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101-550: The Washington State Department of Transportation ( WSDOT or WashDOT , both / ˈ w ɒ ʃ d ɒ t / ) is a governmental agency that constructs, maintains, and regulates the use of transportation infrastructure in the U.S. state of Washington . Established in 1905, it is led by a secretary and overseen by the governor . WSDOT is responsible for more than 20,000 lane-miles of roadway, nearly 3,000 vehicular bridges and 524 other structures. This infrastructure includes rail lines, state highways , state ferries (considered part of

202-616: A temperate rainforest . Weeks may pass without a clear day. The western slopes of the Cascade Range receive some of the heaviest annual snowfall (in some places more than 200 inches or 5,100 millimeters water equivalent) in the country. In the rain shadow area east of the Cascades, the annual precipitation is only 6 inches (150 mm). Precipitation then increases again eastward toward the Rocky Mountains (about 120 miles (190 km) east of

303-600: A Secretary of Transportation who is confirmed by the state legislature . The last Secretary of Transportation was Lynn Peterson, who served until February 5, 2016, when her appointment under Governor Jay Inslee was rejected by the Washington State Senate during the confirmation process. Deputy Secretary of Transportation Roger Millar was appointed as Acting Secretary of Transportation by Governor Inslee on February 10, 2016. WSDOT has approximately 1,500 positions for winter operations, which includes snow plow crews for

404-785: A dependency on salmon from the Columbia and its tributaries. The area has been known to host megathrust earthquakes in the past, the last being the Cascadia earthquake of 1700 . The first recorded European landing on the Washington coast was by Spanish Captain Don Bruno de Heceta in 1775, on board the Santiago , part of a two-ship flotilla with the Sonora . He claimed the coastal lands up to Prince William Sound for Spain as part of their claimed rights under

505-617: A focus for war industries. While the Boeing Company produced many heavy bombers , ports in Seattle, Bremerton , Vancouver , and Tacoma were available for the manufacture of warships. Seattle was the point of departure for many soldiers in the Pacific, several of whom were quartered at Fort Lawton, which later became Discovery Park . In Eastern Washington, the Hanford Works atomic energy plant

606-539: A large hole in an offramp to SR 99 in Seattle and broken concrete panels on I-5 in Everett and I-90 near Issaquah. WSDOT has also been tasked with replacement of 437 fish barriers , mainly outdated culvert designs, in Western Washington to comply with a federal court order to restore salmon runs that are protected by Native American treaty rights. As of 2024, 146 of the barriers had been replaced or rehabilitated;

707-688: A large region experiences strong rain shadow effects. Semi-arid conditions occur in much of Eastern Washington with the strongest rain shadow effects at the relatively low elevations of the central Columbia Plateau —especially the region just east of the Columbia River from about the Snake River to the Okanagan Highland . Thus, instead of rain forests, much of Eastern Washington is covered with dry grassland , shrub-steppe , and dunes . The average annual temperature ranges from 51 °F (11 °C) on

808-469: A long period, Tacoma had large smelters where gold, silver, copper, and lead ores were treated. Seattle was the primary port for trade with Alaska and the rest of the country, and for a time, it possessed a large shipbuilding industry. The region around eastern Puget Sound developed heavy industry during the period including World War I and World War II , and the Boeing company became an established icon in

909-425: A low-pressure cyclone system takes over in the north Pacific Ocean. The air spiraling inward in a counter-clockwise fashion causes Washington's prevailing winds to come from the southwest, and bring cool and overcast weather and a predictably wet season . The term " Pineapple Express " is used colloquially to describe atmospheric river events, where repeated storm systems are directed by this persistent cyclone from

1010-407: A majority of trips were by residents of communities near the bridge. The most represented communities were, in numerical order, Port Ludlow (8%), Port Townsend (7%), Port Angeles (6%), Seattle (6%), Sequim (5%), Poulsbo (5%), Bremerton (4%), Port Hadlock (2%), and Silverdale (2%). The questionnaires revealed that a majority of trips were to and/or from communities near the bridge. On

1111-504: A period of heavy tremors and small eruptions, the north face of Mount St. Helens slid off in the largest landslide in recorded history before erupting violently , destroying a large part of the top of the volcano. The eruption flattened the forest up to 20 km north of the volcano , killed 57 people, flooded the Columbia River and its tributaries with ash and mud, and blanketed large parts of Washington eastward and other surrounding states in ash, making day look like night. Washington

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1212-402: A preliminary assessment of the risks and opportunities presented given the possibility of a rise in global temperatures and their effects on Washington state. Rainfall in Washington varies dramatically going from east to west. The Olympic Peninsula's western side receives as much as 160 inches (4,100 mm) of precipitation annually, making it the wettest area of the 48 conterminous states and

