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Weekly update of construction closures in Downtown Seattle and SODO

Last update: 10:25 a.m. Monday, Dec. 4

This webpage contains information about WSDOT construction projects affecting vehicle or pedestrian traffic through downtown Seattle and SODO. If a highway is not listed below, there are no scheduled lane closures at this time, although emergency lane closures may still occur.

This information changes frequently so please check back often. Travelers can also call 5-1-1 or monitor @WSDOT_Traffic on Twitter for real-time traffic and weather updates.

City street closure information: Check with the Seattle Department of Transportation or monitor @SeattleDOT on Twitter.

| I-5 | I-90 | SR 99 | SR 513 | SR 520 | Traffic Impacts Calendar |

Express Lanes Schedule Changes

Highway: I-5    Region: Northwest    County: King    Location: Milepost(s) 165.29 - 172.43
Contact: Nicole Daniels, Communications, 206-440-4479
Description: WSDOT uses the I-5 express lanes to assist the flow of traffic during busy travel times. These lanes are scheduled to move in the direction that will relieve the most congestion from the transportation system.
Express lanes schedule
Work schedule:

  • Sunday, Dec. 10 - The I-5 express lanes will remain closed until 10:45 a.m. for the Jingle Bell Run. The lanes will open southbound after the closure.
  • Monday, Dec. 25 - The I-5 express lanes will operate on the weekend schedule for the Christmas holiday.
  • Sunday, Dec. 31, to the morning of Monday, Jan. 1 - The I-5 express lanes will remain open in the northbound direction during the overnight hours for the New Years Eve holiday. The lanes will open southbound at 8 a.m. Monday morning.
  • Monday, Jan. 1 - The I-5 express lanes will operate on the weekend schedule for the New Years holiday.
NB MLK Jr Way to NE Ravenna Br Pavement Repair - #8952

Highway: I-5    Region: Northwest    County: King    Location: Milepost(s) 157.44 - 170.28
Contact: Dave Lindberg, Project Engineer, 425-225-8725
Description: WSDOT contractor crews are replacing 37 expansion joints and large sections of concrete pavement on northbound I-5 between MLK Junior Way South/SR 900 in Tukwila and Northeast Ravenna Boulevard in Seattle.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.
Two-Way Transit and HOV Operations (Stage 3) - #8662

Highway: I-90    Region: Northwest    County: King    Location: Milepost(s) 2.48 9.28
Contact: Aleta Borschowa, Project Engineer, 206-768-5601
Description: WSDOT and Sound Transit contractor crews are adding HOV lanes to both directions of I-90 between Seattle and Bellevue and preparing the center roadway for East Link light rail.
Project webpage
Work schedule:

  • Thursday, Dec. 7, to the morning of Friday, Dec. 8 - The left lane of westbound I-90 inside the Mercer Island Lid tunnel will be closed from 9 p.m. to 2 a.m.
Seattle Sign Maintenance Work

Highway: I-90    Region: Northwest    County: King    Location: Milepost(s) 2.54
Contact: Nicole Daniels, Communications, 206-440-4479
Description: WSDOT maintenance crews are performing sign work on the westbound I-90 off-ramp to southbound I-5 in Seattle.
Work schedule:

  • **HIGH IMPACT** Friday, Dec. 8, to the morning of Saturday, Dec. 9 - The westbound I-90 off-ramp to southbound I-5 will be closed from 11:59 p.m. to 5 a.m.
Alaskan Way Viaduct Replacement Project

Highway: SR 99    RegionNorthwest    County: King    Location: Milepost(s) 30.36 - 32.86
Contact: Laura Newborn, Communications, 206-805-2871
Description: WSDOT contractor crews are building a new SR 99 tunnel through downtown Seattle.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.

West Approach Bridge North - #8625

Highway: SR 513    Region: Northwest    County: King    Location: Milepost(s) 0.00
Contact: Steve Strand Project Engineer, 206-770-3565
Description: The West Approach Bridge North Project is the latest phase of construction of the SR 520 Bridge Replacement and HOV Program and will extend SR 520's three westbound lanes from the new floating bridge to the Montlake area in Seattle.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.
West Approach Bridge North - #8625

Highway: SR 520    Region: Northwest    County: King    Location: Milepost(s) 0.88 – 3.04
Contact: Steve Strand, Project Engineer, 206-770-3565
Description: The West Approach Bridge North Project is the latest phase of construction of the SR 520 Bridge Replacement and HOV Program and will extend SR 520's three westbound lanes from the new floating bridge to the Montlake area in Seattle.
Project webpage
Work schedule:

  • Monday, Dec. 4, to the morning of Friday, Dec. 8 - A single lane in both directions of SR 520 between the floating bridge and Montlake Boulevard will be closed from 11 p.m. to 5 a.m. nightly.
  • Monday, Dec. 4, to the morning of Friday, Dec. 8 - A single lane of the westbound SR 520 off-ramp to Montlake Boulevard will be closed from 9 a.m. to 3 p.m. daily.

Plan ahead by checking for major traffic impacts on all state highways.