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I-405/Renton to Bellevue Widening and Express Toll Lanes Project

Project overview

Travelers on Interstate 405 between Renton and Bellevue experience one of the state’s worst commutes. The I-405/Renton to Bellevue Widening and Express Toll Lanes project includes multimodal transportation and safety improvements to offer more reliable travel choices and keep drivers, transit riders and freight moving.

The Renton to Bellevue project will add new capacity to create a two-lane ETL system between SR 167 in Renton and Northeast Sixth Street in Bellevue. In general, the project will add one new lane in each direction and combine the existing HOV lane with the new lane to create a dual ETL system.

The new ETLs will connect to the existing express toll lane system between Bellevue and Lynnwood, as well as the SR 167 HOT lanes via the I-405/SR 167 Interchange Direct Connector, to create a 40-mile ETL system. This project is designed to improve speeds and trip reliability for all travelers and support the new I-405 Bus Rapid Transit (BRT) line between Lynnwood and Tukwila included in the voter-approved Sound Transit 3 package.

Timeline
2015 - 2025
Project status
Construction
Funding
$705 million (contractor’s bid amount)

What to expect

Houser Way North in Renton closed for watermain and storm drainage improvements, Oct. 13 – Dec. 31 

Houser Way North between Lake Washington Boulevard North and the Lowes business delivery access will be closed from 9 a.m. Monday, Oct.13 to Wednesday, Dec. 31. Pedestrian and bike access through the Houser Way bypass trail will remain open. A signed detour route will be available. Crews will be installing a City of Renton watermain and constructing storm drainage improvements.

Northbound SR-181 left turn lane to Southcenter Boulevard closed for 120 days beginning Aug. 18 for bridge improvements

The northbound State Route 181 left turn lane to Southcenter Boulevard in Tukwila will be closed starting at 11:15 p.m. Monday, August 18. A signed detour route will be in place, where northbound SR 181 travelers will continue to Fort Dent Way, use the on-ramp to southbound I-405, and take the Seattle/Southcenter Boulevard exit.

Upcoming work

Week of Nov. 16 – Nov. 22

Impactful work adjacent to I-405:

  • Sign structure work on SR 167 between South 43rd Street and I-405 (4 nights: 11/17-11/20).
  • Work for bridge 23W on North Southport Drive (4 nights: 11/17-11/20).
  • Installing drainage along Coal Creek Parkway Southeast (4 nights: 11/17-11/20).

City of Bellevue: 

  • Paving along northbound I-405 from Coal Creek Parkway Southeast to I-90 (2 nights: 11/17-11/18).
  • Pulling box work for fiber and installing cabinet pad, cable vault, junction box, and conduits along northbound I-405 near Southeast Eighth Street (4 nights: 11/17-11/20).
  • Shifting traffic and removing barrier at the Southeast Eighth Street interchange (4 nights: 11/17-11/20).
  • Sign structure work near Northeast Sixth Street (4 nights: 11/17-11/20).
  • Sign structure work near Southeast Eighth Street (2 nights: 11/19-11/20).
  • Barrier work and investigating toll fiber along southbound I-405 between Southeast Eighth Street and I-90 (4 nights: 11/17-11/20).
  • Repairing an attenuator and conducting fiber work on southbound I-405 near I-90 (2 nights: 11/19-11/20).

City of Newcastle: 

  • Grading cast in place barrier and paving at wall 6.50 (4 nights: 11/17-11/20).
  • Panel work for noise wall 5 and sign structure work from Coal Creek Parkway Southeast to the May Creek bridge (4 nights: 11/17-11/20).
  • Watermain work at Northeast 44th Street (4 nights: 11/17-11/20).

City of Renton: 

  • Installing drainage north of wall 3.30R (4 nights: 11/17-11/20).
  • Installing drainage near Sunset Boulevard North (4 nights: 11/17-11/20).
  • Switching the maintenance of traffic near North Southport Drive (3 nights: 11/17-11/19).  
  • Grading the barrier at the northbound I-405 off-ramp near Northeast 30th Street (4 nights: 11/17-11/20).
  • Barrier removal near bridge 5 (4 nights: 11/17-11/20).
  • Tree trimming between I-5 and Oakesdale Avenue Southwest (4 nights: 11/17-11/20).
  • Wall 3.30R work, roadway and drainage work between I-5 and North Southport Drive (4 nights: 11/17-11/20).
  • Paving at wall 5.45L and installing moment slab at wall 3.30L (4 nights: 11/17-11/20).

Project improvements will occur in the Renton to Bellevue area along I-405.

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Travelers on Interstate 405 between Renton and Bellevue experience one of the state’s worst commutes. The I-405/Renton to Bellevue Widening and Express Toll Lanes Project includes multimodal transportation improvements to offer more reliable travel choices and keep drivers, transit riders and freight moving.

Project highlights include:

  • A new southbound auxiliary lane in the I-90 to 112th Avenue Southeast vicinity.
  • Improvements at interchanges, including Northeast Park Drive and Northeast 44th Street in Renton, and 112th Avenue Southeast and Coal Creek Parkway in Bellevue.
  • Construction of portions of the King County Eastrail, including a 2.5-mile paved section and a new crossing over I-405 in downtown Bellevue at the site of the former Wilburton rail bridge (in partnership with King County).
  • New direct access ramp and inline transit station at NE 44th Street in Renton to help support BRT operations (in partnership with Sound Transit).