King County construction

Last update: 2:25 p.m. Friday, April 19

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:

  • Monday, April 1, to the morning of Tuesday, April 2 - The left lane of the eastbound SR 516 on-ramp to eastbound SR 18 will be closed from 9 p.m. to 5 a.m. 
  • Monday, April 1, to the morning of Friday, April 5 - The left lane of eastbound SR 18 between Southeast 312th Way and Southeast 256th Street will be closed from 8 p.m. to 5 a.m. nightly. 
  • Saturday, April 6, to the morning of Sunday, April 7 - The left lane of eastbound SR 18 between Southeast 312th Way and Southeast 256th Street will be closed from 8 p.m. to 9 a.m.
  • Sunday, April 7, to the morning of Friday, April 12 - The left lane of eastbound SR 18 between Southeast 312th Way and Southeast 256th Street will be closed from 8 p.m. to 5 a.m. nightly. 
  • Saturday, April 13, to the morning of Sunday, April 14 - The left lane of eastbound SR 18 between Southeast 312th Way and Southeast 256th Street will be closed from 8 p.m. to 9 a.m.
  • Sunday, April 14, to the morning of Friday, April 19 - The left lane of eastbound SR 18 between Southeast 312th Way and Southeast 256th Street will be closed from 8 p.m. to 5 a.m. nightly. 

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:

  • Sunday, April 21, to the morning of Monday, April 22 - The right lane in both directions of SR 161 between the I-5 overpass and SR 99 will be closed from 9 p.m. to 5 a.m.
  • Tuesday, April 23, to the morning of Thursday, April 25 - The left lane of southbound SR 161 between the I-5 overpass and SR 99 will be closed from 9 p.m. to 5 a.m. nightly. 
  • Wednesday, April 24, to the morning of Thursday, April 25 - One lane of northbound SR 161 between the I-5 overpass and SR 99 close periodically from 9 p.m. to 5 a.m.

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.

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

  • Monday, April 22, to the morning of Friday, April 26 – Two lanes of northbound SR 167 between South 180th Street and I-405 will be closed nightly from 10 p.m. to 4:30 a.m.
  • Sunday, April 28, to the morning of Monday, April 29 – Two lanes of northbound SR 167 between South 180th Street and I-405 will be closed nightly from 10 p.m. to 4:30 a.m.
  • Monday, April 22, to the morning of Friday, April 26 – Two lanes of southbound SR 167 between I-405 and South 180th Street will be closed nightly from 10 p.m. to 5 a.m.

Ramp closures

  • Monday, April 22, to the morning of Friday, April 26 – The southbound SR 167 ramp to northbound I-405 will be closed nightly from 10 p.m. to 4:30 a.m. A signed detour will be in place.
  • Monday, April 22, to the morning of Friday, April 26 – The northbound I-405 ramp to northbound SR 167 will be closed nightly from 10 p.m. to 4:30 a.m. A signed detour will be in place.
  • Monday, April 22, to the morning of Thursday, April 26 – The northbound SR 167 HOV ramp to northbound I-405 will be closed nightly from 8 p.m. to 5 a.m. A signed detour will be in place.
  • Thursday, April 25, to the morning of Friday, April 26 – The northbound SR 167 general purpose ramp to northbound I-405 will be closed nightly from 10 p.m. to 4:30 a.m. A signed detour will be in place.
  • Saturday, April 27, to the morning of Sunday, April 28 – The northbound SR 167 general purpose ramp to northbound I-405 will be closed nightly from 8 p.m. to 10 a.m. Use flyover bridge as detour in place.
  • Saturday, April 27, to the morning of Sunday, April 28 – The southbound I-405 general purpose ramp to southbound SR 167 will be closed nightly from 11 p.m. to 4:30 a.m. A signed detour will be in place.

City street closures

  • Monday, April 15, to the afternoon of Friday, April 19 – One lane of southbound Talbot Road South between the northbound I-405 on-ramp and the southbound I-405 off-ramp will be closed from 4:30 a.m. to 3:30 p.m.
  • Wednesday, April 24, to the afternoon of Friday, April 26 – One lane of southbound Talbot Road South between the northbound I-405 on-ramp and the southbound I-405 off-ramp will be closed from 4:30 a.m. to 3:30 p.m.

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: 

  • Saturday, April 20, to the morning of Sunday, April 21 - One lane of northbound SR 181 in each direction between West Meeker Street and West James Street will be closed from 11 p.m. to 7 a.m.
  • Sunday, April 21, to the morning of Monday, April 22 - A single lane of southbound SR 181 between West James Street and West Meeker Street will be closed from 9 p.m. to 5 a.m.
  • Monday, April 22, to the morning of Thursday, April 25 – Northbound SR 181 between West Meeker Street and West James Street will be closed from 9 p.m. to 5 a.m. nightly. A signed detour will be in place. 
  • Thursday, April 25, to the morning of Friday, April 26 - Southbound SR 181 between West James Street and West Meeker Street will be closed from 9 p.m. to 5 a.m. A signed detour will be in place. 

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 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, April 22, to the morning of Friday, April 26 - The right lane of westbound SR 518 at I-5 will be closed from 10 p.m. to 5 a.m. nightly. 

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:   

  • Monday, April 15, to the afternoon of Friday, April 19 – One lane of southbound Talbot Road South between the northbound I-405 on-ramp and the southbound I-405 off-ramp will be closed from 4:30 a.m. to 3:30 p.m.
  • Wednesday, April 24, to the afternoon of Friday, April 26 – One lane of southbound Talbot Road South between the northbound I-405 on-ramp and the southbound I-405 off-ramp will be closed from 4:30 a.m. to 3:30 p.m.

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.