and the federal government delayed Utah's admission as a state: in 1896, after it agreed to outlaw polygamy, it was admitted as the 45th state . People from Utah are known as Utahns. Slightly over half of all Utahns are Mormons , the vast majority of whom are members of the Church of Jesus Christ of Latter-day Saints (LDS Church), which has its world headquarters in Salt Lake City; Utah
9620-559: The early 19th century from Canada and the United States. The city of Provo, Utah , was named for one Étienne Provost , who visited the area in 1825. The city of Ogden, Utah , was named after Peter Skene Ogden , a Canadian explorer who traded furs in the Weber Valley. In late 1824, Jim Bridger became the first known English-speaking person to sight the Great Salt Lake . Due to the high salinity of its waters, he thought he had found
9750-516: The eastern Great Basin. West of the Great Salt Lake , stretching to the Nevada border, lies the arid Great Salt Lake Desert . One exception to this aridity is Snake Valley , which is (relatively) lush due to large springs and wetlands fed from groundwater derived from snow melt in the Snake Range , Deep Creek Range , and other tall mountains to the west of Snake Valley. Great Basin National Park
9880-492: The eastern end of the concurrency near Breezewood . Traveling in either direction, I-70 traffic must exit the freeway and use a short stretch of US 30 (which includes a number of roadside services) to rejoin I-70. The interchange was not originally built because of a legacy federal funding rule, since relaxed, which restricted the use of federal funds to improve roads financed with tolls. Solutions have been proposed to eliminate
10010-450: The economy. Not just as a public works measure, but for future growth. Clay's committee proposed a 10-year, $ 100 billion program ($ 1.13 trillion in 2023), which would build 40,000 miles (64,000 km) of divided highways linking all American cities with a population of greater than 50,000. Eisenhower initially preferred a system consisting of toll roads , but Clay convinced Eisenhower that toll roads were not feasible outside of
10140-521: The existing southbound lanes. The lanes would be allocated depending on peak traffic direction. Gates or a similar mechanism would control access to these lanes. Construction began in 2022 and is scheduled to be completed in 2025. State Business Route 17 (also known as SR 17 Bus. ) was a former three-mile (4.8 km) business loop of I-17 that served the west side of Black Canyon City , Arizona . SR 17 Bus. followed Old Black Canyon Highway (formerly SR 69 before I-17 replaced most of
10270-488: The existing, largely non-freeway, United States Numbered Highways system. By the late 1930s, planning had expanded to a system of new superhighways. In 1938, President Franklin D. Roosevelt gave Thomas MacDonald , chief at the Bureau of Public Roads, a hand-drawn map of the United States marked with eight superhighway corridors for study. In 1939, Bureau of Public Roads Division of Information chief Herbert S. Fairbank wrote
10400-400: The fastest growing states since 2000, with the 2020 U.S. census confirming the fastest population growth in the nation since 2010. St. George was the fastest-growing metropolitan area in the United States from 2000 to 2005. Utah ranks among the overall best states in metrics such as healthcare , governance, education, and infrastructure. It has the 12th-highest median average income and
10530-426: The federal government, Interstate Highways are owned by the state in which they were built. With few exceptions , all Interstates must meet specific standards , such as having controlled access, physical barriers or median strips between lanes of oncoming traffic, breakdown lanes , avoiding at-grade intersections , no traffic lights , and complying with federal traffic sign specifications. Interstate Highways use
10660-507: The first three contracts under the new program were signed in Missouri on August 2, 1956. The first contract signed was for upgrading a section of US Route 66 to what is now designated Interstate 44 . On August 13, 1956, work began on US 40 (now I-70) in St. Charles County. Kansas claims that it was the first to start paving after the act was signed. Preliminary construction had taken place before
10790-594: The first time sought to target these funds to the construction of a national road grid of interconnected "primary highways", setting up cooperation among the various state highway planning boards. The Bureau of Public Roads asked the Army to provide a list of roads that it considered necessary for national defense. In 1922, General John J. Pershing , former head of the American Expeditionary Force in Europe during
10920-494: The freeway replaced between Phoenix and Cordes Junction. SR 69's mileposting was such that it coincided with US 89 's mileposting, which was 201.6 where the two routes intersected. When I-17 was constructed, the existing mileposting for SR 69 was retained. Due to increasing weekend traffic on I-17 between the Phoenix area and northern Arizona , ADOT plans to widen a 34-mile (55 km) section of freeway between Anthem and Sunset Point Rest Area. The current span