1313-694: A second bridge adjacent to the original bridge, the SR 167 HOT lanes project, which added HOT lanes over SR 167's existing HOV lanes from the SR 18 area to 180th Street, and the I-5 HOV extensions project, which extended the HOV lanes in Everett from the I-5/ SR 99 / SR 526 / SR 527 interchange to the I-5/ US 2 / SR 529 Spur interchange. Some of the main projects in the future include

1414-491: A site selection process. The Port Angeles graving dock was chosen for its accessibility to water and land as well as the work force. Before purchase, the National Historic Preservation Act required archaeologists to perform a review of the historical site. At that time, "there was no evidence of historic properties or cultural resources" (NEPA Re-evaluation Consultation, FHWA) and WSDOT was able to purchase

1515-526: A smaller renumbering of state highways occurred. The renumbering produced some new highways and either realigned or removed highways from the system. In 1996, Sound Transit was formed and in the same year, the Washington State Transportation Commission adopted its first 20-year transportation plan. Throughout the 1990s, WSDOT and ODOT partnered with Amtrak to create a train service that went from Canada to Oregon, which later became

1616-525: A total cost of $ 143 million (equivalent to $ 451 million today). The bridge reopened as a toll bridge , but a court ruled in August 1985 that the insurance settlement constituted repayment of the construction bonds, and since federal funds were used in reconstructing the bridge, the Washington State Department of Transportation (WSDOT) could not charge tolls after the bonds were retired. WSDOT

1717-439: A varied range of bird species. This range includes raptors, shorebirds, woodland birds, grassland birds, ducks, and others. There have also been a large number of species introduced to Washington, dating back to the early 18th century, including horses and burros. The channel catfish , lamprey , and sturgeon are among the 400 known freshwater fishes . Along with the Cascades frog, there are several forms of snakes that define

1818-482: Is an extremely important business throughout much of Eastern Washington, as the soil is highly productive and irrigation , aided by dams along the Columbia River, is fairly widespread. The spread of population in Eastern Washington is dominated by access to water, especially rivers. The main cities are all located alongside rivers or lakes; most of them are named after the river or lake they adjoin. Farther east,

1919-487: Is the most topographically prominent mountain in the contiguous U.S. Washington is a leading lumber producer, the largest producer of apples, hops, pears, blueberries, spearmint oil, and sweet cherries in the U.S., and ranks high in the production of apricots, asparagus, dry edible peas, grapes, lentils, peppermint oil, and potatoes. Livestock, livestock products, and commercial fishing—particularly of salmon, halibut, and bottomfish —are also significant contributors to

2020-464: Is the northwesternmost state of the contiguous United States . It borders Idaho to the east, bounded mostly by the meridian running north from the confluence of the Snake River and Clearwater River (about 117°02'23" west), except for the southernmost section where the border follows the Snake River. Oregon is to the south, with the Columbia River forming the western part and the 46th parallel forming

2121-505: The 13th-most populous state, with more than 7.8 million people. The majority of Washington's residents live in the Seattle metropolitan area , the center of transportation, business, and industry on Puget Sound , an inlet of the Pacific Ocean consisting of numerous islands, deep fjords and bays carved out by glaciers. The remainder of the state consists of deep temperate rainforests in

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2222-560: The 49th parallel as the international boundary west from Lake of the Woods to the Rocky Mountains . Resolution of the territorial and treaty issues west to the Pacific was deferred until a later time. In 1819, Spain ceded its rights north of the 42nd parallel to the United States. Negotiations with Great Britain over the next few decades failed to settle upon a compromise boundary and

2323-672: The 49th parallel , and then via marine boundaries through the Strait of Georgia , Haro Strait , and Strait of Juan de Fuca , with the Canadian province of British Columbia to the north. Washington is part of a region known as the Pacific Northwest , a term which always refers to at least Washington and Oregon, and may or may not include some or all the following, depending on the user's intent: Idaho, western Montana , northern California , British Columbia, and Alaska . The high mountains of

2424-568: The Alaskan Way Viaduct replacement tunnel , the replacement of the SR 520 Evergreen Point floating bridge , the ferry terminals , the I-5 Crash barrier project and SR 704 . Washington (state) Washington , officially the State of Washington , is a state in the Pacific Northwest region of the United States. It is often referred to as Washington state to distinguish it from

2525-585: The Amtrak Cascades . The 2001 Nisqually earthquake damaged most state highways around the Seattle metropolitan area and most of the budget was turned over to the Puget Sound region to help rebuild and repair roads and bridges. Since the beginning of the 21st century, WSDOT has been tasked with rebuilding and renovating aging portions of the highway system across the state. Several sections with poor conditions required emergency repairs in early 2023, including

