Misplaced Pages

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70-447: The original interchange plan was more elaborate. Five freeway segments (three signed routes) would connect through a series of three interchanges, forming a triangle. Those routes were SR 99 (Golden State Freeway), SR 58 (Mojave Freeway/Westside Parkway), and SR 178 (Crosstown Freeway). However, only four segments and part of one interchange were constructed. Today, SR 178 terminates about 1.5 miles (2.4 km) east of

140-474: A 4-lane highway and continues to the mouth of Kern Canyon (which is also the northeastern city limits of Bakersfield). For the next approximately 8 miles, the route is a narrow 2-lane road (average width of 18 ft. to 24 ft.), as it ascends the lower Sierra Nevada . Average speed is 35 mph, with sharp turns and steep dropoffs. After approximately 8 miles, the road becomes a much gentler 4-lane, 60 ft. expressway. The route continues east and reaches

210-468: A cosign with SR 58 along 23rd/24th St. After SR 58 was moved to the freeway south of Brundage Lane in 1976, SR 178 was extended west to SR 99. Construction on the initial freeway in Bakersfield was completed in 1968. It ran from M St, on the eastern edge of Downtown, through East Bakersfield to Haley Street. Eastern extensions have been constructed since 1968, one interchange at a time as the need arises. In

280-470: A diversity of flora and fauna. The 54,000 sq mi (140,000 km ) desert supports a number of human activities, including recreation, ranching, and military training. The Mojave Desert also contains various silver , tungsten , iron and gold deposits. The spelling Mojave originates from the Spanish language, while the spelling Mohave comes from modern English. Both are used today, although

350-461: A freeway as it leaves Downtown and winds through East Bakersfield. The freeway then travels east as it enters Northeast Bakersfield. A mile east of the Morning Drive interchange, the freeway segment ends with the first at-grade intersection at Canteria Drive. The highway continues through the rural, but growing Rio Bravo section of Bakersfield, crossing SR 184 . Turning northeast, the road narrows to

420-580: A fuel bed. This has significantly altered many areas of the desert. At higher elevations, fire regimes are regular but infrequent. While the Mojave Desert is generally sparsely populated, it has increasingly become urbanized in recent years. The metropolitan areas include Las Vegas , the largest urban area in the Mojave and the largest urban area in Nevada with a population of about 2.3 million. St. George, Utah ,

490-481: A full list of prefixes, see California postmile § Official postmile definitions ). Segments that remain unconstructed or have been relinquished to local control may be omitted. The numbers reset at county lines; the start and end postmiles in each county are given in the county column. Mojave Desert The Mojave Desert ( / m oʊ ˈ h ɑː v i , m ə -/ ; Mohave : Hayikwiir Mat'aar ; Spanish : Desierto de Mojave )

560-505: A larger North American Desert . Of these, the Mojave is the smallest and driest. It displays typical basin and range topography , generally having a pattern of a series of parallel mountain ranges and valleys. It is also the site of Death Valley , which is the lowest elevation in North America. The Mojave Desert is often colloquially called the "high desert", as most of it lies between 2,000 and 4,000 feet (610 and 1,220 m). It supports

630-470: A more southern alignment near Truxtun Avenue executed by the Kern Council of Governors (KernCOG) in 1986 and the 2001 Bakersfield System Study. A Westchester alignment would have extended the freeway west from its current terminus at M Street and through Downtown Bakersfield in the vicinity of 23rd street. As it continued through Westchester the freeway would turn southwest, cross under SR 99 and terminate at

700-406: A natural border to the Mojave Desert. There are also abundant alluvial fans , which are called bajadas , that form around the mountains within the Mojave Desert and extend down toward the low altitude basins, which contain dried lake beds called playas, where water generally collects and evaporates, leaving large volumes of salt. These playas include Rogers Dry Lake and China Lake . Dry lakes are

