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King County Construction

Last update: 1:50 p.m. Friday, Sept. 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 | SR 99 | SR 167 | SR 169 SR 202 | SR 203 | SR 509 | SR 513SR 515 | SR 516SR 518 | SR 900 |

8th to 277th Southbound HOT Lane - #8665

Highway: SR 18    Region: Northwest    County: King    Location: Milepost(s) 2.88
Contacts: Sharif Shaklawun, Project Engineer, 206-949-3850, and Craig Smiley, Communications, 425-456-8639
Description: This project will widen SR 167 to add a lane in the southbound direction from Kent to Auburn and extend the existing High Occupancy Toll (HOT) Lanes system south on SR 167 in the Green River Valley.
Project website
Work schedule:

LANE CLOSURES

  • No lane closures are scheduled.

RAMP CLOSURES

  • No ramp closures are scheduled.
Auburn Bridge Inspection Work

Highway: SR 18    RegionNorthwest    County: King    Location: Milepost(s): 3.82
Contact: Ally Barrera, Communications, 206-440-4457
Description: WSDOT bridge maintenance crews will perform a bridge inspection on eastbound State Route 18 in Auburn.
Work schedule:

  • Saturday, Sept. 30 – The right lane of eastbound State Route 18 at C Street Southwest will be closed from 6 to 6:45 a.m.
1st Ave S Bridge Deck Repair Work

Highway: SR 99 Region: Northwest County: King Location: Milepost(s) 20.50 - 20.60
Contact: Ally Barrera, communications, 206-440-4457
Description: WSDOT bridge maintenance crews will perform bridge deck repair work on the 1st Avenue South Bridge in Seattle
Work schedule:

  • Saturday, Sept. 23 - The two right lanes of northbound State Route 99 at the 1st Avenue South Bridge will be closed from 6:30 to 11 a.m.
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:

8th to 277th Southbound HOT Lane - #8665

Highway: SR 167    Region: Northwest    County: King    Location: Milepost(s) 10.48 – 18.24
Contacts: Sharif Shaklawun, Project Engineer, 206-949-3850, and Craig Smiley, Communications, 425-456-8639
Description: This project will widen SR 167 to add a lane in the southbound direction from Kent to Auburn and extend the existing High Occupancy Toll (HOT) Lanes system south on SR 167 in the Green River Valley.
Project website
Work schedule:

RAMP CLOSURES

  • No ramp closures are scheduled.

LANE CLOSURES

  • Wednesday, Sept. 27 to the morning of Friday, Sept. 29 – There will be a mobile single lane closure on both southbound and northbound SR 167 between South 277th Street and 8th Street East nightly from 10 p.m. to 4 a.m.

CITY STREET CLOSURES

  • Monday, Sept. 25 to Wednesday, Sept. 27 – The right lane of westbound 15th Street Northwest will be closed between M Street and SR 167 daily from 9:30 a.m. to 2:30 p.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. This ramp will improve traffic flow and safety at this critical interchange.
Project website
Work schedule:

RAMP CLOSURES

  • * Monday, Sept. 18, to the morning of Sunday, Sept. 24 – The southbound SR 167 off-ramp to South 212th Street will be closed nightly from 10 p.m. to 5 a.m. A signed detour will be in place.
  • * Monday, Sept. 18, to the morning of Sunday, Sept. 24 – The South 212th Street on-ramp to southbound SR 167 will be closed nightly from 10 p.m. to 5 a.m. A signed detour will be in place.
  • * Monday, Sept. 25, to the morning of Sunday, Oct. 1 – The southbound SR 167 off-ramp to South 84th Street will be closed nightly from 10 p.m. to 5 a.m. A signed detour will be in place.
  • * Monday, Sept. 25, to the morning of Friday, Sept. 29 – The northbound 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, Sept. 25, to the morning of Friday, Sept. 29 – 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.

*Please note that not all the listed ramps will be closed at the same time. Select ramps will remain open to maintain a working detour for the traveling public.

LANE CLOSURES

  • Monday, Sept. 18, to the morning of Sunday, Sept. 24 – Three lanes of southbound SR 167 from I-405 to South 180th Street will be closed nightly from 11:30 p.m. to 5:15 a.m.
  • Monday, Sept. 25, to the morning of Sunday, Oct. 1 – Three lanes of southbound SR 167 from I-405 to South 180th Street will be closed nightly from 11:30 p.m. to 5:15 a.m.
  • Tuesday, Sept. 26, to the morning of Wednesday, Sept. 27 – Two lanes of northbound SR 167 from South 180th Street to I-405 will be closed nightly from 8 p.m. to 4:30 a.m.

