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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 – 2027
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 Dec. 14 – 20

Impactful work adjacent to I-405: 

  • Installing cabinet pad and sign structure on northbound SR 167 between South 43rd Avenue and I-405 (4 nights: 12/15-12/18).
  • Installing cabinet pad at the northbound I-405 HOV on-ramp near SR 167(4 nights: 12/15-12/18).
  • Installing cabinet pad and sign structure on southbound SR 167 between South 43rd Avenue and I-405 (4 nights: 12/15-12/18).
  • Installing cabinet pad and sign structure at the southbound I-405 HOV on-ramp near SR 167 (4 nights: 12/15-12/18). 
  • Performing Bridge 11 investigation along SR 181 (4 nights: 12/15-12/18). 

City of Bellevue: 

  • Installing cabinet pad, fiber proofing, and sign structure on northbound I-405 between Southeast Eighth Street and Northeast Fourth/Eighth Street (4 nights: 12/15-12/18).
  • Repairing fiber optic lines on northbound I-405 between Southeast Eighth Street and Northeast Fourth/Eighth Street (6 nights: 12/15-12/20).
  • Proofing fiber optic lines on northbound I-405 near the Northeast Eighth Street off-ramp (4 nights: 12/15-12/18).
  • Installing barrier on northbound I-405 near the HOV Northeast Sixth Street off-ramp (1 night: 12/19).
  • Installing sign structure between Main Street and Northeast Fourth Street (4 nights: 12/15-12/18).
  • Installing barrier and fiber proofing on southbound I-405 between Southeast Eighth Street and I-90 (4 nights: 12/15-12/18).
  • Installing barrier on southbound I-405 near the westbound I-90 off-ramp (5 nights: 12/15-12/19).  
  • Installing barrier and sign structures on southbound I-405 between Southeast Eighth Street and I-90 (1 night: 12/19).
  • Performing heavy construction work along westbound Coal Creek Parkway Southeast (2 nights: 12/15-12/16).
  • Performing rebar delivery along eastbound Southeast Eighth Street near I-405 (4 nights: 12/15-12/18). 

City of Newcastle

  • Installing sign structure near wall 7.90 (4 nights: 12/15-12/18). 

City of Renton:

  • Installing cast-in-place barrier on I-405 near Northeast Sunset Boulevard (4 nights: 12/15-12/18).
  • Grading barrier on northbound I-405 near the Northeast 30th street off-ramp (1 night: 12/15).  
  • Forming, pouring, and stripping barrier on northbound I-405 the Northeast 30th Street off-ramp (5 nights: 12/15-12/19).
  • Installing Cast-in-place barrier on northbound I-405 near Exit 6 (4 nights: 12/15-12/18).
  • Demolishing pavement, installing barrier underdrain, and grading barrier on northbound I-405 near the Northeast 30th Street off-ramp (5 nights: 12/15-12/19).
  • Highway maintenance along northbound I-405 between I-5 and SR 181 (4 nights: 12/15-1218).
  • Installing sign and toll structure and bores on northbound I-405 between SR 181 and SR 169 (4 nights: 12/15-12/18).
  • Installing drainage near wall 3.30R (2 nights: 12/19-12/20).
  • Installing drainage and sign structure on I-405 near SR 169 (2 nights: 12/19-12/20).
  • Installing bores and sign structure on northbound I-405 near the Sunset Boulevard North off-ramp (4 nights: 12/15-12/18).
  • Installing bores and sign structure on southbound I-405 between SR 167 and Sunset Boulevard North (4 nights: 12/15-12/18).
  • Installing signs and barriers on northbound I-405 near the Northeast 30th Street on-ramp (4 nights: 12/15-12/18).
  • Backfilling on southbound I-405 near the North Southport Drive off-ramp (4 nights: 12/15-12/18).
  • Installing moment slab and paving near wall 3.30L (1 night: 12/19). 

Week of Dec. 21 – 27

Impactful work adjacent to I-405: 

  • None planned. 

City of Bellevue: 

  • None planned. 

City of Newcastle:

  • None planned. 

City of Renton:

  • Installing cast-in-place barrier on I-405 near Northeast Sunset Boulevard (4 nights: 12/22-12/25).
  • Forming, pouring, and stripping barrier on northbound I-405 near the Northeast 30th Street off-ramp (1 night: 12/22).
  • Paving back barrier trench on northbound I-405 near the Northeast 30th Street off-ramp (2 nights: 12/23-12/24).
  • Installing cast-in-place barrier on northbound I-405 near Exit 6 (2 nights: 12/22-12/23).
  • Forming, pouring, and grading and stripping barrier,  on northbound I-405 near the Northeast 30th Street off-ramp (3 nights: 12/22-12/24).

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).