2626-499: The Blue Mountains and the eastern sides of the Cascades. Mammals native to the state include the bat , black bear , bobcat , cougar , coyote , deer , elk , gray wolf , hare , moose , mountain beaver , muskrat , opossum , pocket gopher , rabbit , raccoon , river otter , skunk , and tree squirrel . Because of the wide range of geography, the state of Washington is home to several different ecoregions, which allow for

2727-435: The Blue Mountains . The state of Washington has a temperate climate. The eastern half of Washington has a semi-arid to warm-summer mediterranean climate , while the western side of Washington as well as the coastal areas of the state have a cool oceanic climate or warm-summer mediterranean climate. Major factors determining Washington's climate include the large semi-permanent low pressure and high pressure systems of

2828-462: The Cascade Range run north-south, bisecting the state. In addition to Western Washington and Eastern Washington , residents call the two parts of the state the "Westside" and the "Eastside", "Wet side" and "Dry side", or "Timberland" and "Wheatland", the latter pair more commonly in the names of region-specific businesses and institutions. These terms reflect the geography, climate, and industry of

2929-458: The February 13 windstorm . During the night, the bridge had withstood sustained winds of up to 85 mph (137 km/h) and gusts estimated at 120 mph (190 km/h), and finally succumbed at about 7:30 a.m. on February 13. The western drawspan and the pontoons of the western half had broken loose and sunk, despite the drawspan being opened to relieve lateral pressure. At the time of

3030-573: The Oregon Trail , the overland emigration route to the west, get established for thousands of emigrants in the following decades. Whitman provided medical care for the Native Americans, but when Indian patients—lacking immunity to new, "European" diseases—died in striking numbers, while at the same time many white patients recovered, they held "medicine man" Marcus Whitman personally responsible, and executed Whitman and twelve other white settlers. This

3131-661: The Oregon boundary dispute was highly contested between Britain and the United States. Disputed joint occupancy by Britain and the U.S. lasted for several decades. With American settlers pouring into Oregon Country , Hudson's Bay Company , which had previously discouraged settlement because it conflicted with the fur trade, reversed its position in an attempt to maintain British control of the Columbia District . Fur trapper James Sinclair , on orders from Sir George Simpson , Governor of

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3232-595: The San Juan Islands is heavily inhabited by killer , gray, and humpback whales. In Eastern Washington, the flora is vastly different. Tumbleweeds and sagebrush dominate the landscape throughout large parts of the countryside. Russian olives and other trees are common alongside riverbanks; however, apart from the riversides, large swaths of Eastern Washington have no naturally existing trees at all (though many trees have been planted and are irrigated by people, of course). A wider variety of flora can be found in both

3333-618: The Treaty of Tordesillas , which they maintained made the Pacific a "Spanish lake" and all its shores part of the Spanish Empire. Soon thereafter, the smallpox epidemic of the 1770s devastated the Native American population. In 1778, British explorer Captain James Cook sighted Cape Flattery , at the entrance to the Strait of Juan de Fuca , but Cook did not realize the strait existed. It

3434-562: The Yakima River Valley became known for its apple orchards, while the growth of wheat using dry farming techniques became particularly productive. Heavy rainfall to the west of the Cascade Range produced dense forests, and the ports along Puget Sound prospered from the manufacturing and shipping of lumber products, particularly the Douglas fir . Other industries that developed in the state included fishing, salmon canning and mining. For

3535-585: The "deep freeze" winters of 1883–1884, 1915–1916, 1949–1950, and 1955–1956, among others. During these events, Western Washington experienced up to 6 feet (1.8 m) of snow, sub-zero (−18 °C) temperatures, three months with snow on the ground, and lakes and rivers frozen over for weeks. Seattle's lowest officially recorded temperature is 0 °F (−18 °C) set on January 31, 1950, but low-altitude areas approximately three hours away from Seattle have recorded lows as cold as −48 °F (−44 °C). The Southern Oscillation greatly influences weather during

3636-629: The 12 original state roads. The first state highway districts, each managed by a District Engineer, were established in 1918. During this period, the construction of highways began. In 1921, the State Highway Board was replaced by the Washington Highway Committee and the Washington State Highways Department became a division of the Washington State Department of Public Works. The first gas tax (1 ¢ per gallon)

3737-658: The 1961 bridge opening and the state needed to reacquire access to and restore operational conditions on both landings. During the course of the closure an additional ferry route was temporarily added between Edmonds and Port Townsend until February 1980, when it was replaced with additional Lofall–South Point runs. The Hood Canal Bridge re-opened to vehicular traffic on October 24, 1982. The temporary ferries, which had carried 3,100 vehicles per day, were retired within several days. The west portion replacement had been designed and constructed in less than three years using $ 100 million in federal emergency bridge replacement funds at

