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319 results

Project

SR 520 148th Ave NE interchange - Overlake Access Ramp - Complete December 2023

Timeline: Summer 2021-Fall 2023
  • Road
  • Completed
  • King County
With this Connecting Washington project, we made multiple improvements to the State Route 520/148th Avenue Northeast interchange within the cities of Bellevue and Redmond.

Our contractor, Granite Construction, built a direct-access off-ramp from eastbound SR 520 to the Overlake…
Major Project

SR 520 Bridge Replacement and HOV Program

Timeline: 2011 - 2030
The SR 520 Bridge Replacement and HOV Program enhances travel safety and mobility with modern, structurally stronger bridges, as well as substantial transit and roadway improvements along this urban corridor. Built in stages, the improvements extend from I-405 in Bellevue to I-5 in Seattle.
Project

SR 520 Eastside Transit and HOV Project - Complete Summer 2015

Timeline: Construction began 2011; completed in 2015
  • Road
  • Completed
  • King County
This project added bus/carpool lanes in both directions between 108th Avenue Northeast in Bellevue and Lake Washington’s eastern shore. The project also built three landscaped, community-connecting highway lids over the highway, two transit stations in the highway median and the first leg of a…
Project

SR 520 Floating Bridge and Landings Project - Complete Summer 2017

Timeline: Bridge construction began in spring 2012 and was completed in summer 2017.
  • Road
  • Completed
  • King County
We replaced the world's longest floating bridge – a four-lane, 1960s-era structure – with a safer, six-lane bridge designed to withstand stronger windstorms and waves. Opened in April 2016, the new bridge also added shoulders for disabled vehicles and a separated, 14-foot-wide path for…
Project

SR 520 I-5 Express Lanes Connection Project

Timeline: August 2021 - 2024
  • Road
  • Construction
  • King County
The SR 520/I-5 Express Lanes Connection Project will create a dedicated reversible transit and carpool connection between SR 520 and the I-5 Express Lanes, along with a reversible transit/carpool ramp at the I-5/Mercer Street interchange.
Project

SR 520 Montlake Project

Timeline: Summer 2019 - 2024
  • Road
  • Construction
  • King County
The Montlake Project will improve transportation for both motorized and nonmotorized travel along the corridor with a new SR 520 eastbound bridge over Union Bay. This project also builds a new, three-acre lid covering the highway in Montlake that will include regional transit stops and open green…
Project

SR 520 Pontoon Construction Project - Complete Spring 2015

Timeline: Construction of the casting basin and pontoons began in Aberdeen in 2011. Pontoon construction ended in spring 2015.
  • Road
  • Completed
  • King County
The SR 520 floating bridge is supported and stabilized by 77 concrete pontoons . The Pontoon Construction Project built a casting basin and 33 of the bridge’s pontoons in Aberdeen, Washington. We built 44 of the bridge’s smaller pontoons in Tacoma, Washington, as part of the Floating Bridge and…
Project

SR 520 Portage Bay and Roanoke Lid Project

Timeline: Estimated 2024-2030
  • Road
  • Pre-construction
  • King County
The Portage Bay Bridge and Roanoke Lid Project will replace the aging Portage Bay Bridge with a seismically resilient structure that includes improved bus/carpool travel and an extension of the SR 520 Trail. This project also builds a landscaped lid between Seattle’s Roanoke Park and North Capitol…
Project

SR 520 West Approach Bridge North Project - Complete December 2017

Timeline: Construction began in September 2014 and finished in December 2017.
  • Road
  • Completed
  • King County
The West Approach Bridge North Project extended SR 520’s three westbound lanes, including a transit/HOV lane, from the new floating bridge to Seattle’s Montlake neighborhood. It also expanded the new SR 520 Trail across Lake Washington to Seattle.
Project

SR 520/124th Avenue NE Interchange Project

Timeline: This project is currently in the preliminary engineering stage.
  • Road
  • Pre-construction
  • King County
We are examining solutions to reduce congestion at the I-405/SR 520 interchange. Currently, over half the trips from westbound SR 520 are traveling to the Bellevue vicinity. A new project will allow westbound drivers the option to access the downtown Bellevue vicinity by exiting SR 520 onto 124th…
Project

