U.S. Route 2 in Washington

A reassurance shield on the Hewitt Avenue Trestle, carrying US 2 over the Snohomish River between Everett and Ebey Island.

US 2 is defined by the Washington State Legislature as SR 2, part of the Revised Code of Washington as §47.17.005.[3] Every year, WSDOT conducts a series of surveys on its highways in the state to measure traffic volume. This is expressed in terms of annual average daily traffic (AADT), which is a measure of traffic volume for any average day of the year. In 2013, WSDOT calculated that the busiest section of US 2 within Washington was the Hewitt Avenue Trestle above the Snohomish River east of Everett, carrying over 76,000 vehicles, while the least busiest section of US 2 is in Moses Coulee, carrying 630 vehicles.[4] The entire route of US 2 within Washington is designated as part of the National Highway System,[5] classifying it as important to the national economy, defense, and mobility.[6] WSDOT designates US 2 as a Highway of Statewide Significance,[7] which includes highways that connect major communities in the state of Washington.[8]

US 2 begins in downtown Everett, with its eastbound lanes starting at the intersection of Hewitt Avenue and Maple Street, signed as SR 529, and its westbound lanes ending at the intersection of California Street and Maple Street (SR 529). The highway travels east onto the Hewitt Avenue Trestle,[9] crossing the Snohomish River after an interchange with I-5.[10] The four-lane trestle continues east across Ebey Island, intersecting Homeacres Road before crossing the Ebey Slough.[11] US 2 turns southeast at the east end of the trestle in Cavalero at an interchange with SR 204, which serves Lake Stevens.[12] The limited-access road travels around the city of Snohomish, intersecting Bickford Avenue in an at-grade intersection and SR 9 in a diamond interchange.[13][14] US 2 turns south and crosses over the Pilchuck River and the Centennial Trail before its limited-access road ends at a diamond interchange with 88th Street.[15][16] The two-lane road continues southeast along the Scenic Subdivision of the Northern Transcon, a BNSF rail line,[17][18] into Monroe. The highway travels past the Evergreen State Fairgrounds and intersects SR 522 before entering downtown Monroe.[19][20][21]

US 2, now part of a National Scenic Byway named the Stevens Pass Greenway,[22][23] continues through the city of Monroe and forms the northern terminus of SR 203. The highway leaves the city while parallel to the Skykomish River and travels through the cities of Sultan and Gold Bar. US 2 begins following the South Fork Skykomish River at Index into the Cascade Range, crossing into King County near the town of Baring. The highway enters Mount Baker-Snoqualmie National Forest and continues east along the Tye River past the town of Skykomish and the Cascade Tunnel towards Stevens Pass.[24] The pass, located 4,061 feet (1,238 m) above sea level, is also home to the Stevens Pass Ski Area and a trailhead for the Pacific Crest Trail while serving as the point in which US 2 crosses into the Wenatchee National Forest in Chelan County.[25][26] The highway continues east down Nason Creek to Coles Corner, the southern terminus of SR 207, which serves Lake Wenatchee. US 2 travels due south along the Wenatchee River valley through Leavenworth before it begins a 27-mile-long (43 km) concurrency with US 97 at a diamond interchange east of Peshastin.[19][20][27]

Truck traffic on the Pine Canyon section of US 2 west of Waterville in rural Douglas County.

US 2 and US 97 travel together on a four-lane highway on the north side of the Wenatchee River heading southeast past Cashmere heading towards Wenatchee. The roadway intersects SR 285, a short connector to downtown Wenatchee,[28] and US 97 Alternate, an alternate route to Chelan,[29] in Sunnyslope before crossing the Richard Odabashian Bridge over the Columbia River and into Douglas County. The two highways continue east into East Wenatchee and turn north at the western terminus of SR 28. US 2 and US 97 continue north between the Columbia River to the west and Badger Mountain to the east, passing the Rocky Reach Dam and its reservoir, Lake Entiat before reaching Orondo. US 2 and US 97 split at Orondo, with US 97 continuing north along the Columbia River towards Chelan and US 2 traveling east up Pine Canyon onto the Waterville Plateau. The highway travels through the town of Waterville via several turns on city streets before heading due east across the Columbia Plateau, intersecting SR 172 at Farmer. US 2 becomes concurrent with SR 17 as it descends into the Grand Coulee south of Banks Lake, becoming part of the Coulee Corridor Scenic Byway.[19][20][30]