3838-547: The 1990s. The region has been home to many established tribes of indigenous peoples for thousands of years. They are notable for their ornately carved welcome figures, canoes, long houses and masks. Prominent among their industries were salmon fishing and, notably among the Makah , whale hunting. The peoples of the Interior had a different subsistence-based culture based on hunting, food-gathering and some forms of agriculture, as well as

3939-573: The 49th parallel to the United States in the Oregon Treaty on June 15, 1846. In 1836, a group of missionaries, including Marcus Whitman , established several missions and Whitman's own settlement Waiilatpu, in what is now southeastern Washington state, near present-day Walla Walla County , in the territory of both the Cayuse and the Nez Perce Indian tribes. Whitman's settlement would in 1843 help

4040-479: The 49th parallel until the Strait of Georgia . Vague wording in the treaty left the ownership of the San Juan Islands in doubt; during the so-called Pig War , both nations agreed to a joint military occupation of the islands. Kaiser Wilhelm I of the German Empire was selected as an arbitrator to end the dispute, with a three-man commission ruling in favor of the United States in 1872. The border established by

4141-681: The Hudson's Bay Company, led some 200 settlers from the Red River Colony west in 1841 to settle on Hudson Bay Company farms near Fort Vancouver . The party crossed the Rockies into the Columbia Valley , near present-day Radium Hot Springs , British Columbia, then traveled south-west down the Kootenai River and Columbia River. Despite such efforts, Britain eventually ceded all claims to land south of

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4242-604: The Idaho border). The Olympic mountains and Cascades compound this climatic pattern by causing orographic lift of the air masses blown inland from the Pacific Ocean, resulting in the windward side of the mountains receiving high levels of precipitation and the leeward side receiving low levels. This occurs most dramatically around the Olympic Mountains and the Cascade Range. In both cases, the windward slopes facing southwest receive high precipitation and mild, cool temperatures. While

4343-656: The Oregon Treaty and finalized by the arbitration in 1872 remains the boundary between Washington and British Columbia . The growing population of Oregon Territory north of the Columbia River formally requested a new territory. As a result of the Monticello Convention , held in present-day Cowlitz County , the U.S. Congress passed legislation to create Washington Territory . It was signed into law by President Millard Fillmore on March 2, 1853. The boundary of Washington Territory initially extended farther east than

4444-481: The Pacific coast to 40 °F (4 °C) in the northeast. The lowest temperature recorded in the state was −48 °F (−44 °C) in Winthrop and Mazama . The highest recorded temperature in the state was 120 °F (49 °C) at Hanford on June 29, 2021. Both records were set east of the Cascades. Western Washington is known for its mild climate, considerable fog, frequent cloud cover, long-lasting drizzles in

4545-465: The Puget Sound lowlands are known for clouds and rain in the winter, the western slopes of the Cascades receive larger amounts of precipitation, often falling as snow at higher elevations. Mount Baker , near the state's northern border, is one of the snowiest places in the world. In 1999, it set the world record for snowfall in a single season—1,140 inches (95 ft; 29 m). East of the Cascades,

4646-608: The Tse-whit-zen site in Port Angeles and begin searching for a more suitable place to build. Many sites were considered but the best option to be found by WSDOT was in Tacoma, Wash. at Concrete Technology. Construction began on the new east-half floating pontoons at Concrete Technology in April 2006. Fourteen pontoons were built in four cycles at the site. Completed pontoons were floated out of

4747-578: The United States Congress, the 1878 constitution is an important historical document that shows the political thinking of the time; it was used extensively during the drafting of Washington state's 1889 constitution, the one and only official Constitution of the State of Washington. Washington became the 42nd state of the United States on November 11, 1889. Early prominent industries in the new state included agriculture and lumber. In Eastern Washington,

4848-516: The area. During the Great Depression , a series of hydroelectric dams were constructed along the Columbia River as part of a project to increase the production of electricity. This culminated in 1941 with the completion of the Grand Coulee Dam , the largest concrete structure in the United States and the largest dam in the world at its construction. During World War II, the state became

4949-539: The bridge for the east-half replacement, the Washington State Department of Transportation conducted a five-day survey of bridge use in early June 1998 in order to assess closure impact and plan effective mitigation strategies. The survey was in three stages: A video camera count of traffic on weekdays (Tuesday and Wednesday) and a weekend (Friday through Sunday) to estimate average volume; the use of that video to record license plate numbers for vehicle registration addresses to assess which communities would be most affected; and

5050-518: The climate becomes less arid, with annual rainfall increasing as one goes east to 21.2 inches (540 mm) in Pullman, near the Washington–Idaho border. The Okanogan Highlands and the rugged Kettle River Range and Selkirk Mountains cover much of the state's northeastern quadrant. The Palouse southeast region of Washington was grassland that has been mostly converted into farmland, and extends to

