King County construction

Last update: 7 a.m. Wednesday, June 26

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:

  • High Impact - Beginning Monday, May 13 - A single lane of westbound SR 18 at Issaquah-Hobart Road will be closed around-the-clock for approximately 65 days beginning at 5 a.m.
  • Saturday, June 15, to the morning of Friday, June 21 - The left lane of eastbound SR 18 between Southeast 312th Way and Southeast 256th Street will close from 8 p.m. to 9 a.m. nightly. 
  • Saturday, June 22, to the morning of Friday, June 28 - The left lane of eastbound SR 18 between Southeast 312th Way and Southeast 256th Street will close from 8 p.m. to 5 a.m. nightly. 
  • Saturday, June 22, to the morning of Sunday, June 23 - The 304th Street on-ramp to eastbound SR 18 will close from 9 p.m. to 5 a.m. 
  • Sunday, June 23, to the morning of Monday, June 24 - The eastbound SR 18 ramp to SR 516 will close from 9 p.m. to 5 a.m. 
  • Monday, June 24, to the morning of Tuesday, June 25 - The eastbound SR 18 ramp to SR 516 will close from 9 p.m. to 5 a.m. 
  • Tuesday, June 25, to the morning of Wednesday, June 26 - The 304th Street on-ramp to eastbound SR 18 will close from 9 p.m. to 5 a.m. 
  • Wednesday, June 26, to the morning of Thursday, June 27 - The eastbound SR 18 ramp to SR 516 will close from 9 p.m. to 5 a.m. 
  • Thursday, June 27, to the morning of Friday, June 28 - The eastbound SR 18 ramp to SR 516 will close from 9 p.m. to 5 a.m. 

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 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 104

Lake Forest Park Maintenance

Highway: SR 104   Region: Northwest    County: King    Location: Milepost(s) 30.58 - 32.00
Contact: Joseph Calabro, communications, 206-440-4452
Description: WSDOT maintenance crews are repairing pavement on SR 104 near Lake Forest Park.  
Work schedule:

  • Monday, June 24, to Friday, June 28 - Flaggers will alternate traffic on SR 104 between Northeast 195th Street/25th Avenue and SR 522 from 9 a.m. to 3 p.m. daily. 

 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, June 24, to the morning of Friday, June 28 - One lane in each direction of SR 161 between Milton Road and SR 18 will close 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:

  • High Impact: Friday, June 21 - Southbound SR 167 between South 212th Street and 84th Avenue South will fully close from 1 to 4:30 a.m. A signed detour will be in place. 

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, June 24, to the morning of Tuesday, June 25 – Two lanes of northbound SR 167 between South 180th Street and I-405 will be closed nightly from 11 p.m. to 4:30 a.m. All traffic will be detoured to the northbound I-405 ramp.
  • Monday, June 24, to the morning of Friday, June 28 – 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.
  • Tuesday, June 25, to the morning of Friday, June 28 – 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.

Ramp closures

  • Monday, June 24, to the morning of Thursday, June 27 – The northbound I-405 ramp to southbound SR 167 will be closed nightly from 10 p.m. to 4:30 a.m. A signed detour will be in place.
  • Monday, June 24, to the morning of Wednesday, June 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.
  • Monday, June 24, to the morning of Wednesday, June 26 – The southbound I-405 HOV ramp to southbound SR 167 will be closed nightly from 8 p.m. to 5 a.m. A signed detour will be in place.
  • Monday, June 24, to the morning of Friday, June 28 – The southbound SR 167 off-ramp to Southwest 41st Street will be closed from 10 p.m. to 4:30 a.m. A signed detour will be in place.
  • Wednesday, June 26, to the morning of Friday, June 28 – 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.
  • Wednesday, June 26, to the morning of Friday, June 28 – The South 180th Street on-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.
  • Wednesday, June 26, to the morning of Friday, June 28 – The southbound I-405 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.
  • Thursday, June 27, to the morning of Friday, June 28 – 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.