SR 522 - I-5 to 61st Ave NE - Paving & ADA Compliance

Timeline: Spring 2020 to Fall 2022
  • Road
  • Construction
  • King County
WSDOT contractor crews will repave sections of SR 522, commonly known as Lake City Way or Northeast Bothell Way, which were last paved in 2002.
Project

SR 522 - Paradise Lake Rd to Snohomish River Br - Interchange & Widening

Timeline: 2017 - 2025
  • Road
  • Pre-construction
  • Snohomish County
SR 522 in Snohomish County is an increasingly important north-south route connecting communities between Woodinville and Monroe. One section between Paradise Lake Road in Maltby and the Snohomish River remains one-lane in each direction. We plan to widen the highway to two lanes in each direction,…
Project

SR 522/Thornton Creek Fish Passage

Timeline: 2023-2028
  • Road
  • Pre-construction
  • King County
Reconnecting waterways where roads act as barriers is a priority for the state. In western Washington, this means building hundreds of fish-passable structures under state highways to create habitat that is essential for meeting fish recovery goals.

A culvert below State Route 522…
Project

SR 524/Martha Creek to Swamp Creek Fish Passage

Timeline: Fall 2025 - Spring 2028
  • Road
  • Pre-construction
  • Snohomish County
This project will remove a barrier to fish passage along Martha Creek on State Route 524 near Lynnwood. Contractor crews working for WSDOT will remove the existing culvert and replace it with a fish-passable structure. This new structure has the potential to open more than 1.5 miles of habitat for…
Project

SR 524/Scriber Creek Fish Passage

Timeline: Spring 2023 - Summer 2028
  • Road
  • Pre-construction
  • Snohomish County
Reconnecting waterways where roads act as barriers is a priority for the state. In western Washington, this means building hundreds of fish passage structures under state highways to create habitat that is essential for meeting fish recovery goals.

A culvert under State Route 524…
Project

SR 525 Pedestrian and Traffic Improvements

Timeline: October 2023 - Spring 2024
  • Road
  • Construction
  • Snohomish County
In fall 2023, we added 4 feet of width to a sidewalk along northbound State Route 525/Mukilteo Speedway in Mukilteo to make it 7.5 feet wide on a bridge over the BNSF railroad tracks. We also added new ADA-compliant curb ramps and upgraded the railing between Second and First streets.
Project

SR 525 — Clinton Ferry Terminal Vicinity — Pedestrian Connectivity - Completed June 2023

Timeline: Spring 2023 - Fall 2023
  • Ferry
  • Road
  • Completed
  • Island County
This connectivity project improved the pedestrian access route on State Route 525 in Clinton from the Park & Ride at Deer Lake Road (milepost 8.9) to the Washington State Ferries — Clinton Ferry Terminal (milepost 8.5).

Project improvements included the sidewalk, crosswalks,…
Project

SR 525/Box Springs, Maple Creek and Unnamed Tributary to Swamp Creek Fish Passage

Timeline: Fall 2025 - Spring 2028
  • Road
  • Pre-construction
  • Snohomish County
This project will remove three barriers to fish passage along Box Springs Creek, Maple Creek and Unnamed Tributary to Swamp Creek under State Route 525 near Lynnwood. Contractor crews working for WSDOT will remove existing culverts and replace them with fish-passable structures. These new…
Project

SR 525/I-405 Interchange to SR 99 Vicinity - Paving & ADA

Timeline: Summer 2025 - Fall 2025
  • Road
  • Pre-construction
  • Snohomish County
Crews working for WSDOT will pave roughly two miles in both directions of State Route 525 from the Interstate 405 interchange to just south of 148th Street Southwest, as well as, eight ramps. The two bridges over Alderwood Mall Parkway and Maple Road will not be paved. Once contractor crews finish…
Project

SR 526 - Airport Road to Casino Road Seismic Retrofit - Complete December 2023

Timeline: February 2023 to December 2023
  • Road
  • Completed
  • Snohomish County
Our contractor crews strengthened four bridges along State Route 526 in Everett so they can better withstand a major earthquake. They wraped steel “jackets” around the columns that support the bridges to hold the concrete together in an earthquake, reducing the chance of collapse. They also added…
Project