770-678: A noted feature of the Mojave landscape. The Mojave Desert is also home to the Devils Playground , about 40 miles (64 km) of dunes and salt flats going in a northwest-southeasterly direction. The Devil's Playground is a part of the Mojave National Preserve and is between the town of Baker, California and the Providence Mountains . The Cronese Mountains are within the Devil's Playground. There are very few surface rivers in

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840-415: A route 202 miles long between Santa Maria and Freeman Junction through Bakersfield. Freeman does not exist today; it was originally located near (and later at) the junction of SR 178 and SR 14. The route was defined as Legislative Route 57. The 1919 bond act also created the first segment of LRN 58. The route was extended several times since 1919. In 1933, the final segment was added to LRN 58, which created

910-578: A route from US 101 near Santa Margarita to the Nevada state line via Bakersfield. Construction on the route between Bakersfield and Isabella through Kern Canyon started in 1922. Progress moved slowly, as sheer rock walls had to be blasted with dynamite. In 1931, 9 years after construction started, the 26-mile highway segment was completed. In 1933, with the creation of signed routes, portions of LRN 57 and LRN 58 would be signed as Route 178. LRN 58 would be signed between Route 33 and US 99, and LRN 57 would be signed between US 99 and US 6. Later, in 1947, LRN 212

980-535: Is a desert in the rain shadow of the southern Sierra Nevada mountains and Transverse Ranges in the Southwestern United States . Named for the indigenous Mohave people , it is located primarily in southeastern California and southwestern Nevada , with small portions extending into Arizona and Utah . The Mojave Desert, together with the Sonoran , Chihuahuan , and Great Basin deserts, form

1050-570: Is a former ranch along the Mojave River. Several attractions and natural features are in the Calico Mountains . Calico Ghost Town , in Yermo, is administered by San Bernardino County. The ghost town has several shops and attractions and inspired Walter Knott to build Knott's Berry Farm . The Bureau of Land Management also administers Rainbow Basin and Owl Canyon. The Calico Early Man Site , in

1120-473: Is generally abundant in winter annuals. The plants of the Mojave Desert each generally correspond to an individual geographic feature. As such, there are distinctive flora communities within the desert. Notable species of the Mojave Desert include bighorn sheep ( Ovis canadensis ), mountain lions ( Puma concolor ), black-tailed jackrabbits ( Lepus californicus ), and desert tortoises ( Gopherus agassizii ). Various other species are particularly common in

1190-557: Is not endemic, but almost completely limited to the Mojave Desert. There are also aquatic species that are found nowhere else, such as the Devils Hole pupfish , limited to one hot spring near Death Valley. Before the European colonization of North America, tribes of Native Americans, such as the Mohave , were hunter-gatherers living in the Mojave Desert. European explorers started exploring

1260-474: Is set to begin August 2030. Except where prefixed with a letter, postmiles were measured on the road as it was in 1964 , based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers to an overlap due to a correction or change, and T indicates postmiles classified as temporary ( for

1330-637: Is the northeasternmost metropolitan area in the Mojave, with a population of around 180,000 in 2020, and is located at the convergence of the Mojave, Great Basin, and Colorado Plateau. The Los Angeles exurban area of Lancaster - Palmdale has more than 400,000 residents, and the Victorville area to its east has more than 300,000 residents. Smaller cities or micropolitan areas in the Mojave Desert include Helendale , Lake Havasu City , Kingman , Laughlin , Bullhead City and Pahrump . All have experienced rapid population growth since 1990. The California portion of

1400-406: Is the principal saline basin of the Mojave Desert. Natural springs are typically rare throughout the Mojave Desert, but there are two notable springs, Ash Meadows and Oasis Valley . Ash Meadows is formed from several other springs, which all draw from deep underground. Oasis Valley draws from the nearby Amargosa River. Extremes in temperatures throughout the seasons characterize the climate of

1470-574: Is unconstructed from 15 miles east of Ridgecrest to 15 miles west of SR 127 (10 miles from the eastern boundary of the Death Valley National Park at what had been its former boundary prior to 1994). The state is considering three options: select an alignment to connect with the current eastern segment at its present location; select an alignment to avoid traversing the Death Valley Wilderness; or delete this unconstructed segment from

