Puget Sound area weekly travel planner

This weekly updated page provides information on major construction projects and special events that could change your travel plans around Puget Sound. 

Planned construction and special events for the week of August 15 - 22

King and Snohomish counties

Monday, August 15, until the morning of Wednesday, August 17 - A single lane on both directions of SR 516 between 185th Avenue Southeast and 235th Avenue Southeast will close from 8 p.m. to 5 a.m. nightly. Drivers may experience flaggers alternating traffic, detours or pilot cars as needed. Visit the NWR Emergency Pavement Repair project page for more details.

Monday, August 15, until the morning of Thursday, August 18 - The northbound I-5 mainline lanes between the I-90 interchange and the end of the northbound I-5 collector/distributor will close from 9 p.m. to 5 a.m. nightly. Northbound traffic will shift to the northbound I-5 collector/distributor. The University Street and Cherry Street on-ramps will also be closed. Visit the I-5 - NB Seneca to SR 520 - Mobility Improvements project page for more details.

Monday, August 15, until the morning of Tuesday, August 16 – The northbound I-5 off-ramp to eastbound SR 520 will close from 9 p.m. to 5 a.m.

Monday, August 15, until the morning of Wednesday, August 17 – All lanes on southbound I-405 between Southeast 8th Street and the I-90 interchange will close from 10:30 p.m. to 4:30 a.m. nightly. A signed detour will be in place. Visit the I-405/Renton to Bellevue Widening and Express Toll Lanes Project webpage for more details.

Tuesday, August 16, until the morning of Monday, August 22 – All lanes on northbound SR 9 between Riverview Road/2nd Street and John Jump Road/30th Street will close from 8 p.m. Tuesday through 5 a.m. Monday. Visit the SR 9/Bickford Ave. Intersection Improvements project page for more details.

Tuesday, August 16, until the morning of Friday, August 19 - All lanes on southbound SR 9 between Riverview Road/2nd Street and John Jump Road/30th Street will close from 8 p.m. to 5 a.m. nightly. Visit the SR 9/Bickford Ave. Intersection Improvements project page for more details.

Wednesday, August 17, until the morning of Saturday, August 20 – All lanes on northbound I-405 between Southeast 8th Street and Northeast 4th Street will close from 11 p.m. to 4:30 a.m. nightly. A signed detour will be in place. Visit the I-405/Renton to Bellevue Widening and Express Toll Lanes Project webpage for more details.

Wednesday, August 17, until the morning of Friday, August 26 - Expect nighttime lane reductions on southbound I-5 near Kent between 8 p.m. and 6 a.m. Between 11 p.m. and 5 a.m., southbound I-5 will be reduced to one lane of travel.  Travelers should anticipate lane reductions in one-mile stretches between Military Road and SR 516 and plan ahead for increased travel time or consider alternate routes. Visit the SR 509 Completion Project webpage for more details.

Wednesday, August 17, until the morning of Thursday, August 18 – A single lane on both directions of SR 169 between Enumclaw Franklin Road Southeast and the SR 18 interchange will close from 8 p.m. to 5 a.m. Drivers may experience flaggers alternating traffic, detours or pilot cars as needed. Visit the NWR Emergency Pavement Repair project page for more details.

Thursday, August 18, until the morning of Friday, August 19 – All lanes on westbound SR 18 between Issaquah-Hobart Road Southeast and the I-90 interchange will close from 11 p.m. to 4 a.m. Drivers can detour using Issaquah-Hobart Road Southeast to get from I-90 to westbound SR 18. Visit the NWR Emergency Pavement Repair project page for more details.

Thursday, August 18, until the morning of Friday, August 19 – A single lane on both directions of SR 516 at 192nd Avenue Southeast will close from 8 p.m. to 5 a.m. Drivers may experience flaggers alternating traffic, detours or pilot cars as needed. Visit the NWR Emergency Pavement Repair project page for more details.

Thursday, August 18, until the morning of Friday, August 19 – The westbound I-90 off-ramp to northbound I-5 will close from 11:59 p.m. to 5 a.m.

Friday, August 19, until the morning of Monday, August 22 - All lanes on southbound SR 9 between Riverview Road/2nd Street and John Jump Road/30th Street will close from 8 p.m. Friday through 5 a.m. Monday. Visit the SR 9/Bickford Ave. Intersection Improvements project page for more details.

Friday, August 19, until the morning of Monday, August 22 - Up to three right lanes on southbound I-5 between the I-90 interchange and the West Seattle Bridge, and both the westbound and eastbound I-90 off-ramps to southbound I-5, will close from 7:30 p.m. Friday through 5 a.m. Monday. The off-ramps to the West Seattle Bridge/South Columbian Way and South Forest Street will also close during this time. All vehicles using the southbound I-5 collector/distributor, which has the off-ramps to Dearborn Street, I-90, Airport Way, and 4th Avenue South will have access to these off-ramps, but will not be able to continue to southbound I-5. The Spring and James Street on-ramps to southbound I-5 will only be able to access these off-ramps, & will not be able to continue to southbound I-5. Visit the I-5 - SB S Spokane St to I-90 W-S Ramp - Deck Overlay & Expansion Joints project webpage for more details.

