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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.

Week of Oct. 5 – Oct. 11

Impactful work adjacent to I-405:

  • All lanes of northbound SR 181 over I-405 will be fully closed day and night (10/5-10/12)
  • Sign structure work near South 43rd Street (4 nights: 10/6-10/9).
  • Rebar delivery on Southeast Eighth Street (4 nights: 10/6-10/9).
  • Utility work near Sunset Boulevard Northeast (4 nights: 10/6-10/9).
  • Sign structure work near 114th Avenue Southeast (4 nights: 10/6-10/9).
  • Vault work near Seahawks Way (4 nights: 10/6-10/9).
  • Vault work near 120th Avenue Southeast (4 nights: 10/6-10/9).
  • Bridge 11 investigation near SR 181 (4 nights: 10/6-10/9).
  • Falsework removal near North Southport Drive (4 nights: 10/6-10/9).
  • Utility work near Sunset Boulevard Northeast (1 night: 10/6).

City of Bellevue:

  • Installing temporary illumination for light post extensions 181 & 183 (1 nights: 10/10).
  • Installing utility extensions near Coal Creek Parkway Southeast (4 nights: 10/6-10/9).
  • Installing pier cap bolsters for piers 2 and 3 at Bridge 41E near Southeast Eighth Street (4 nights: 10/6-10/9).
  • Barrier work and fiber survey on I-405 between Southeast Eighth Street and Northeast Fourth / Eighth Street (1 night: 10/9).
  • Barrier work on northbound I-405 near Northeast Fourth Street and Northeast Eighth Street (1 night: 10/9).
  • Barrier work on the I-405 northbound on-ramp from Southeast Eighth Street (1 night: 10/9).
  • Barrier and sign structure work near Coal Creek Parkway Southeast and Northeast Sixth Street (3 nights: 10/6-10/9).
  • Barrier work near Northeast Sixth Street (4 nights: 10/6-10/9).
  • Barrier work between Northeast 70th Place and milepost 11 (1 night: 10/9).
  • Sign structure work on the I-405 southbound on-ramp from Southeast Eighth Street (3 nights: 10/6-10/8).
  • Fiber survey work between Southeast Eighth Street and I-90 (3 nights: 10/6-10/8).
  • Fiber investigation work near I-90 (3 nights: 10/7-10/9).
  • Survey, paving, and drainage work between Coal Creek Parkway Southeast and May Creek (3 nights: 10/7-10/9).
  • Survey, drainage, and boring work near Coal Creek Parkway Southeast and Southeast Eighth Street (1 night: 10/6).
  • Drainage work near 112th Avenue Southeast (4 nights: 10/6-10/9).
  • Barrier work near SR 900 / Park Avenue North (3 nights: 10/6-10/8).
  • Drainage, rat slab, and barrier work near walls 3.30L, 4.52L, and 5.30L (4 nights: 10/6-10/9).
  • Cleanup and maintenance work near SR-181 / West Valley Highway (4 nights: 10/6-10/9).
  • Full closure of southbound I-405 between Coal Creek Parkway Southeast on-ramp and Northeast 30th Street off-ramp (10/10-10/12).

City of Newcastle:

  • None planned.

City of Renton:

  • Installing moment slab and barrier at wall 3.30L (5 nights: 10/6-10/10).
  • Installing drainage and barrier and grading work for wall 3.30R (4 nights: 10/6-10/9).
  • Grading and demo work for wall 3.30R (5 nights: 10/6-10/10).
  • Installing drainage south of wall 5.07R (4 nights: 10/6-10/9).
  • Slope grading for the 7.90RA walls and noise wall 10 (5 nights: 10/6-10/10).
  • Sign structure work on the I-405 northbound to SR 169 off-ramp (1 night: 10/9).
  • Sign structure work on the northbound I-405 on-ramp from Sunset Boulevard North (4 nights: 10/6-10/9).
  • Paving on northbound I-405 to the Northeast 30th Street off-ramp (1 night: 10/9).
  • Sign structure work near walls 6.50R and 7.90 (4 nights: 10/6-10/9).

Week of Oct. 12 – Oct. 18

Impactful work adjacent to I-405:

  • The northbound SR 181 left turn lane to Southcenter Boulevard will be closed day and night (10/12-10/19).

City of Bellevue:

  • None planned.

City of Newcastle:

  • None planned.

City of Renton:

  • Moment slab and barrier installation for wall 3.30L (5 nights: 10/13-10/17).
  • Drainage and barrier installation for wall 3.30R (4 nights: 10/13-10/16).
  • Grading and demolition work for wall 3.30R (5 nights: 10/13-10/17).
  • Drainage, rat slab, and barrier installation for walls 3.30L, 4.52L, and 5.30L (4 nights: 10/13-10/16).

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).