City street closures

  • Monday, June 24, to the afternoon of Friday, June 28 – One lane of northbound East Valley Road between Southwest 19th Street and Taylor Avenue Southwest will be closed from 8 a.m. to 3:30 p.m.
  • Wednesday, June 26, to the morning of Friday, June 28 Talbot Road South between the northbound I-405 on-ramp and the southbound I-405 off-ramp will be fully closed from 10 p.m. to 4:30 a.m. Detours will be provided for both the southbound and northbound directions of Talbot Road South.

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:  

  • No scheduled lane or ramp closures. 

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.

City of Woodinville Sammamish Bridge Replacement

Highway: SR 202    Region: Northwest    County: King    Location: Milepost(s) 0.31 - 0.55
Contact: Joseph Calabro, Communications, 206-440-4452
Description: Contractor crews working for the city of Woodinville will widen SR 202 (NE 175th St.) from the intersection of 131st Avenue NE to Woodinville-Redmond Road.
Work schedule:

  • Monday, July 1, to the morning of Wednesday, July 3 - SR 202/NE 175th Street between 131st Ave NE and Woodinville-Redmond Road will fully close from 8 p.m. to 5 a.m. nightly. A signed detour will be in place. 

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:

  • No lane or ramp closures scheduled. 

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:   

  • Wednesday, June 26, to the morning of Friday, June 28 Talbot Road South between the northbound I-405 on-ramp and the southbound I-405 off-ramp will be fully closed from 10 p.m. to 4:30 a.m. Detours will be provided for both the southbound and northbound directions of Talbot Road South.

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:

  • High impact: Monday, June 24, to the morning of Tuesday, June 25 - The eastbound SR 518 ramp to northbound I-5 will close from 10 p.m. to 5 a.m.
  • Monday, June 24, to the morning of Tuesday, June 25 -The right lane of southbound I-5 between South 144th Street and SR 518 will close from 8 p.m. to 5 a.m. 
  • Monday, June 24, to the morning of Wednesday, June 26 - A single lane of northbound SR 509 near Southwest Normandy Park will close from 8 p.m. to 5 a.m. nightly. 
  • Wednesday, June 26, to the morning of Friday, June 28 - A single lane of northbound 42nd Avenue below SR 518 will close from 7 a.m. to 6 p.m. daily. 
  • Wednesday, June 26, to the morning of Friday, June 28 - A single lane of southbound SR 509 near Southwest Normandy Park will close from 8 p.m. to 5 a.m. nightly. 

SR 522

City of Bothell Project - Stage 3

Highway: SR 522    Region: Northwest    County: King    Location: Milepost(s) 8.15 - 9.10
Contact: Kevin Stoll, Project Engineer, 425-806-6825
Description: This project is a continuation of the SR 522 Stage 1 and Stage 2 improvements. It will provide road improvements and business access and transit (BAT) lanes from the end of Stage 1 and 2 improvements to 83rd Place NE (the new western City limits). This stage of the project is part of the Sound Transit SR 522/NE 145th Bus Rapid Transit (BRT) project that will widen the existing lanes of SR 522 and create Business Access and Transit (BAT) lanes in both directions. Additionally, this project will add a sidewalk on the north side, install center medians and street lights, and relocate utilities underground.
Project webpage
Work schedule:

  • Monday, June 24, to the afternoon of Friday, June 28 - The right lane of westbound SR 522 between 91st Avenue Northeast and 83rd Place Northeast will close from 9 a.m. to 3 p.m. daily. 

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:

  • Tuesday, June 18 - The right lane of southbound SR 599 at Tukwila International Boulevard will close from 4 a.m. to 1 p.m.
  • Wednesday, June 19 and Thursday, June 20 - The right lane of southbound SR 599 between Tukwila International Boulevard and East Marginal Way will close from 2 a.m. to 1 p.m. daily.