I-90, concurrent with US 2 and US 395, traveling east into Downtown Spokane

The byway travels off US 2 and onto SR 155 east of Coulee City at Fordair, continuing north through Grant County towards the Grand Coulee Dam.[31] US 2 travels east into Lincoln County between the towns of Hartline and Almira and becomes concurrent with SR 21 in Wilbur for several city blocks. The highway parallels the Columbia River Subdivision of the BNSF Northern Transcon through Bachelor Prairie towards Davenport,[17][18] where it intersects the termini of SR 28 and SR 25. US 2 travels into Reardan concurrent with SR 231 and enters Spokane County east of the town boundary. The highway passes Fairchild Air Force Base and becomes a four-lane arterial street through Airway Heights approaching Spokane. US 2 enters the city of Spokane as a four-lane freeway northeast of Spokane International Airport and intersects Airport Way before beginning its 3.82-mile-long (6.15 km) concurrency with I-90 and US 395 at a partial cloverleaf interchange.[19][20][32][33]

I-90, US 2 and US 395 travel east into Downtown Spokane and intersects the northern terminus of US 195, which travels south towards Pullman and Lewiston, Idaho.[34] US 2 and US 395 split from I-90 and travel into Downtown Spokane on the one-way pair of Browne and Division streets,[35][36] serving the Spokane Intermodal Center and Spokane Convention Center before reaching Riverfront Park. Division Street crosses the Spokane River and the Centennial Trail on the Senator Sam C. Guess Memorial Bridge before splitting into the one-way pairing of Division and Ruby streets.[37] Division Street continues north past the NorthTown Mall and the eastern terminus of SR 291 at Francis Street before US 2 and US 395 split.[19][20]

US 2 travels northeast through Country Homes on the Newport Highway to an interchange with the North Spokane Corridor,[38] an incomplete freeway bypass of Spokane that is signed as a spur route of US 395. The highway continues west of Mead and intersects SR 206, a road serving Mount Spokane State Park, before becoming a four-lane divided highway parallel the Kooteani River Subdivision of the BNSF Northern Transcon. US 2 travels north along the Little Spokane River through Colbert and Chattaroy before leaving Spokane County and entering Pend Oreille County. The divided highway ends at the southern terminus of SR 211, located west of Diamond Lake. US 2 continues northeast along the Little Spokane River and enters the city of Newport, splitting into a one-way pair on Washington and Union avenues. The two streets travel north through the city to the eastern terminus of SR 20 and turn east onto Walnut Street and the International Selkirk Loop,[39] where US 2 crosses the Idaho state line at the northern terminus of SR 41 in Newport and ID-41 in Oldtown, Idaho.[19][20][40]

US 2 follows the route of several wagon roads and early state highways that themselves followed the route of the Skykomish River and the Great Northern Railway, a transcontinental railroad that was completed in 1893.[41] A wagon road from Snohomish to Skykomish was completed in the late 1880s,[42][43] while another wagon road along the Wenatchee River from Leavenworth to Sunnyslope was completed by 1904.[44] The modern-day route of US 2 between Snohomish and Monroe was completed as a county wagon road in 1904.[45] The state of Washington began maintaining State Road 7 in 1909,[46][47] traveling from Peshastin to Spokane on what would become the Sunset Highway and US 2.[48] The easternmost segment of US 2 within Washington, from Spokane to Newport, was added to the state highway system in 1915 as State Road 23 and renamed to the Pend Oreille Highway two years later.[49][50][51] State Road 7 was renumbered to State Road 2, part of an east–west highway connecting Seattle to Spokane.[52] The Stevens Pass Highway was opened on July 11, 1925, and traveled from Everett along the Skykomish River and over Stevens Pass towards Leavenworth.[53] The Tumwater Canyon section northwest of Leavenworth opened to traffic on September 1, 1929, and later straightened in 1937.[54] The highway was transferred to state maintenance from the Department of Highways in 1931 as State Road 15.[55][56]