CITY STREET CLOSURES

  • Monday, Sept. 18, to the afternoon of Friday, Sept. 22 – One lane of southbound Talbot Road South between the northbound I-405 on-ramp to the southbound I-405 off-ramp will be closed from 9 a.m. to 3 p.m.
  • Monday, Sept. 25, to the afternoon of Friday, Sept. 29 – One lane of northbound Talbot Road South between the northbound I-405 on-ramp and the southbound I-405 off-ramp will be closed daily from 9 a.m. to 3 p.m.
  • Monday, Sept. 25, to the morning of Friday, Sept. 29 – 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. Signed detours will be in place for both the southbound and northbound directions of Talbot Road South.
  • Monday, Sept. 25, to the afternoon of Friday, Sept. 29 – One lane of northbound East Valley Road between Southwest 19th Street and Maple Avenue Southwest will be closed daily from 8:30 a.m. to 3 p.m.
140th Ave SE to Blaine Dr Vic Paving and ADA Compliance - #9071

Highway: SR 169    Region: Northwest     County: King    Location: Milepost(s) 22.86 - 24.84
Contacts: Patrick Fuller, Project Engineer, 206-805-2960
Description: WSDOT contractor crews are repaving a stretch of SR 169 in Renton.
Project website
Work schedule:

  • No lane or ramp closures are scheduled.

Little Bear Creek Fish Barrier Removal - #8865

Highway: SR 202    Region: Northwest    County: King    Location: Milepost(s) 0.12 – 0.18
Contact: Dave Lindberg, Project Engineer, 425-225-8725
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 website
Work schedule:

  • No lane or ramp closures scheduled.
Intersection Safety Improvement Active Warning Signs - #9057

Highway: SR 202    RegionNorthwest    County: King    Location: Milepost(s): 19.45
Contact: Ghadeer Baghai, WSDOT signals, 206-440-4446
Description: WSDOT crews will perform active warning sign improvement work on State Route 202 in Fall City.
Work Schedule:

  • Monday, Sept. 25, to Wednesday, Sept. 27 - At least one lane of either direction of State Route 202 at 308th Avenue Southeast will be closed from 9 a.m. to 3 p.m. daily.
Intersection Safety Improvement Active Warning Signs - #9057

Highway: SR 203    Region: Northwest    County: Snohomish    Location: Milepost(s): 20.74
Contact: Ghadeer Baghai, WSDOT signals, 206-440-4446
Description: WSDOT crews will perform active warning sign improvement work on State Route 203 in Monroe.
Work Schedule:

  • Thursday, Sept. 28, to Friday, Sept. 29 - At least one lane of either direction of State Route 203 at 203rd Street Northeast will be closed from 9 a.m. to 3 p.m. daily.
S 168th St to S 112th St Vic Paving, ADA and Barrier Replacement - #9051

Highway: SR 509    Region: Northwest    County: King    Location: Milepost(s) 24.32 - 27.87
Contact: Aleta Borschowa, Project Engineer, 206-768-5601
Description: WSDOT contractor crews are repaving and installing concrete barriers on SR 509 in Burien.
Project website
Work schedule:

  • **HIGH IMPACT** Friday, Sept. 22, to the morning of Monday, Sept. 25 - Northbound SR 509 traffic will be reduced to one lane between South 168th Street and South 112th Street from 7 p.m. Friday to 5 a.m. Monday. This work is weather dependent.
  • **HIGH IMPACT** Friday, Sept. 22, to the morning of Monday, Sept. 25 -Southbound SR 509 traffic will be reduced to one lane between South 112th Street and South 168th Street from 8 p.m. Friday to 6 a.m. Monday. This work is weather dependent.
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 website
Work schedule:

  • No lane or ramp closures are scheduled.
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 website
Work schedule:

  • No lane or ramp closures are scheduled.
NB S 260th St to Duwamish River Br Concrete Pavement Rehab - #8992

Highway: SR 516    Region: Northwest    County: King    Location: Milepost(s) 1.90
Contact: Mike Askarian, Project Engineer, 206-768-5861
Description: WSDOT contractor crews are rehabilitating northbound I-5 between South 260th Street in Des Moines and the Duwamish River Bridge in Tukwila.
Project website
Work schedule:

  • No lane or ramp closures are scheduled.
Des Moines Memorial Drive Interchange Improvements - #9078

Highway: SR 518    Region: Northwest    County: King    Location: Milepost(s) 0.18 - 0.65
ContactAleta Borschowa, Project Engineer, 206-768-5601
Description: WSDOT contractor crews are adding a new two-lane off-ramp from eastbound SR 518 to Des Moines Memorial Drive.
Project website
Work schedule:

  • No lane or ramp closures are scheduled.
S 168th St to S 112th St Vic Paving, ADA, & Barrier Replacement - #9051

Highway: SR 518    RegionNorthwest    County: King    Location: Milepost(s) 00.50
Contact: Aleta Borschowa, Project Engineer, 206-768-5601
Description: WSDOT contractor crews are repaving and installing concrete barriers on SR 509 in Burien.
Project website
Work schedule:

  • No lane or ramp closures are scheduled.
Issaquah Bridge Inspection Work

Highway: SR 900    Region: Northwest    County: King    Location: Milepost(s): 21.54
Contact: Ally Barrera, Communications, 206-440-4457
Description: WSDOT bridge maintenance crews are performing bridge inspection on SR 900 in Issaquah.
Work schedule:

  • Sunday, Sept. 24 – The right lane of westbound SR 900 at I-90 will be closed from 8 to 8:15 a.m.
  • Sunday, Sept. 24 – The left lane of westbound SR 900 at I-90 will be closed from 8:15 to 8:30 a.m.