SR 526 - Corridor Improvements

Timeline: Spring 2017 - Spring 2026
  • Road
  • Pre-construction
  • Snohomish County
Portions of the State Route 526 corridor will be improved with construction of an eastbound lane between Hardeson Road/5th Ave NW and I-5, improved signal operations at the SR 526/527 intersection and new ramp meters from eastbound SR 526 to northbound I-5. Work includes roadway widening in…
Project

SR 527 - Penny Creek - Fish Passage

Timeline: Fall 2022 - Fall 2025
  • Road
  • Pre-construction
  • Snohomish County
As part of WSDOT’s fish passage program, we will build a 26-foot fish-passable structure under SR 527 just south of 164th Street Southeast in Mill Creek. The current 9-foot culvert causes water to flow too fast for fish to continue upstream. The new bridge span will open more than 8 miles of…
Project

SR 528/Munson Creek to Allen Creek Fish Passage

Timeline: Spring 2022 - Fall 2027
  • Road
  • Pre-construction
  • Snohomish County
As part of the state's fish recovery efforts, WSDOT has made it a priority to reconnect waterways where our roads act as barriers. In western Washington, that means building hundreds of fish passable structures under state highways in the next decade to create habitat gain essential for…
Project

SR 529/Snohomish River & Steamboat Slough - Bridge Repair, Rehab & Paint

Timeline: Summer 2023 – Winter 2024
  • Road
  • Construction
  • Snohomish County
Corrosion from weather is damaging the Snohomish River Bridge and Steamboat Slough Bridge. Beginning in 2023, crews working for WSDOT will rehabilitate the northbound SR 529 Snohomish River Bridge between Everett and Marysville by repairing or replacing steel truss elements, substructure elements,…
Project

SR 530 - 59th Ave NE and 211th Place NE intersection improvements - Complete August 2023

Timeline: Summer 2021 - Fall 2023
  • Road
  • Completed
  • Snohomish County
WSDOT built two compact roundabouts on SR 530 at the intersections of 59th Avenue Northeast and 211th Place Northeast, just west of Arlington. These compact roundabouts reduce the risk of serious collisions at these intersections as drivers will no longer have to make turns across lanes of fast-…
Project

SR 530 Montague Creek Bridge to Seeman Street Vic Paving - Completed September 2023

Timeline: June 2023 - September 2023
  • Road
  • Completed
  • Snohomish County
This project, located in Snohomish County included paving along State Route 530 between milepost 35 to 36, 38 to 40, 42 to 48 as well as on several bridges along the corridor.

The asphalt on this stretch of SR 530 has outlived its anticipated lifespan. Through the years, cracks, ruts…
Project

SR 531 - 43rd Ave NE to 67th Ave NE - Widening

Timeline: July 2019 - Winter 2026
  • Road
  • Pre-construction
  • Snohomish County
This section of SR 531 between 43rd Avenue Northeast and 67th Avenue Northeast in Arlington will be widened to add a second lane in each direction. In addition, roundabouts will be added at three intersections to improve safety, travel times and reduce congestion.
Project

SR 534 Unnamed Tributary to Carpenter Creek Fish Passage - Completed November 2023

Timeline: June 2023 - October 2023
  • Road
  • Completed
  • Skagit County
WSDOT removed the existing 35-foot long, 36 inch in diameter concrete pipe at the State Route 534 Unnamed Tributary to Carpenter Creek fish passage site located at milepost .5 in Conway and replaced it with a fish passable structure.
Project

SR 538 - Logan Creek Fish Passage - Complete Spring 2022

Timeline: Summer 2019 - Spring 2022
  • Road
  • Completed
  • Skagit County
This project provides for the improvement of Logan Creek fish passage along SR 538 in Mount Vernon located in Skagit County by replacing the existing culvert with a new buried fish passage structure.

Project

SR 539 Duffner Ditch Fish Passage - Complete Winter 2023

Timeline: Summer 2023-Winter 2023
  • Road
  • Completed
  • Whatcom County
This project will replace a fish barrier on State Route 539/Guide Meridian just north of Front Street in Lynden and replace it with a fish passable structure.

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