11050-549: The happiness of the very early Church members before polygamy. They independently published their books in 1875. These books and the lectures of Ann Eliza Young have been credited with the United States Congress's passage of anti-polygamy laws by newspapers throughout the United States, as recorded in "The Ann Eliza Young Vindicator", a pamphlet which detailed Ms. Young's travels and warm reception throughout her lecture tour. T. B. H. Stenhouse, former Utah Mormon polygamist,
11180-542: The highest speed limits in a given area. Speed limits are determined by individual states. From 1975 to 1986, the maximum speed limit on any highway in the United States was 55 miles per hour (90 km/h), in accordance with federal law. Typically, lower limits are established in Northeastern and coastal states, while higher speed limits are established in inland states west of the Mississippi River . For example,
11310-542: The highly populated coastal regions. In February 1955, Eisenhower forwarded Clay's proposal to Congress. The bill quickly won approval in the Senate, but House Democrats objected to the use of public bonds as the means to finance construction. Eisenhower and the House Democrats agreed to instead finance the system through the Highway Trust Fund , which itself would be funded by a gasoline tax. In June 1956, Eisenhower signed
11440-607: The highway now designated I‑70 and I‑76 opened between Irwin and Carlisle . The Commonwealth of Pennsylvania refers to the turnpike as the Granddaddy of the Pikes, a reference to turnpikes . Milestones in the construction of the Interstate Highway System include: The initial cost estimate for the system was $ 25 billion over 12 years; it ended up costing $ 114 billion (equivalent to $ 425 billion in 2006 or $ 618 billion in 2023 ) and took 35 years. The system
11570-454: The inefficiency of evacuating from southern Louisiana prior to Hurricane Georges ' landfall in September 1998, government officials looked towards contraflow to improve evacuation times. In Savannah, Georgia , and Charleston, South Carolina , in 1999, lanes of I-16 and I-26 were used in a contraflow configuration in anticipation of Hurricane Floyd with mixed results. In 2004, contraflow
11700-431: The last two digits match the parent route (thus, I-294 is a loop that connects at both ends to I-94 , while I-787 is a short spur route attached to I-87 ). In the numbering scheme for the primary routes, east–west highways are assigned even numbers and north–south highways are assigned odd numbers. Odd route numbers increase from west to east, and even-numbered routes increase from south to north (to avoid confusion with
11830-450: The mainline. Some auxiliary highways do not follow these guidelines, however. The Interstate Highway System also extends to Alaska , Hawaii , and Puerto Rico , even though they have no direct land connections to any other states or territories. However, their residents still pay federal fuel and tire taxes. The Interstates in Hawaii, all located on the most populous island of Oahu , carry
11960-575: The majority of eastern Utah's population lives. Economies are dominated by mining, oil shale , oil , and natural gas-drilling, ranching , and recreation . Much of eastern Utah is part of the Uintah and Ouray Indian Reservation . The most popular destination within northeastern Utah is Dinosaur National Monument near Vernal . Southwestern Utah is the lowest and hottest spot in Utah. It is known as Utah's Dixie because early settlers were able to grow some cotton there. Beaverdam Wash in far southwestern Utah
12090-528: The many mountains and valleys in northern Arizona. I-17 is known as the Black Canyon Freeway from the northern end of the Phoenix Metropolitan Area to a point 2.2 miles (3.5 km) south of The Stack interchange with I-10 northwest of Downtown Phoenix . (It is accompanied by frontage roads for most of this portion, and they carry the Black Canyon Highway name to distinguish from
12220-688: The maximum speed limit is 75 mph (120 km/h) in northern Maine, varies between 50 and 70 mph (80 and 115 km/h) from southern Maine to New Jersey, and is 50 mph (80 km/h) in New York City and the District of Columbia. Currently, rural speed limits elsewhere generally range from 65 to 80 miles per hour (105 to 130 km/h). Several portions of various highways such as I-10 and I-20 in rural western Texas, I-80 in Nevada between Fernley and Winnemucca (except around Lovelock) and portions of I-15 , I-70 , I-80 , and I-84 in Utah have
12350-404: The number of fatalities on the Interstate Highway System amounted to more than 5,000 people annually, with nearly 5,600 fatalities in 2022. The United States government's efforts to construct a national network of highways began on an ad hoc basis with the passage of the Federal Aid Road Act of 1916 , which provided $ 75 million over a five-year period for matching funds to the states for
12480-494: The official Interstate Highway standards . On one- or two-digit Interstates, the mile marker numbering almost always begins at the southern or western state line. If an Interstate originates within a state, the numbering begins from the location where the road begins in the south or west. As with all guidelines for Interstate routes, however, numerous exceptions exist. Utah Utah ( / ˈ juː t ɑː / YOO -tah , / ˈ juː t ɔː / YOO -taw )
