Downtown Seattle and SODO construction

Last update: 4:05 p.m. Friday, Jan. 17

This information changes frequently so please check back often. Travelers can also call 5-1-1 or for real-time traffic and weather updates. For city street closure information check with the Seattle Department of Transportation.

I-5

Express Lanes Schedule Changes

Highway: I-5    Region: Northwest    County: King    Location: Milepost(s) 165.29 - 172.43
ContactAngie Millar, Communications, 206-440-4457
Description: The I-5 express lanes are used 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:

  • Saturday, Jan. 11- The Northgate Way on-ramp to southbound I-5 Express Lanes will close to Sound Transit light rail construction.
  • Saturday, Jan. 11 -The northbound I-5 express lane off-ramp to Northgate Way will open at 7 p.m. for Sound Transit light rail construction.
  • Sunday, Jan. 2 to Thursday Jan. 21– The Pike Street express ramp to the northbound I-5 express lanes will be closed from 9 p.m. to 11 p.m. nightly.
  • Thursday, Jan. 23 - The Pike Street express ramp to the northbound I-5 express lanes will be closed from 9 p.m. to 11 p.m. nightly.
  • Sunday, Jan. 26 to Thursday Jan. 30- The Pike Street express ramp to the northbound I-5 express lanes will be closed from 9 p.m. to 11 p.m. nightly.

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: Ed Kane, Project Engineer, 425-225-8743
Description: WSDOT contractor crews are replacing 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:

  • Monday, Jan. 6, to the morning of Friday, Jan. 10 – All lanes of the northbound I-5 collector-distributor at I-90 will close from 11 p.m. to 4:30 a.m. nightly.
  • Saturday, Jan. 11, to the morning of Sunday, Jan. 12 – The three right lanes of northbound I-5 just north of the I-90 interchange and south of Union Street will close from 11 p.m. to 8 a.m.
  • Sunday, Jan. 12 to Friday Jan. 17- The Pike Street express ramp to the northbound I-5 express lanes will be closed from 9 p.m. to 4 a.m. nightly.
  • Tuesday, Jan. 21 to Friday Jan. 24- The Pike Street express ramp to the northbound I-5 express lanes will be closed from 9 p.m. to 4 a.m. nightly.

Sound Transit's East Link Extension - E130

Highway: I-5    RegionNorthwest    County: King    Location: Milepost(s) 164.00
ContactZack Ambrose, Sound Transit, 206-903-7176
Description: Sound Transit crews are constructing the East Link light rail extension from Seattle to Redmond.
Project webpage
Work schedule

  • Monday, Jan. 13, to the morning of Friday, Jan. 17 – All lanes of the southbound I-5 collector-distributor at I-90 will close from 9 p.m. to 5 a.m. nightly.
  • Tuesday, Jan. 21, to the morning of Friday, Jan. 24 – All lanes of the southbound I-5 collector-distributor at I-90 will close from 9 p.m. to 5 a.m. nightly.

Express Lanes Entrances Electronic Sign Replacement - #9272

Highway: I-5    Region: Northwest    County: King    Location: Milepost(s) 165.39 - 172.61
Contact: Ed Kane, Project Engineer, 425-225-8743
Description: WSDOT contractor crews are replacing the sign structures and brackets, along with the electrical and fiber optic systems at seven entrances to the I-5 express lanes. A few of the sign structures will also be redesigned to create a better viewing angle.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.

SR 99

King County Wastewater Treatment

Highway: SR 99   Region: Northwest    County: King    Location: Milepost(s) 27.17
Contact: Norm Mah, King County WTD, 206-263-0195
Description: Construction to install the conveyance pipes on South Michigan Street and East Marginal Way South continues through the end of the year.
Project details
Work schedule:

  • Until further notice - The on-ramp to southbound SR 99 at the corner of East Marginal Way South and South Michigan Street will be closed from 10 p.m. to 5 a.m. nightly (Monday through Thursday). Occasional Sunday closures from 8 p.m. to 5 a.m. are also possible.

SR 99 Tunnel Maintenance

Highway: SR 99    RegionNorthwest    County: King    Location: Milepost(s) 30.36 - 32.86
Contact: Angie Millar, Communications, 206-440-4457
Description: WSDOT maintenance crews are checking operational systems inside the SR 99 tunnel. 
Work schedule:

  • High impact: Friday, Jan. 24, to the morning of Saturday, Jan. 25 - The northbound SR 99 tunnel will close from 10 p.m. to 8 a.m.

