Skip Top Navigation

NW Region Map

Click here for construction info in your area Snohomish CountyKing CountyWhatcom, Island and Skagit Counties

Special Events

Curious about a special event and how your commute may be affected? Visit our special events website for more information.

Get Connected

  • Sign up for email updates to get the latest news on highway projects that affect you.
  • Is this webpage helpful to you?

I-405 - Construction Updates

Last update: 9:20 a.m. Tuesday, Dec. 6

This information changes frequently. Please check back often. Travelers can also call 5-1-1 for real-time traffic and weather updates.

If you have questions or comments about I-405 in Washington state that are not addressed by these resources, please contact the I-405 Project Office at 425-456-8585.

I-405

SB S 320th St to Duwamish River Br Concrete Pavement Rehab - #8816

Highway: I-405    Region: Northwest    County: King    Location: Milepost(s) 0.00
Contact: Mike Askarian, Project Engineer, 206-768-5861
Description: WSDOT contractor crews are rehabilitating southbound I-5 between the Duwamish River Bridge in Tukwila and South 320th Street in Federal Way.
Project website
Work schedule:

  • No lane or ramp closures are scheduled.
I-405/SR 167 Interchange Direct Connector - #8811

Highway: I-405    Region: Northwest    County: King    Location: Milepost(s) 2.32 – 3.96
Contact: Anne Broache, Communications, 425-450-2729
Description: WSDOT contractor crews are building a new flyover ramp connecting the HOT lanes on SR 167 to the carpool lanes on I-405 in Renton. This ramp will improve traffic flow and safety at this critical interchange.
Project website
Work schedule:

  • Monday, Dec. 5, to the morning of Friday, Dec. 9 – One right lane of northbound SR 167 between South 43rd Street and I-405 will be closed from 9 p.m. to 4:30 a.m.
  • Tuesday, Dec. 6, to the morning of Friday, Dec. 9 – One left lane of northbound I-405 between SR 167 and North 4th Street will be closed from 9 p.m. to 4:30 a.m.
  • Tuesday, Dec. 6, to the morning of Friday, Dec. 9 – One left lane of northbound SR 167 between South 43rd Street and I-405 will be closed from 9 p.m. to 4:30 a.m.
  • Tuesday, Dec. 6, to the morning of Friday, Dec. 9 – One left lane of southbound SR 167 between I-405 and South 43rd Street will be closed from 9 p.m. to 4:30 a.m.
I-405 NE 30th St & 44th St Ramp Improvements - #8959

Highway: I-405    Region: Northwest    County: King    Location: Milepost(s) 6.40– 8.45
Contact: Mike Askarian, Project Engineer, 206-768-5681
Description: WSDOT contractor crews are widening two northbound I-405 ramps in north Renton at Northeast 30th Street and Northeast 44th Street.
Project website
Work schedule:

  • Until further notice - A single lane of the Northeast 30th Street on-ramp to northbound I-405 will be closed from 10 a.m. to 4 p.m. daily, Monday through Friday.
NE 6th Street to I-5 Widening and Express Toll Lanes - #8204

Highway: I-405    Region: Northwest    County: King    Location: Milepost(s) 13.68 - 30.30
Contact: Anne Broache, Communications, 425-450-2729
Description: WSDOT contractor crews are building an express toll lane system from downtown Bellevue to Lynnwood.
Project website

The Washington State Department of Transportation is a public agency and is subject to the State of Washington's Public Records Act (RCW 42.56). Therefore, public comments and questions may be made available to anyone requesting them for non-commercial purposes.

BLT map

Work schedule:

RAMP CLOSURES

Bellevue area

  • No scheduled ramp closures.

Kirkland area

  • No scheduled ramp closures.

Bothell/Lynnwood area

  • No scheduled ramp closures.

LANE CLOSURES

Bellevue area

  • No scheduled lane closures.

Kirkland area

  • No scheduled lane closures.

Bothell/Lynnwood area

  • No scheduled lane closures.