5151-680: The cold season. During the El Niño phase, the jet stream enters the U.S. farther south through California, therefore late fall and winter are drier than normal with less snowpack. The La Niña phase reinforces the jet stream through the Pacific Northwest, causing Washington to have more rain and snow than average. In 2006, the Climate Impacts Group at the University of Washington published The Impacts of Climate change in Washington's Economy ,

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5252-440: The concrete surfaces of all marine growth, epoxy , and tension them with a number of cables welded to a variety of attachment points. This system seemed to work from when the bridge opened in 1961 until the disaster of 1979. The eastern approach span weighs more than 3,800 tons (3,400 tonnes) and the western approach span weighs more than 1,000 tons (907 tonnes) The Hood Canal Bridge suffered catastrophic failure in 1979 during

5353-630: The confluence with the Snake River on July 9, 1811, and erected a pole and a notice claiming the territory for Great Britain and stating the intention of the North West Company to build a trading post at the site. Britain and the United States agreed to what has since been described as "joint occupancy" of lands west of the Continental Divide to the Pacific Ocean as part of the Anglo–American Convention of 1818 , which established

5454-693: The contiguous 48 states. Western Washington also is home of the Olympic Mountains , far west on the Olympic Peninsula , which support dense forests of conifers and areas of temperate rainforest . These deep forests, such as the Hoh Rainforest , are among the only rainforests in the continental United States. While Western Washington does not always experience a high amount of rainfall as measured in total inches of rain per year, it does consistently have more rainy days per year than most other places in

5555-408: The country by road. 11 U.S. Routes entered Washington at the time . Later in 1929, the Highway Committee was merged with the State Highways Department. The Lake Washington Floating Bridge and the original Tacoma Narrows Bridge opened in 1940. The Tacoma Narrows Bridge collapsed because of winds on November 7 that year, earning it the name Galloping Gertie . The Washington State Highway Commission

5656-419: The country. Eastern Washington —the part of the state east of the Cascades—has a relatively dry climate, in distinct contrast to the west side. It includes large areas of semiarid steppe and a few truly arid deserts in the rain shadow of the Cascades; the Hanford reservation receives an average annual precipitation of 6 to 7 inches (150 to 180 mm). Despite the limited amount of rainfall, agriculture

5757-408: The current state of Washington. Residents of Washington (known as "Washingtonians") and the Pacific Northwest simply refer to the state as "Washington", and the nation's capital "Washington, D.C.", "the other Washington", or simply "D.C." The 9,300-year-old skeletal remains of Kennewick Man , one of the oldest and most complete human remains found in North America, were discovered in Washington in

5858-410: The eastern part of the Oregon–Washington border. During Washington's partition from Oregon, the original plan for the border followed the Columbia River east until the confluence with the Snake, and then would have followed the Snake River east; this was changed to keep Walla Walla 's fertile farmland in Washington. To the west of Washington lies the Pacific Ocean. Its northern border lies mostly along

5959-440: The failure, the bridge had been closed to highway traffic and the tower crew had evacuated; no casualties resulted. Evidence points to blown-open hatches allowing flooding of the pontoons as the cause of the sinking. Efforts to repair the bridge began immediately and Washington Secretary of Transportation William A. Bulley secured a commitment of federal emergency relief money for the project. On June 15, 1979, actual work began with

6060-435: The first time, and then towed into place and anchored, sea conditions in the Hood Canal were too severe and the pontoons were returned to a nearby bay until a better method of attaching could be devised. The structural engineers and the contractor decided the design was faulty. A new contractor was hired and the design modified. It was decided to use a large rubber dam between each of the two pontoons as they were attached, clean

6161-421: The fledgling United States. American captain Robert Gray (for whom Grays Harbor County is named) then discovered the mouth of the Columbia River. He named the river after his ship, the Columbia . Beginning in 1792, Gray established trade in sea otter pelts. The Lewis and Clark Expedition entered the state on October 10, 1805. Explorer David Thompson , on his voyage down the Columbia River, camped at

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6262-401: The graving dock in Tacoma and transported to Seattle for outfitting at Todd Shipyards. Outfitting included adding all electrical and mechanical parts, connecting the pontoons into sections, and building the roadway on top of the pontoons. Another three pontoons, built during the west-half bridge replacement in the early 1980s, were retrofitted in Seattle. In planning for a prolonged closure of

6363-437: The highway system) and state airports . WSDOT was founded as the Washington State Highway Board and the Washington State Highways Department on March 13, 1905, when then-governor Albert Mead signed a bill that allocated $ 110,000 to fund new roads that linked the state. The State Highway Board was managed by State Treasurer, State Auditor, and Highway Commissioner Joseph M. Snow and the Board first met on April 17, 1905, to plan