Alaskan Way Viaduct Replacement Project - #9160

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 in downtown Seattle.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.

Alaskan Way Viaduct Demolition, Decommissioning & Surface Street Project - #9127

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 demolishing the Alaskan Way Viaduct in downtown Seattle. 
Project webpage
Work schedule:

  • Saturday, Jan. 18 - The intersection at 7th Avenue and Thomas Street will close from 7 a.m. to 3:30 p.m.
  • Monday, Jan. 20, to the afternoon of Friday, Jan. 24 - The right lane of eastbound Battery Street between 2nd and 3rd Avenue will close from 7 a.m. to 4 p.m. daily. 
  • Monday, Jan. 20, to the morning of Saturday, Jan. 25 - The right lane of Denny Way between 6th and 7th Avenue will close from 9 p.m. to 5 a.m. nightly. 

Roy St to N 145th St Paving & ADA Compliance - #9256

Highway: SR 99    Region: Northwest    County: King    Location: Milepost(s) 32.90 - 40.48
Contact: Mike Askarian, Project Engineer, 206-768-5861
Description: WSDOT contractor crews are grinding and repaving both directions of SR 99 between Roy Street and North 145th Street in Seattle. Dozens of curb ramps are also being rebuilt or added to provide better sidewalk connections for people of all abilities.
Project webpage
Work schedule:

  • Tuesday, Jan. 21, to the morning of Thursday, Jan. 23 - Two lanes of northbound SR 99 North 46th Street will close from 7 p.m. to 5 a.m. nightly. 

Aurora Bridge Painting (Stage 2) - #9168

Highway: SR 99    Region: Northwest    County: King    Location: Milepost(s) 34.17 - 34.73
Contact: Ed Kane, Project Engineer, 425-225-8743
Description: WSDOT contractor crews are cleaning and repainting the SR 99 Aurora Bridge. Crews are also grinding and repaving the driving surface of the bridge.
Project webpage
Work schedule: 

  • Tuesday, Jan. 21, to the morning of Friday, Jan. 24 - Northbound SR 99 at the Aurora bridge will be reduced to a single lane from 9 p.m. to 6 a.m. nightly. 
  • Tuesday, Jan. 21, to the morning of Friday, Jan. 24 - Southbound SR 99 at the Aurora bridge will be reduced to a single lane from 9 p.m. to 5 a.m. nightly. 
  • Tuesday, Jan. 21, to the morning of Friday, Jan. 24 - The Fremont Way on-ramp to southbound SR 99 will close from 9 p.m. to 5 a.m. nightly. 

SR 509

Highway: SR 509    RegionNorthwest    County: King    Location: Milepost(s) 29.59
Contact: Joseph Calabro, Communications, 206-440-4452
Description: WSDOT maintenance crews are making repairs to lighting on SR 509 at Cloverdale. 
Work schedule:

  • Saturday, Jan. 11, to the morning of Sunday, Jan. 12 - The southbound HOV lane of SR 509 between the 1st Avenue Bridge and Cloverdale Street will close from 10 p.m. to 8 a.m. 

Montlake Bridge to Lake Washington I/C & Bridge Replacement - #9015

Highway: SR 520    Region: Northwest    County: King    Location: Milepost(s) 0.29 - 3.00
Contact: SR 520 Bridge Replacement & HOV Program, 206-770-3554
Description: WSDOT contractor crews are making safety and mobility improvements on SR 520 between Lake Washington and I-5.
Project webpage
Work schedule:

  • Saturday, Jan. 4, to the morning of Sunday, Jan. 5 – The left lane of westbound SR 520 just east of Montlake Boulevard and east of Portage Bay will close from 8 p.m. to 5 a.m.
  • Monday, Jan. 6, to the morning of Friday, Jan. 10– The westbound SR 520 off-ramp to Montlake Boulevard will close from 10 p.m. to 6 a.m. nightly.
  • Monday, Jan. 6, to the morning of Friday, Jan. 10 – The left lane of westbound SR 520 just east of Lake Washington Boulevard and east of Portage Bay will close from 9 p.m. to 5 a.m. nightly.