Saturday, August 20, until the morning of Sunday, August 21 – Up to two right lanes on northbound I-5 between Lakeview Boulevard East and Northeast 45th Street will close from 11 p.m. to 7 a.m.

Sunday, August 21, until the morning of Monday, August 22 - The southbound I-405 off-ramp to Northeast 124th Street will close from 9 p.m. to 4 a.m.

Sunday, August 21, until the morning of Tuesday, August 23 – A single lane on both directions of SR 900 between the I-5 interchange and Duvall Avenue Northeast will close from 9 p.m. to 5 a.m. nightly. Visit the NWR Emergency Pavement Repair project page for more details.

Sunday, August 21, until the morning of Thursday, August 25 – The southbound I-405 off-ramps to both directions, eastbound and westbound, of SR 520 will close from 10 p.m. to 4:30 a.m. nightly.

Saturday, August 13, until further notice – The I-5 Express Lanes will be reduced from four to three lanes between the Ship Canal Bridge and Mercer Street until February 2023 as crews create a work zone for the SR 520/I-5 Express Lanes Connection Project. Visit the SR 520 I-5 Express Lanes Connection Project webpage for more details.

Friday, July 8, until further notice - The westbound SR 520 off-ramp to East Roanoke Street will be closed for 55 days straight beginning the evening of Friday, July 8, until further notice. During this time, travelers should use alternate exits, including the westbound SR 520 off-ramp to Montlake Boulevard, the northbound I-5 off-ramp to Northeast 45th Street, and the southbound I-5 off-ramp to Boylston Ave East. This closure is necessary to provide crews the space to build a retaining wall needed for construction of the SR 520 / I-5 Express Lanes Connection Project. Visit the SR 520 Construction Corner webpage for more details.

Friday, April 15, until further notice - The Redmond Way/SR 202 on-ramp to westbound SR 520 is closed for construction for an estimated four months.

Skagit, Island, and Whatcom counties

Wednesday, August 17, until the morning of Saturday, August 20 – All lanes on both directions of SR 20 at milepost 113.7 will close from 11:30 p.m. to 5 a.m. nightly.

Saturday, January 1, until further notice – Both directions of SR 20 will alternate traffic in a single lane with a temporary signal between mileposts 113.7 and 114, 24 hours a day.

Special events

Thursday, August 11, until the evening of Saturday, August 20 - Drivers will see increased congestion on both directions of SR 546 and SR 539 near Lynden during daylight and evening hours each day due to the Northwest Washington Fair at the Northwest Washington Fair and Event Center.

Thursday, August 18 - Drivers will see increased congestion on both directions of I-5, I-90 and SR 99 in Seattle from 3 p.m. to 10:00 p.m. due to the Seattle Seahawks game at Lumen Field.

Thursday, August 18 - Drivers will see increased congestion on both directions of I-5, I-90, SR 520 and SR 99 in Seattle from 5 p.m. to 11:59 p.m. due to the Seattle Storm game at Climate Pledge Arena.

Thursday, August 18, until the evening of Sunday, August 21 - Drivers will see increased congestion on both directions of I-5, I-90 and SR 99 in Seattle from 9 a.m. to 8 p.m. daily due to the Emerald City Comic Con at the Seattle Convention Center.

Friday, August 19 - Drivers will see increased congestion on both directions of I-5, I-90, SR 520 and SR 99 in Seattle from 5 p.m. to 11:59 p.m. due to the Kid Cudi concert at Climate Pledge Arena.

Saturday, August 20 - Drivers will see increased congestion on both directions of SR 20 and SR 525 on Whidbey Island due to the Tour de Whidbey bike race.

Saturday, August 20 - Drivers will see increased congestion on both directions of I-5, I-90 and SR 99 in Seattle from 2 p.m. to 10 p.m. due to the Chinatown-International District Block Party in the Seattle Chinatown-International District.

Saturday, August 20 - Drivers will see increased congestion on both directions of I-5, I-90, SR 520 and SR 99 in Seattle from 5 p.m. to 11:59 p.m. due to The Killers concert at Climate Pledge Arena.

Sunday, August 21 - Drivers will see increased congestion on both directions of I-5, I-90, SR 520 and SR 99 in Seattle from 11 a.m. to 6 p.m. due to the Seattle Storm game at Climate Pledge Arena.

Sunday, August 21 - Drivers will see increased congestion on both directions of I-5, I-90, SR 520 and SR 99 in Seattle from 11 a.m. to 8 p.m. due to Brasilfest at Seattle Center.

Latest from the WSDOT blog

Night groovin’ with accordions on the Tacoma Narrows Bridge

Revive I-5 work this weekend includes paving to remove the south end bumps

Seafair, Revive I-5 and multiple sporting events makes for a busy weekend ahead

8,683 animals crossed the Snoqualmie Pass East Project area

as recorded by WSDOT and partners in 2020 and 2021.

46% increase in Amtrak Cascades ridership to 251,000 passengers

in 2021 compared to 172,000 in 2020.

Nine wetland and stream mitigation sites across 32.7 acres added

to our monitoring program in 2021 to help offset climate change impacts.