12610-561: The original Interstate Highway System was proclaimed complete in 1992, despite deviations from the original 1956 plan and several stretches that did not fully conform with federal standards . The construction of the Interstate Highway System cost approximately $ 114 billion (equivalent to $ 618 billion in 2023). The system has continued to expand and grow as additional federal funding has provided for new routes to be added, and many future Interstate Highways are currently either being planned or under construction. Though heavily funded by
12740-633: The planning phase between them. In 1966, the FHWA designated the entire Interstate Highway System as part of the larger Pan-American Highway System, and at least two proposed Interstate expansions were initiated to help trade with Canada and Mexico spurred by the North American Free Trade Agreement (NAFTA). Long-term plans for I-69 , which currently exists in several separate completed segments (the largest of which are in Indiana and Texas ),
12870-539: The popular mid-century western film genre. From such films, most US residents recognize such natural landmarks as Delicate Arch and "the Mittens" of Monument Valley . During the 1950s, 1960s, and 1970s, with the construction of the Interstate highway system, accessibility to the southern scenic areas was made easier. Since the establishment of Alta Ski Area in 1939 and the subsequent development of several ski resorts in
13000-411: The prefix H . There are three one-digit routes in the state ( H-1 , H-2 , and H-3 ) and one auxiliary route ( H-201 ). These Interstates connect several military and naval bases together, as well as the important communities spread across Oahu, and especially within the urban core of Honolulu . Both Alaska and Puerto Rico also have public highways that receive 90 percent of their funding from
13130-610: The region around the 18th century. In the mid-18th century, other Uto-Aztecan tribes, including the Goshute , the Paiute , the Shoshone , and the Ute people, also settled in the region. These five groups were present when the first European explorers arrived. The southern Utah region was explored by the Spanish in 1540, led by Francisco Vázquez de Coronado while looking for the legendary Cíbola . A group led by two Catholic priests—sometimes called
13260-574: The remainder of the 19th century, Mormon pioneers established hundreds of other settlements in Utah, Idaho , Nevada , Arizona , Wyoming , California , Canada , and Mexico —including in Las Vegas, Nevada ; Franklin, Idaho (the first European settlement in Idaho); San Bernardino, California ; Mesa, Arizona ; Star Valley, Wyoming ; and Carson Valley, Nevada . Prominent settlements in Utah included St. George , Logan , and Manti (where settlers completed
13390-424: The route between Phoenix and Cordes Junction ) from exit 242 south of town at a diamond interchange to another diamond interchange at exit 244 north of town. The business route was subsequently transferred from state to local maintenance and because of ADOT's policy of not signing business loops on nonstate maintained roadways, the route was decommissioned in 2011. Major intersections The entire route
13520-524: The route, without regard to the route number. For instance, I-190 in Massachusetts is labeled north–south, while I-195 in New Jersey is labeled east–west. Some looped Interstate routes use inner–outer directions instead of compass directions, when the use of compass directions would create ambiguity. Due to the large number of these routes, auxiliary route numbers may be repeated in different states along
13650-419: The same numbers, which is generally disallowed under highway administration guidelines. Several two-digit numbers are shared between unconnected road segments at opposite ends of the country for various reasons. Some such highways are incomplete Interstates (such as I-69 and I-74 ) and some just happen to share route designations (such as I-76 , I-84 , I‑86 , I-87 , and I-88 ). Some of these were due to
13780-503: The same roadway are signed as traveling in opposite directions; one such wrong-way concurrency is found between Wytheville and Fort Chiswell , Virginia, where I‑81 north and I‑77 south are equivalent (with that section of road traveling almost due east), as are I‑81 south and I‑77 north. Auxiliary Interstate Highways are circumferential, radial, or spur highways that principally serve urban areas . These types of Interstate Highways are given three-digit route numbers, which consist of
13910-465: The sandstone, creating some of the world's most striking and wild terrain (the area around the confluence of the Colorado and Green Rivers was the last to be mapped in the lower 48 United States). Wind and rain have also sculpted the soft sandstone over millions of years. Canyons, gullies, arches, pinnacles, buttes, bluffs, and mesas are common sights throughout south-central and southeast Utah. This terrain