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1540-678: The Federal Highway Administration . It is eligible for the State Scenic Highway System , but it is not officially designated as a scenic highway by the California Department of Transportation . The first segment starts at State Route 99 just west of Downtown Bakersfield. The road continues as 24th Street but then splits at B Street, utilizing 24th Street for westbound traffic and 23rd Street for eastbound traffic through Downtown Bakersfield . SR 178 becomes

1610-694: The Indian Wells Valley into the city of Ridgecrest . The constructed highway then ends east of Ridgecrest at the turnoff for the Trona Pinnacles National Natural Landmark in Searles Valley . The right-of-way then continues north as the county-maintained routes of Trona Road, Trona-Wildrose Road, and then Panamint Valley Road, running through the community of Trona to SR 190 east of Panamint Springs . The second segment resumes four miles (6 km) west of Salisberry Pass in

1680-635: The Mojave Tribal Nation officially uses the spelling Mojave . Mojave is a shortened form of Hamakhaave , an endonym in their native language, which means "beside the water". The Mojave Desert is a desert bordered to the west by the Sierra Nevada mountain range and the California montane chaparral and woodlands , and to the south and east by the Sonoran Desert. The boundaries to the east of

1750-539: The Mojave National Preserve . However, the southwest and central east portions of the Mojave Desert are particularly threatened as a result of off-road vehicles, increasing recreational use, human development, and agricultural grazing . The World Wildlife Fund lists the Mojave Desert as relatively "stable/intact". Various habitats and regions of the Mojave Desert have been protected by statute. Notably, Joshua Tree National Park, Death Valley National Park, and

1820-545: The Oligocene . Large downpours during the Miocene likely significantly eroded the rock in the Mojave and accelerated deposition . The Mojave Desert is a source of various minerals and metallic materials. Due to the climate, there is an accumulation of weathered bedrock, fine sand and silt, both sand and silt sediments becoming converted into colluvium . The deposits of gold, tungsten, and silver have been mined frequently prior to

1890-562: The Paleozoic era, the area that is now the Mojave was again likely submerged under a greater sea. During the Mesozoic era, major tectonic activities such as thrust faulting and folding resulted in distinctive shaping as well as intrusion . During the Cenozoic , more tectonic deformation occurred whilst the Mojave was partly submerged. Major volcanic activity is thought to have occurred during

1960-469: The San Gabriel Mission . In recent years, human development in the Mojave Desert has become increasingly present. Human development at the major urban and suburban centers of Las Vegas and Los Angeles has had an increasingly damaging effect on the wildlife of the Mojave Desert. An added demand for landfill space as a result of the large metropolitan centers of Las Vegas and Los Angeles also has

2030-521: The Second World War . Additionally, there have been deposits of copper , tin , lead-zinc , manganese , iron , and various radioactive substances but they have not been mined for commercial use. The flora of the Mojave Desert consists of various endemic plant species, notably the Joshua Tree , which is a notable endemic and indicator species of the desert. There is more endemic flora in

2100-571: The U.S. state of California that exists in two constructed segments. The gap in between segments is connected by various local roads and State Route 190 through Death Valley National Park . The western segment runs from State Route 99 in Bakersfield and over the Walker Pass in the Sierra Nevada to the turnoff for the Trona Pinnacles National Natural Landmark . The eastern segment runs from

2170-597: The Bakersfield area, including construction of the southern leg of the interchange, connecting the Mojave Freeway to the Westside Parkway. This would also complete construction of the existing interchange, and provide improvements which will be incorporated into the future construction of the other two interchanges. The city would also drop its opposition to the project, with the city council voting to give Caltrans full control over it. The city would retain control over

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2240-731: The Calico Hills east of Yermo , is believed by some archaeologists, including the late Louis Leakey , to show the earliest evidence with lithic stone tools found here of human activity in North America. The Mojave Desert has a relatively stable and intact conservation status. The Mojave Desert is one of the best protected distinct ecoregions in the United States, as a result of the California Desert Protection Act , which designated 69 wilderness areas and established Death Valley National Park , Joshua Tree National Park , and