The United States Highway System was adopted by the American Association of State Highway Officials (AASHO) on November 11, 1926, and included a shorter US 2, traveling from Bonners Ferry, Idaho to the Upper Peninsula of Michigan, and several routes along the modern route of US 2 in Washington.[2][57] The corridor of US 2 was signed as US 10 from Peshastin to Spokane and US 195 from Spokane to Newport, co-signed with State Road 2 and State Road 6, respectively.[58] The Washington primary and secondary state highway system was adopted by the Washington State Legislature on March 17, 1937, and the three highways that comprise the present route of US 2 were included in the system as Primary State Highway 15 (PSH 15) from Everett to Peshastin, PSH 2 from Peshastin to Spokane, and PSH 6 from Spokane to the Idaho state line in Newport via a short branch route.[59] US 10 was relocated to a southern route in 1939, crossing the Columbia River at Vantage,[60] and the former route was replaced by US 10 Alternate the following year.[61] A proposal from representatives of the highway departments of Idaho and Washington to extend US 2 to Everett was considered by the AASHO's U.S. Route Numbering Committee in January 1946, but was vetoed. The proposal resurfaced during the committee's meeting on December 20, 1946, and was approved as a replacement of US 10 Alternate from Everett to Bonners Ferry and US 195 from Spokane to Newport.[2] The yet-unbuilt highway across Stevens Pass was also proposed in 1956 as a tunnel that would be funded as an addition to the new Interstate Highway System by Senator Warren G. Magnuson, but the amendment did not make it into the final bill.[62]

The Washington state highway system was changed to its current "sign route system" beginning in January 1963 with a state highway renumbering.[63] Under the new system, Interstate highways, U.S. routes, and state routes replaced the primary and secondary highways and were codified under the Revised Code of Washington in 1970.[3] US 2 was re-routed around various cities over the next several decades onto limited-access highways to reduce congestion, beginning with the construction of the current westbound Hewitt Avenue Trestle east of Everett, which opened on April 8, 1969.[64] The existing wooden trestle was used by eastbound traffic until it was replaced by a new bridge in 2002.[65][66][67] US 2 was routed north of Wenatchee onto the Olds Station Bridge, renamed in 1991 to honor Richard Odabashian, over the Columbia River in 1975,[68] while the former alignment was designated as SR 285 in 1977.[69] The present two-lane expressway north and east of Snohomish was proposed in 1969 and completed in 1983; it was originally intended to also include an unfinished bypass of Monroe.[70][71] US 97 had its concurrency with US 2 extended from Sunnyslope to Orondo along the east side of the Columbia River in 1987 after US 97 was moved onto the former route of SR 151.[72] The Stevens Pass Greenway, which became a National Forest Scenic Byway on April 14, 1992, was re-designated as a National Scenic Byway on September 22, 2005.[73][74] Within Newport, US 2 had an unsigned spur route that traveled on the southbound lanes of ID-41 on the Idaho state line until 1997, when SR 41 was created to avoid confusion.[40][75] The intersection between US 2 and US 97 east of Peshastin was replaced by a new diamond interchange completed in October 2008 as part of general improvements to the two highways' concurrency from Peshastin to Sunnyslope.[27][76][77] The current interchange between US 2 and the North Spokane Corridor, a spur route of US 395, was opened in November 2011 to coincide with the opening of the northernmost 5.5 miles (8.85 km) of the future freeway.[78]

• Media related to Category:U.S. Route 2 in Washington (state) at Wikimedia Commons
• US 2 at Highways of Washington State
• US 2 at US Highway Ends