14040-539: The south end. Approximately 75 percent of the state's population lives in this corridor, and population growth is rapid. Western Utah is a mostly arid desert with a basin and range topography. Small mountain ranges and rugged terrain punctuate the landscape. The Bonneville Salt Flats are an exception, being comparatively flat as a result of once forming the bed of ancient Lake Bonneville . Great Salt Lake, Utah Lake , Sevier Lake , and Rush Lake are all remnants of this ancient freshwater lake, which once covered most of
14170-595: The southern 4.16 miles (6.69 km) are part of the Maricopa Freeway . The portion of the highway south of Cordes Lakes was built along the alignment of State Route 69 (SR 69), while the northern part was built along old SR 79 's alignment. The final section of I-17 was completed in 1978. I-17 gains more than one mile (1.6 km) in elevation between Phoenix at 1,117 feet (340 m) and Flagstaff at 7,000 feet (2,100 m). The highway features several scenic view exits along its route that overlook
14300-433: The spine of Utah. Just north of Dixie and east of Cedar City is the state's highest ski resort, Brian Head . Like most of the western and southwestern states, the federal government owns much of the land in Utah. Over 70 percent of the land is either BLM land , Utah State Trustland, or U.S. National Forest , U.S. National Park , U.S. National Monument , National Recreation Area or U.S. Wilderness Area . Utah
14430-484: The state constitution. This was a condition required of other western states that were admitted into the Union later. Statehood was officially granted on January 4, 1896. Beginning in the early 20th century, with the establishment of such national parks as Bryce Canyon National Park and Zion National Park , Utah became known for its natural beauty. Southern Utah became a popular filming spot for arid, rugged scenes featured in
14560-560: The state lies in the rain shadow of the Wasatch Mountains . The primary source of precipitation for the state is the Pacific Ocean, with the state usually lying in the path of large Pacific storms from October to May. In summer, the state, especially southern and eastern Utah, lies in the path of monsoon moisture from the Gulf of California . Most of the lowland areas receive less than 12 inches (305 mm) of precipitation annually, although
14690-457: The state's mountains, Utah's skiing has become world-renowned. The dry, powdery snow of the Wasatch Range is considered some of the best skiing in the world (the state license plate once claimed "the Greatest Snow on Earth"). Salt Lake City won the bid for the 2002 Winter Olympic Games , and this served as a great boost to the economy. The ski resorts have increased in popularity, and many of
14820-765: The territorial legislature passed the Act in Relation to Service and the Act for the relief of Indian Slaves and Prisoners formally legalizing slavery in the territory. Slavery was abolished in the territory during the Civil War. In 1850, Salt Lake City sent out a force known as the Nauvoo Legion and engaged the Timpanogos in the Battle at Fort Utah . Disputes between the Mormon inhabitants and
14950-487: The territory that he and the Mormon pioneers were settling, calling it Deseret—which according to the Book of Mormon was an ancient word for "honeybee". This is symbolized by the beehive on the Utah flag, and the state's motto, "Industry". The Utah Territory was much smaller than the proposed state of Deseret, but it still contained all of the present states of Nevada and Utah as well as pieces of modern Wyoming and Colorado . It
15080-509: The territory's history. Chief Antonga Black Hawk died in 1870, but fights continued to break out until additional federal troops were sent in to suppress the Ghost Dance of 1872. The war is unique among Indian Wars because it was a three-way conflict, with mounted Timpanogos Utes led by Antonga Black Hawk fighting federal and LDS authorities. On May 10, 1869, the First transcontinental railroad
15210-477: The territory. A steady stream of governors appointed by the president quit the position, often citing the traditions of their supposed territorial government. By agreement with Young, Johnston established Camp Floyd , 40 miles (60 km) away from Salt Lake City to the southwest. Salt Lake City was the last link of the First Transcontinental Telegraph , completed in October 1861. Brigham Young
15340-520: The tribe is part of the coalition that manages Bears Ears National Monument . Southeastern Utah is also punctuated by the remote, but lofty La Sal , Abajo , and Henry mountain ranges. Eastern (northern quarter) Utah is a high-elevation area covered mostly by plateaus and basins, particularly the Tavaputs Plateau and San Rafael Swell , which remain mostly inaccessible, and the Uinta Basin , where
15470-490: The war, complied by submitting a detailed network of 20,000 miles (32,000 km) of interconnected primary highways—the so-called Pershing Map . A boom in road construction followed throughout the decade of the 1920s, with such projects as the New York parkway system constructed as part of a new national highway system. As automobile traffic increased, planners saw a need for such an interconnected national system to supplement
