King County construction

Last update: 3:25 p.m. Friday, March 22

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

If a highway is not listed below, there are no scheduled lane closures at this time, although emergency lane closures may still occur.

SR 18

EB Soosette Creek to Holder Creek Paving & Deck Overlay - #9345

Highway: SR 18    Region: Northwest    County: King    Location: Milepost(s) 8.90 - 20.42
Contact: Mike Askarian, Project Engineer, 206-768-5861
Description: WSDOT contractor crews are repaving eastbound SR 18 between Southeast 304th Street in Auburn and Southeast 256th Street in Covington. Crews are also resurfacing the westbound SR 18 overpass at Issaquah-Hobart Road.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.

SR 99

Pierce County Line to S 359th St Vic Paving - #9397

Highway: SR 99    Region: Northwest    County: King    Location: Milepost(s) 6.15 - 7.46
Contact: Aleta Borschowa, Project Engineer, 206-768-5601
Description: WSDOT contractor crews are grinding and repaving both directions of SR 99 between the Pierce County line and South 359th Street in Federal Way.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.

Downtown Seattle/SODO Construction Closures

Highway: SR 99    Region: Northwest    County: King    Location: Milepost(s) 29.00 - 34.30
Description: There are several projects affecting vehicle and pedestrian traffic on SR 99 and city streets through downtown Seattle and SODO.
Work schedule:

 SR 161 

Millton Rd Vic to SR 18 Paving & ADA Compliance - #9350

Highway: SR 161    Region: Northwest    County: King    Location: Milepost(s) 35.32 - 36-25
Contact: Mike Askarian, Project Engineer, 206-768-5861
Description: WSDOT contractor crews are grinding and repaving both directions of SR 161 between Milton Road South and SR 18 in Federal Way. Crews will also assess the transitions from sidewalks to crosswalks, known as curb ramps, and upgrade them when necessary to provide better sidewalk connections for people of all abilities.
Project webpage
Work schedule:

  • Monday, March 25, to the morning of Friday, March 29 - The right lane in both directions of SR 161 between the I-5 overpass and SR 99 be closed from 9 p.m. to 5 a.m. nightly.   

SR 167 

City of Kent - S 224th Street Improvement Project

Highway: SR 167    Region: Northwest    County: King    Location: Milepost(s) 21.39 - 21.73
Contact: Matthew Scarsella, City of Kent Project Engineer, 253-872-6750
Description: City of Kent contractor crews are widening 88th Avenue South/South 218th Street to a three-lane roadway.
Project webpage
Work schedule:

  • Wednesday, March 13, to the morning of Thursday, March 14 - Up to two left lanes of southbound SR 167 at 84th Avenue South/Central will be closed from 10 p.m. to 6 a.m.
  • Thursday, March 14, to the morning of Friday, March 15 - The right lane of southbound SR 167 at 84th Avenue South/Central will be closed from 10 p.m. to 5 a.m.

City of Kent - S 212th Way Overlay Project

Highway: SR 167    Region: Northwest    County: King    Location: Milepost(s) 22.40
Contact: Joseph Aracuto, City of Kent Project Engineer, 253-856-5664
Description: City of Kent contractor crews are grinding out deteriorated pavement and installing fresh hot-mixed asphalt on a section of S 212th Way between the east end of the SR 167 overpass and 96th Way.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.

I-405/SR 167 Interchange Direct Connector - #8811

Highway: SR 167    Region: Northwest    County: King    Location: Milepost(s) 24.80 - 26.26
Contact: Craig Smiley, Communications, 425-456-8624
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.
Project webpage
Work schedule:

Lane closures

  • No lane closures are scheduled.

Ramp closures

  • No ramp closures are scheduled.

City street closures

  • No city street closures are scheduled. 

SR 181

SR 516 to W James St. Paving & ADA Compliance - #9355

Highway: SR 181    Region: Northwest    County: King    Location: Milepost(s) 5.32 - 5.89
Contact: Evelyn Pao, Project Engineer, 206-440-4981
Description: WSDOT contractor crews will repair and pave about a half mile of SR 181 between SR 516 and West James Street. Crews will also add pedestrian curb ramps.
Work schedule: 

  • Sunday, March 24, to the morning of Tuesday, March 26 - Northbound and southbound lane closures at the intersection of SR 516/SR 181 and the intersection of SR 181/Meeker Street from 9 p.m. to 5 a.m. nightly. Lane closures will not affect both directions at the same time.
  • Monday, March 25, to the afternoon of Wednesday, March 27 - The right lane of northbound SR 181 between SR 516 and South 238th Street will be closed from 9 a.m. to 3 p.m. daily. 
  •  Wednesday, March 27, to the afternoon of Thursday, March 28 - The right lane of southbound SR 181 between SR 516 and South 238th Street will be closed from 9 a.m. to 3 p.m. daily. 
  • Tuesday, March 26, to the morning of Friday, March 29 - The right lane of northbound SR 181 between SR 516 and South 238th Street will be closed from 9 p.m. to 5 a.m. nightly. 
  • Thursday, March 28, to the afternoon of Friday, March 29 - The right lane of northbound SR 181 between SR 516 and South 238th Street will be closed from 9 a.m. to 3 p.m. daily. 