6464-547: The land on both sides of the Cascades. From the Cascade Mountains westward, Western Washington has a mostly Mediterranean climate , with mild temperatures and wet winters, autumns and springs, and relatively dry summers. The Cascade Range has several volcanoes , which reach altitudes significantly higher than the rest of the mountains. From north to south, these major volcanoes are Mount Baker , Glacier Peak , Mount Rainier , Mount St. Helens , and Mount Adams . All are active volcanoes. Mount Rainier—the tallest mountain in

6565-411: The mailing of a questionnaire to the registered owners of those vehicles seeking information on trip origin, destination, and purpose, and choice of travel alternatives during a bridge closure. The video count produced a weekday average of 14,915 trips/day and a weekend average of 18,759 trips/day. Peak volumes reach 20,000 vehicles on summer weekends . The vehicle registration information indicated that

6666-429: The major mountain passes crossed by state highways. In the Snoqualmie Pass area, the agency has avalanche control crews that use an M60 tank , howitzers , and a mechanical tram carrying explosives to clear snow buildup before it endangers the highway. WSDOT manages the official ferry service in Washington. WSDOT's ferry service, called Washington State Ferries, is the largest in the United States and third largest in

6767-403: The most prominent reptiles and amphibians. Coastal bays and islands are often inhabited by plentiful amounts of shellfish and whales. There are five species of salmon that ascend the Western Washington area, from streams to spawn. Hood Canal Bridge The bridge is officially named after William A. Bugge (1900–1992), the director of the Department of Highways from 1949 to 1963, who

6868-465: The national capital , both named after George Washington (the first U.S. president ). Washington borders the Pacific Ocean to the west, Oregon to the south, Idaho to the east, and shares an international border with the Canadian province of British Columbia to the north. Olympia is the state capital , and the most populous city is Seattle . Washington is the 18th-largest state , with an area of 71,362 square miles (184,830 km ), and

6969-409: The north Pacific Ocean, the continental air masses of North America, and the Olympic and Cascade mountains. In the spring and summer, a high-pressure anticyclone system dominates the north Pacific Ocean, causing air to spiral out in a clockwise fashion. For Washington, this means prevailing winds from the northwest bring relatively cool air and a predictably dry season . In the autumn and winter,

7070-464: The old pontoons of the east-half to be cut away and the new pontoons floated into position, cabled together and connected by cables to large anchors on the sea floor. The transition spans and center draw span were also replaced during this closure. The bridge reopened June 3, 2009. The pontoons and anchors for the bridge could not be built at the bridge site due to space and facility limitations. WSDOT evaluated different sites at which to build during

7171-404: The present state, including what is now the Idaho Panhandle and parts of western Montana, and picked up more land to the southeast that was left behind when Oregon was admitted as a state; the creation of Idaho Territory in 1863 established the final eastern border. A Washington state constitution was drafted and ratified in 1878, but it was never officially adopted. Although never approved by

7272-533: The program is expected to cost $ 7.8 billion by 2030. WSDOT divides the state into six regions: the Olympic , Northwest , Southwest, North Central, South Central, and Eastern . The Northwest Region is subdivided into three more regions, which are King County , Snohomish County , and Baker ( Whatcom , Skagit , Island , and San Juan counties). WSDOT is overseen by the Governor of Washington . The governor appoints

7373-630: The region were ceded in the early 19th century through a series of treaties. The Spanish signed the Adams–Onís Treaty of 1819, and the Russians the Russo-American Treaty of 1824 and 1825 . The Oregon Question remained contested between the United Kingdom and the United States until the 1846 Oregon Treaty established the border between British North America and the United States along

7474-411: The removal of the west truss and transport for storage. The state's department of transportation attempted to mitigate the impact of the disaster by redirecting traffic to US Highway 101 to drive around the 50-mile (80 km) length of Hood Canal and by reestablishing the state ferry run between Lofall and South Point across the canal just south of the bridge. This route had been discontinued after

7575-746: The site and begin construction. Within the first two weeks of construction, artifacts were found from an ancestral burial ground from an ancient village called Tse-whit-zen . WSDOT stopped all work on the site, and a government-to-government consultation process began among the Lower Elwha Klallam Tribe , WSDOT, the Federal Highway Administration, the Army Corps of Engineers, and the State Historical Preservation Office. On August 14, 2006, WSDOT agreed to donate

7676-617: The site to the Lower Elwha Klallam tribe, rebury all remains uncovered, and pay $ 2.5 million in damages. It is believed that this discovery may be documentation of the first time that Natives and non-Natives began to interact on this shore . These historical findings will be investigated thoroughly by the Lower Elwha Klallam Tribe and archaeologists. On December 21, 2004, Governor Locke and Secretary MacDonald announced that WSDOT would stop pontoon and anchor construction at