2310-477: The California routes were renumbered. LRN 58 was dropped from Route 178 and combined with the eastern portion of the decommissioned US 466 (also defined as part of LRN 58) to create SR 58. The remaining Route 178 was combined with LRN 212 to create SR 178. It was originally defined to start at SR 99 in Bakersfield, but later that year it was changed to simply start in Bakersfield. This change was probably done to avoid

2380-623: The California-Nevada state line, as well as all of Nevada State Route 372, are both known as the Charles Brown Highway. Charles Brown, a former California State Legislator, was a major proponent for the incorporation of the segment of State Route 178 between State Route 14 and the California-Nevada state line into the California Highway System. SR 178 was one of the routes created with the third bond act of 1919. It defined

2450-720: The Joshua tree (Yucca brevifolia). Additionally, the Mojave Desert is also home to various species of cacti, such as silver cholla ( Cylindropuntia echinocarpa ), Mojave prickly pear ( O. erinacea ), beavertail cactus ( O. basilaris ), and many-headed barrel cactus ( Echinocactus polycephalus ). Less common but distinctive plants of the Mojave Desert include ironwood ( Olneya tesota ), blue Palo Verde ( Parkinsonia Florida ), chuparosa ( Justicia californica ), spiny menodora ( Menodora spinescens ), desert senna ( Cassia armata ), California dalea ( Psorothamnus arborescens ), and goldenhead ( Acamptopappus shockleyi ). The Mojave Desert

2520-731: The Kern Canyon section, which is between Bakersfield and the Kern River Valley , a bypass route was identified in 1964. By 1968, a deed from the US Forest Service issued an easement to the State for the construction of the highway through National Forest lands. The first phase of construction was completed in 1974, which created a short freeway near Lake Isabella and a 60’ wide expressway extending west to China Garden. Subsequent phases were not funded. The freeway portion of Route 178, completed in

2590-803: The Mojave Desert are less distinctive than the other boundaries because there is no presence of an indicator species, such as the Joshua tree ( Yucca brevifolia ), which is endemic to the Mojave Desert. The Mojave Desert is distinguished from the Sonoran Desert and other deserts adjacent to it by its warm temperate climate, as well as flora and fauna such as ironwood ( Olneya tesota ), blue Palo Verde ( Parkinsonia florida ), chuparosa ( Justicia californica ), spiny menodora ( Menodora spinescens ), desert senna ( Cassia armata ), California dalea ( Psorothamnus arborescens ), California fan palm (Washingtonia filifera) and goldenhead ( Acamptopappus shockleyi ). Along with these other factors, these plants differentiate

2660-566: The Mojave Desert in the San Gabriel mountains may receive more rain. Most of the precipitation in the Mojave comes from the Pacific Cyclonic storms that are generally present passing eastward in November to April. Such storms generally bring rain and snow only in the mountainous regions, as a result of the effect of the mountains, which creates a drying effect on its leeward slopes . During

2730-614: The Mojave Desert than almost anywhere in the world. Mojave Desert flora is not a vegetation type , although the plants in the area have evolved in isolation because of the physical barriers of the Sierra Nevadas and the Colorado Plateau. Predominant plants of the Mojave Desert include all-scale ( Atriplex polycarpa ), creosote bush ( Larrea tridentata ), brittlebush ( Encelia farinosa ), desert holly ( Atriplex hymenelytra ), white burrobush (Hymenoclea salsola), and most notably,

2800-686: The Mojave Desert was further protected from development by the Desert Renewable Energy Conservation Plan (DRECP), in which the Bureau of Land Management designated 4.2 million acres of public land as protected wilderness as part of the National Conservation Lands of the California Desert. The Mojave Desert has served as a backdrop for a number of films . The 2010 video game Fallout: New Vegas takes place in