15600-468: The winter of 1847. The first group of settlers brought three African slaves with them, making Utah the only place in the western United States to have African slavery. The three slaves, Green Flake, Hark Lay, and Oscar Crosby, came west with the first group of settlers in 1847. Utah was a Mexican territory when the first pioneers arrived in 1847. Early in the Mexican–American War in late 1846,
15730-869: Was also complete. The largest section yet to be completed was from SR 179 north to Flagstaff. This segment was still just a two-lane roadway, but it did have full traffic interchanges built at crossroads. The portion from I-40 south to the Flagstaff Municipal Airport had been completed by this time. The final section of I-17, near Camp Verde and Montezuma Castle, began construction in February 1977 and opened to traffic in August 1978. In 1993, officials in Arizona proposed an extension of I-17 to connect with I-15 in Utah . The existing interchange with Happy Valley Road in Phoenix
15860-513: Was among the first to send a message, along with Abraham Lincoln and other officials. Because of the American Civil War , federal troops were pulled out of Utah Territory in 1861. This was a boon to the local economy as the army sold everything in camp for pennies on the dollar before marching back east to join the war. The territory was then left in LDS hands until Patrick E. Connor arrived with
15990-592: Was completed at Promontory Summit , north of the Great Salt Lake. The railroad brought increasing numbers of people into the territory and several influential businesspeople made fortunes there. During the 1870s and 1880s laws were passed to punish polygamists due, in part, to stories from Utah. Notably, Ann Eliza Young —tenth wife to divorce Brigham Young, women's advocate, national lecturer, and author of Wife No. 19 or My Life of Bondage —and Fanny Stenhouse, author of Tell It All: My Life in Mormonism , testified to
16120-464: Was converted to a diverging diamond interchange (DDI). The project was finished in the fall of 2020. I-17 has the unusual distinction of starting at approximately milepost 194 instead of at milepost 0. This is a holdover from Arizona's old system of marking mileposts, where a branching route would continue the milepost numbering of its original host, instead of starting over at zero. I-17 inherited its milepost locations from SR 69 , which
16250-482: Was created with the Compromise of 1850 , and Fillmore , named after President Millard Fillmore , was designated the capital. The territory was given the name Utah after the Ute tribe of Native Americans. Salt Lake City replaced Fillmore as the territorial capital in 1856. By 1850, there were around 100 black people in the territory, the majority of whom were slaves. In Salt Lake County, 26 slaves were counted. In 1852,
16380-541: Was employed ahead of Hurricane Charley in the Tampa, Florida area and on the Gulf Coast before the landfall of Hurricane Ivan ; however, evacuation times there were no better than previous evacuation operations. Engineers began to apply lessons learned from the analysis of prior contraflow operations, including limiting exits, removing troopers (to keep traffic flowing instead of having drivers stop for directions), and improving
16510-532: Was established as a state route from Phoenix north to Prescott . The road was completed by 1940 to Prescott. In 1954, a new route north to Flagstaff was established as SR 79. In May 1956, the Black Canyon Highway from Phoenix to Flagstaff was completed, but not to Interstate standards. It was incorporated into the new Interstate Highway System , established by the federal government later that year, and designated as part of I-17. The first interchange on
16640-786: Was in Black Canyon City . Interstate Highway [REDACTED] The Dwight D. Eisenhower National System of Interstate and Defense Highways , commonly known as the Interstate Highway System , or the Eisenhower Interstate System , is a network of controlled-access highways that forms part of the National Highway System in the United States . The system extends throughout the contiguous United States and has routes in Hawaii , Alaska , and Puerto Rico . In
16770-422: Was proclaimed complete in 1992, but two of the original Interstates— I-95 and I-70 —were not continuous: both of these discontinuities were due to local opposition, which blocked efforts to build the necessary connections to fully complete the system. I-95 was made a continuous freeway in 2018, and thus I-70 remains the only original Interstate with a discontinuity. I-95 was discontinuous in New Jersey because of
16900-494: Was serving as Supreme Commander of Allied Forces in Europe during World War II . In 1954, Eisenhower appointed General Lucius D. Clay to head a committee charged with proposing an interstate highway system plan. Summing up motivations for the construction of such a system, Clay stated, It was evident we needed better highways. We needed them for safety, to accommodate more automobiles. We needed them for defense purposes, if that should ever be necessary. And we needed them for
#873126