7777-435: The state of Washington and the city of Washington, D.C., led to renaming proposals during the statehood process for Washington in 1889, including David Dudley Field II 's suggestion to name the new state "Tacoma"; these proposals failed to garner support. Washington, D.C.'s, own statehood movement in the 21st century has included a proposal to use the name "State of Washington, Douglass Commonwealth", which would conflict with

7878-544: The state's economy. Washington ranks second only to California in wine production. Manufacturing industries in Washington include aircraft, missiles, shipbuilding, and other transportation equipment, food processing, metals, and metal products, chemicals, and machinery. The state was formed from the western part of the Washington Territory , which was ceded by the British Empire in the Oregon Treaty of 1846. It

7979-485: The state's land area, mostly west of the northern Cascades. Approximately two-thirds of Washington's forested area is publicly owned, including 64 percent of federal land. Common trees and plants in the region are camassia , Douglas fir, hemlock, penstemon , ponderosa pine, western red cedar , and many species of ferns. The state's various areas of wilderness offer sanctuary, with substantially large populations of shorebirds and marine mammals. The Pacific shore surrounding

8080-505: The state— is 50 miles (80 km) south of the city of Seattle, from which it is prominently visible. The U.S. Geological Survey considers 14,411-foot-tall (4,392 m) Mount Rainier the most dangerous volcano in the Cascade Range, due to its proximity to the Seattle metropolitan area , and most dangerous in the continental U.S. according to the Decade Volcanoes list. It is also covered with more glacial ice than any other peak in

8181-456: The territory and founded New Market, now Tumwater , in 1846. They settled in Washington to avoid Oregon 's black exclusion law , which prohibited African Americans from entering the territory while simultaneously prohibiting slavery . After them, many more settlers, migrating overland along the Oregon Trail, wandered north to settle in the Puget Sound area. Spanish and Russian claims to

8282-522: The territory was to be named "Columbia", for the Columbia River and the Columbia District , but Kentucky representative Richard H. Stanton found the name too similar to the District of Columbia (the national capital, itself containing the city of Washington), and proposed naming the new territory after President Washington. Washington is the only U.S. state named after a president. Confusion between

8383-415: The tropical Pacific regions a great distance into the Pacific Northwest. Western Washington is very cloudy during much of fall, winter, and early spring. Seattle averages the least sunshine hours of any major city in the United States. Despite Western Washington's marine climate similar to many coastal cities of Europe, there are exceptions such as the "Big Snow" events of 1880, 1881, 1893, and 1916, and

8484-506: The urban transportation system of Seattle. The Washington State Department of Transportation was authorized by the state legislature and assumed the responsibilities of several agencies on September 21, 1977. William A. Bulley, the existing Director of Highways, was appointed as the state's first Secretary of Transportation to lead the new agency, which had absorbed state departments that had overseen highways, toll bridges, aeronautics, canals, and community development. The State Highway Commission

8585-499: The water, however, made construction of support columns for other bridge types prohibitively expensive. The water depth below the pontoons ranges from 80 to 340 feet (25 to 105 m). In its marine environment, the bridge is exposed to tidal swings of 16.5 feet (5 m). The pontoons for the bridge were fabricated in the Duwamish Waterway in Seattle ; during fabrication, two of the pontoons sank. When they were attached for

8686-665: The weekend 48% of westbound trips originated on the north and central Kitsap Peninsula , with 88% of the destinations in areas near Port Ludlow, Port Townsend, Sequim, and Port Angeles. For weekday trips, nearly 55% of westbound trips originated in northern or central Kitsap County with 90% of the destinations in the Port Ludlow, Port Townsend, Sequim, and Port Angeles areas. A large number of eastbound weekday morning trips appeared to be for commuting purposes, with 92% of those trips originating in Port Ludlow, Port Townsend, Sequim, or Port Angeles, and 60% with central or northern Kitsap County as

8787-523: The west; mountain ranges in the west, center, northeast, and far southeast; and a semi-arid basin region in the east, center, and south, given over to intensive agriculture. Washington is the second most populous state on the West Coast and in the Western United States, after California . Mount Rainier , an active stratovolcano , is the state's highest elevation at 14,411 feet (4,392 meters), and

8888-771: The winter and warm, temperate summers. The eastern region, which does not benefit from the general moderating effect of the Pacific Ocean, occasionally experiences extreme climate. Arctic cold fronts in the winter and heat waves in the summer are not uncommon. In the Western region, temperatures have reached as high as 118 °F (48 °C) in Maple Valley during the June 2021 heat wave , and as low as −6 °F (−21 °C) in Longview , and even -8 F (-22 C) in Sammamish . Forests cover about half