2870-575: The Mojave Desert, but two major rivers generally flow underground. One is the intermittent Mojave River , which begins in the San Bernardino mountains and disappears underground in the Mojave Desert. The other is the Amargosa River , which flows partly underground through the Mojave Desert along a southward path. The Manix, Mojave, and the Little Mojave lakes are all large but shallow. Soda Lake

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2940-490: The Mojave Desert, such as the LeConte's thrasher ( Toxostoma lecontei ), banded gecko ( Coleonyx variegatus ), desert iguana (Dipsosaurus dorsalis), chuckwalla ( Sauromalus obesus ), and regal horned lizard ( Phrynosoma solare ). Species of snake include the rosy boa ( Lichanura trivirgata ), Western patch-nosed snake ( Salvadora hexalepis ), and Mojave rattlesnake ( Crotalus scutulatus ). These species can also occur in

3010-399: The Mojave Desert. Freezing temperatures as well as strong winds are not uncommon in the winter, as well as precipitation such as rain and snow in the mountains. In contrast, temperatures above 100 °F (38 °C) are not uncommon during the summer months. There is an annual average precipitation of 2 to 6 inches (51 to 152 mm), although regions at high altitudes such as the portion of

3080-780: The Mojave National Preserve by the California Desert Protection Act of 1994. ( Pub.L. 103–433). Various other federal and state land agencies have protected regions within the Mojave Desert. These include Antelope Valley California Poppy Reserve , which protects the fields of California poppies, Mojave Trails National Monument , Desert Tortoise Natural Area , Arthur B. Ripley Desert Woodland State Park , Desert National Wildlife Refuge , Lake Mead National Recreation Area , Providence Mountains State Recreation Area , Red Cliffs National Conservation Area , Red Rock Canyon State Park , Saddleback Butte State Park , Snow Canyon State Park and Valley of Fire State Park . In 2013,

3150-727: The Mojave a critical training location for the United States Department of Defense. The Mojave Desert has long been a valuable resource for people, and as its human population grows, its importance will only grow. Miners, ranchers, and farmers rely on the desert for a living. The Mojave is also used by the state of California to meet renewable energy objectives. Large tracts of the desert are owned by federal agencies and are leased at low cost by wind and solar energy companies, although these renewable developments can cause their own environmental impact and disturb cultural landscapes and visual resources. Desert Sunlight Solar Farm , one of

3220-581: The Mojave from the nearby Sonoran Desert. The Mojave Desert is bordered by the San Andreas Fault to the southwest and the Garlock fault to the north. The mountains elevated along the length of the San Andreas fault provide a clear border between the Mojave Desert and the coastal regions to the west. The Garlock fault separates the Mojave Desert from the Sierra Nevada and Tehachapi mountains, which provide

3290-780: The State Highway System. The County of Inyo has offered three alternatives: On March 26, 2024, Caltrans District 9 proposed the Ridgecrest-Inyokern Pavement Project, rehabilitating 24 lane miles of SR 178 from PM 88.6 in Kern County to PM 104.6 at the San Bernardino County line. The purpose of the project is to preserve existing pavement and improve ride quality. Other improvements on the highway will include updated signal lights, traffic signs, and Class II bike lanes, among other improvements. Construction

3360-473: The city of Bakersfield never formally endorsed a route. Caltrans formally announced preference for an alignment through downtown and Westchester in 1973, but fierce public opposition coupled with the historic integrity of the neighborhoods slated to be demolished greatly hindered momentum of the project. In 1977, then-Governor Jerry Brown issued a moratorium on all new freeway construction. Formal studies on possible routes continued and resulted in recommendations of

3430-416: The completed connector. The Centennial Corridor was inaugurated on February 9, 2024, with a ceremonial bicycle ride, and officially opened to traffic on February 17, 2024, with some connections between SR 58 and SR 99 remaining closed. The project was originally scheduled to open in late 2023 but faced significant delays. California State Route 178 State Route 178 ( SR 178 ) is a state highway in

3500-524: The construction of the Westside Parkway. In 2005, $ 330 million was secured through the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU) for the construction of the Centennial Corridor. The southern leg of the interchange is a part of Phase 3 of that project. However, the project was controversial since it displaced dozens of homes and businesses. The project