SR 202

Little Bear Creek Fish Barrier Removal - #8865

Highway: SR 202    Region: Northwest    County: King    Location: Milepost(s) 0.12 - 0.18
Contact: Ed Kane, Project Engineer, 425-225-8743
Description: WSDOT contractor crews are building a buried bridge under SR 202 over Little Bear Creek in Woodinville and removing the existing culvert under the roadway.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.

Evans & Patterson Creek Fish Passage - #9269

Highway: SR 202    Region: Northwest    County: King    Location: Milepost(s) 11.74 - 19.78
Contact: Mike Askarian, Project Engineer, 206-768-5861
Description: WSDOT contractor crews are replacing four culverts that pass under SR 202 between Redmond and Fall City. 
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.

SR 203

Langlois Creek Fish Passage - #9192

Highway: SR 203    Region: Northwest    County: King    Location: Milepost(s) 4.88 - 4.96
Contact: Ed Kane, Project Engineer, 425-225-8743
Description: WSDOT contractor crews are replacing the existing narrow round culvert channeling Langlois Creek with a large box culvert.
Project webpage
Work schedule: 

  • No lane or ramp closures are scheduled.

SR 509

S 192nd St to Normandy Pk & SR 509 to SR 99 Paving & ADA & Deck & Seismic - #9357

Highway: SR 509    Region: Northwest    County: King    Location: Milepost(s) 22.38 - 22.97
Contact: Aleta Borschowa, Project Engineer, 206-768-5601
Description: WSDOT contractor crews are repaving both directions of SR 509 between South 192nd Street and South Normandy Road in Normandy Park/Burien. Crews are also upgrading select curb ramps between Criminal Justice College and Southwest 185th Street in order to create better sidewalk connections for people of all abilities.
Project webpage
Work schedule:

  • Monday, March 25, to the morning of Tuesday, March 26 - The HOV lane of the southbound I-405 ramp to northbound I-5 will be closed from 9 p.m. to 5 a.m. 
  • Monday, March 25, to the morning of Tuesday, March 26 - The left lane of northbound I-5 between SR 516 and South 144th Street will be closed from 10 p.m. to 5 a.m. 

S Cloverdale St to Duwamish River Paving & ADA Compliance - #9239

Highway: SR 509    Region: Northwest    County: King    Location: Milepost(s) 27.85 - 29.92
Contact: Aleta Borschowa, Project Engineer, 206-768-5601
Description: WSDOT contractor crews are repaving both directions of SR 509 between South 112th Street and the Duwamish River . Crews are also upgrading select curb ramps in order to create better sidewalk connections for people of all abilities.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.

SR 515

I-405/SR 167 Interchange Direct Connector - #8811

Highway: SR 515    Region: Northwest    County: King    Location: Milepost(s) 6.93
Contact: Craig Smiley, Communications, 425-456-8624
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 webpage
Work schedule:   

  • No lane or ramp closures are scheduled.

SR 518

S 192nd St to Normandy Pk & SR 509 to SR 99 Paving & ADA & Deck & Seismic - #9357

Highway: SR 518    Region: Northwest    County: King    Location: Milepost(s) 0.00 - 3.81
Contact: Aleta Borschowa, Project Engineer, 206-768-5601
Description: WSDOT contractor crews are repaving both directions of SR 518 between South 154th Street in SeaTac and SR 509 in Burien. Crews are also seismically retrofitting two bridges on SR 518 and one bridge at the I-405/I-5 interchange.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.

SR 599

SB S 133rd St & 124th St Vic VMS Replacement - #9299 

Highway: SR 599    Region: Northwest    County: King    Location: Milepost(s) 0.28 - 1.18
Contact: Mike Askarian, Project Engineer, 206-768-5861
Description: WSDOT contractor crews are replacing overhead VMS signs on SR 599 in Tukwila.
Work schedule:

  • No lane or ramp closures are scheduled.