8989-462: The workplace. In 1950, Seattle's first black representative for the state's legislature was elected. At the 1970 U.S. census , the black population grew to 7.13% of the total population. In 1970, the state was one of only four U.S. states to have been providing legal abortions before the 1973 Supreme Court decision in Roe v. Wade which loosened abortion laws nationwide. On May 18, 1980, following

9090-566: The world. Ferries had been in the Puget Sound since the 1950s. There are 10 routes and 22 ferries currently operating. WSDOT began operating the Travel Washington intercity Bus program in 2007. There are currently four lines: As of 2008, there were about 250 projects that were being planned or constructed by WSDOT. Some of the most notable projects that were recently finished include the Tacoma Narrows Bridge project, which built

9191-552: Was a leader in the planning and construction of the bridge. The design and planning process for the Hood Canal Bridge took nearly a decade amid criticism from some engineers throughout that time. Critics questioned the use of floating pontoons over salt water, especially at a location with high tide fluctuations and the concern that the funneling effect of the Hood Canal might magnify the intensity of winds and tides. The depth of

9292-453: Was admitted to the Union as the 42nd state in 1889. One of the wealthiest and most socially liberal states in the country, Washington consistently ranks among the top states for highest life expectancy and employment rates. It was one of the first states (alongside Colorado ) to legalize medicinal and recreational cannabis , was among the first states to introduce same-sex marriage , and

9393-527: Was called the Whitman massacre in 1847. This event triggered the Cayuse War between settlers and Indians. Fort Nisqually , a farm and trading post of the Hudson's Bay Company and the first European settlement in the Puget Sound area, was founded in 1833. Black pioneer George Washington Bush and his Caucasian wife, Isabella James Bush, from Missouri and Tennessee , respectively, led four white families into

9494-542: Was completed in 1972, and the first HOV lanes in Washington were installed on SR 520 that same year. A combined state department of transportation was proposed in the mid-1960s and gained the support of Governor Dan Evans . Charles Prahl, who resigned as head of the Department of Highways, criticized the Evans administration's proposal to create a transportation "superagency" and the prioritization of rapid transit in plans for

9595-572: Was formed in 1951. On June 29, 1956, President Dwight Eisenhower signed the Federal Aid Highway Act of 1956 , which started the Interstate Highway System . Originally, two Interstates entered Washington ; most work was not completed until the 1970s. In 1964, the state highways were renumbered to the current system . Metro Transit was created in 1972 and work on highways rapidly continued. The North Cascades Highway (SR 20)

9696-608: Was levied and Homer Hadley started planning a pontoon bridge across Lake Washington , which would later become the Lacey V. Murrow Memorial Bridge , which opened on July 2, 1940. In 1923, the State Highways Department separated from the Public Works Department and organized the first official system of highways, Washington's state road system. In 1926, the U.S. government approved the U.S. route system, which connected

9797-593: Was not discovered until Charles William Barkley , captain of the Imperial Eagle , sighted it in 1787. The straits were further explored by Spanish explorers Manuel Quimper in 1790 and Francisco de Eliza in 1791, and British explorer George Vancouver in 1792. The British–Spanish Nootka Convention of 1790 ended Spanish claims of exclusivity and opened the Northwest Coast to explorers and traders from other nations, most notably Britain and Russia as well as

9898-494: Was one of only four states to have provided legal abortions on request before Roe v. Wade in 1973. Washington voters also approved a 2008 referendum on the legalization of physician-assisted suicide , making it one of 10 states to have legalized the practice. Washington was named after President George Washington by an act of the United States Congress during the creation of Washington Territory in 1853;

9999-457: Was opened in 1943 and played a major role in the construction of atomic bombs . After the end of World War II, and with the beginning of the civil rights movement , the state's growing Black or African American population's wages were 53% above the national average. The early diversification of Washington through the Great Migration led to successful efforts at reducing discrimination in

10100-442: Was ordered to stop collecting tolls on August 29. In a project that lasted from 2003 to 2009, WSDOT replaced the east-half floating portion of the bridge, the east and west approach spans, the east and west transition spans, and the west-half electrical system. The total cost of the project, about $ 471 million, was paid for by state, federal and agency funds. The project required the bridge to close to traffic for five weeks to allow

10201-530: Was renamed to the Washington State Transportation Commission, with its first meeting taking place on September 21, 1977. On February 13, 1979, the western pontoons of the Hood Canal Bridge were swept away by a wind storm. In 1980, Mount St. Helens erupted and caused damage to many state highways, mainly SR 504 . The Hood Canal Replacement Bridge opened on October 3, 1982, and the Lacey V. Murrow Memorial Bridge collapsed on November 25, 1990. In 1991,

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