3570-410: The desert also contains Edwards Air Force Base and Naval Air Weapons Station China Lake , noted for experimental aviation and weapons projects. The Mojave Desert has several ghost towns . The most significant are the silver and copper-mining town of Calico, California , and the old railroad depot of Kelso, California . Some of the other ghost towns are more modern, created when U.S. Route 66 (and

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3640-408: The deserts beginning in the 18th century. Francisco Garcés , a Franciscan friar, was the first explorer of the Mojave Desert in 1776. Garcés recorded information about the original inhabitants of the deserts. Later, as American interests expanded into California, American explorers started probing the California deserts. Jedediah Smith travelled through the Mojave Desert in 1826, finally reaching

3710-551: The interchange. Since the interchange was designed relatively late compared to other major California freeway interchanges, several design elements were incorporated to help alleviate traffic. Unlike the East Los Angeles and Orange Crush interchanges, the three Kern County interchanges are widely spaced (between 1 and 2 miles (1.6 and 3.2 km)) from one another. Also, local interchanges within one mile (1.6 km) of it transition onto their own parallel roads, and merge with

3780-767: The international destination of Las Vegas. The Mojave is also known for its scenery, playing host to Death Valley National Park , Joshua Tree National Park , and the Mojave National Preserve . Lakes Mead , Mohave , and Havasu provide water sports recreation, and vast off-road areas entice off-road enthusiasts. The Mojave Desert also includes three California State Parks , the Antelope Valley California Poppy Reserve , in Lancaster , Saddleback Butte State Park , in Hi Vista and Red Rock Canyon State Park . Mojave Narrows Park , operated by San Bernardino County,

3850-470: The largest solar farms in the world, was built approximately five miles from Joshua Tree National Park . An endangered Yuma clapper rail was found dead at the site in 2014, spurring efforts from conservation groups to protect birds from the so-called lake effect, a phenomenon in which birds can mistake the reflective glare of solar panels for a body of water. The Mojave Desert is one of the most popular spots for tourism in North America, primarily because of

3920-419: The late 1950s, ends as it approaches downtown Bakersfield from the east. Weak public support and subsequent lack of funds hindered efforts to complete the freeway through downtown and Westchester to its proposed terminus at the beginning of the modern-day Westside Parkway. Although freeway alternatives through various neighborhoods have been studied several times following the existing portion's completion in 1968,

3990-442: The late summer months, there is also the possibility of strong thunderstorms, which bring heavy showers or cloudbursts. These storms can result in flash flooding . The Mojave Desert has not historically supported a fire regime because of low fuel loads and connectivity. However, in the last few decades, invasive annual plants such as some within the genera Bromus , Schismus and Brassica have facilitated fires by serving as

4060-503: The lesser-known U.S. Route 91 ) were abandoned in favor of the construction of Interstates . CA SR 14 , Interstate 15 , Interstate 40 , CA SR 58 , CA SR 138 , US Route 95 , and US Route 395 are the main highways that traverse the Mojave Desert. The rock that forms the Mojave Desert was likely created under shallow water in the Precambrian . Sedimentary processes left large deposits of limestones, silicates, and dolomites. During

4130-463: The mainline after the main interchange. The western extension as well as the northern leg of the interchange were not constructed. It was delayed first by a four-year freeway construction moratorium imposed by Governor Jerry Brown (1977–81) and was followed by 25 years of opposition from the City of Bakersfield (1980–2005). In 2005, federal money was secured for the construction of several projects in

4200-531: The neighboring Sonoran and Great Basin deserts. The animal species of the Mojave Desert have generally fewer endemics than its flora. However, endemic fauna of the Mojave Desert include Kelso Dunes jerusalem cricket ( Ammopelmatus kelsoensis), the Kelso Dunes shieldback katydid ( Eremopedes kelsoensis ), the Mohave ground squirrel ( Spermophilus Mohavensis ) and Amargosa vole ( Microtus californicus scirpensis ). The Mojave fringe-toed lizard ( Uma Scopari a)

4270-477: The newly completed Westside Parkway. A southern alignment would start at SR 178 at Baker Street, about 0.7 miles east of its current terminus. From there, it would turn southwest and run parallel to Baker Street, through East Bakersfield, to the BNSF railroad yard. It would then turn west and run south of the railroad tracks through the southern end of Downtown Bakersfield. At Bakersfield High School, it would run north of

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4340-516: The real potential to drastically affect flora and fauna of the Mojave Desert. Agricultural development along the Colorado river , close to the Eastern boundary of the Mojave Desert, also causes habitat loss and degradation. Areas that are particularly affected by human development include Ward Valley and Riverside county. The United States military also maintains installations in the Mojave Desert, making

4410-528: The roadway. The project also encompassed improvements to the 24th Street/State Route 99 interchange and widened the Oak Street/24th Street intersection. This solution required the acquisition of several properties north of 24th Street, which was completed in early 2015, as well as the closure of access of B Street through Elm Street from the north. The project was completed in December 2020. This segment

4480-635: The southeasterly part of Death Valley National Park in Inyo County at what had been the former boundary of Death Valley National Monument until 1994. It then meets up with State Route 127 . SR 178 then branches northward from SR 127 to the California-Nevada State Line. In Nevada, the roadway continues as State Route 372 ending at State Route 160 near the center of Pahrump in Nye County . The segment of State Route 178 from State Route 127 to

4550-470: The southeasterly part of Death Valley to Nevada State Route 372 at the Nevada state line. SR 178 serves many different purposes. It connects Downtown Bakersfield with East Bakersfield and Lake Isabella . It is one of three crossings over the Sierra Nevada south of Yosemite ( SR 120 , Tioga Pass Road), connecting the southern San Joaquin Valley with the upper Mojave Desert and the Owens Valley . This also provides access to Death Valley National Park. If

4620-487: The town of Lake Isabella , which is just south of the Lake Isabella Reservoir . The road briefly expands to a divided freeway through Lake Isabella, before narrowing to a 2-lane conventional highway at the intersection with Lake Isabella Boulevard. The road continues to wind until it ascends to Walker Pass , an elevation of 5,250 feet (1,600 m). The highway then descends from the mountains to its junction with State Route 14 at Freeman . It then proceeds eastward across

4690-675: The tracks (avoiding the high school). It would continue under SR 99 and terminate at Westside Parkway. Still needing to address the increasing crosstown congestion and with a freeway through downtown effectively out of the question, the City of Bakersfield approved construction in the late 2000s to increase capacity on 24th Street through Westchester and 23rd and 24th streets through Downtown using TRIP funds. The project widened, realigned and re-striped 24th Street from west of State Route 99 to east of M Street, as well as realigned and re-striped 23rd Street from west of C Street to east of M Street, in order to add two travel lanes (one in each direction) to

4760-400: The unconstructed portion were built, it would also provide an easy route between Ridgecrest, California and Las Vegas , via Pahrump , Nevada. SR 178 is part of the California Freeway and Expressway System , and through Bakersfield and Ridgecrest is part of the National Highway System , a network of highways that are considered essential to the country's economy, defense, and mobility by

4830-448: Was created, and defined to run from LRN 23 (signed as US 6) near Inyokern, east to the Nevada state line. It was an unsigned route. From 1950 to 1953, a portion of SR 178 in Lake Isabella was rerouted around the Isabella Auxiliary Dam. The dam was built over the old route and parts of it are inundated by Isabella Lake. The new route goes over the dam's southern abutment and along the shoreline of Isabella Lake toward Onyx. In 1964, all of

4900-416: Was partially completed in October 2022, but did not include ramps for southbound SR 99 traffic to directly transition to westbound SR 58, or eastbound SR 58 traffic to transition to northbound SR 99. The connection to SR 99 and the whole interchange was originally scheduled to be completed in fall 2023, with the rest of SR 58 running on Rosedale Highway between Mohawk Street and SR 99 being transferred onto

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