I-5
Route ID
005
File field should be
Southbound I-5 mainline closed in downtown Seattle overnight July 28; traffic to use express lanes
SEATTLE – The southbound Interstate 5 mainline through downtown Seattle will close Friday night, July 28, and all southbound traffic will use the express lanes. Beginning at 11 p.m. Friday, July 28, until 6 a.m. Saturday, July 29, all southbound mainline lanes will close near the Seattle Convention Center for scheduled maintenance.
During the closure, Washington State Department of Transportation maintenance crews will conduct fire system testing under the Convention Center.
Expect delays on I-5 during JBLM Airshow July 15-16
Travelers encouraged to carpool, take transit to help reduce congestion
LAKEWOOD – For the first time in seven years, highflyers of all kinds are returning to Joint Base Lewis-McChord July 15-16.
The JBLM Airshow is expected to draw spectators from throughout the region. Travelers will see increased traffic on Interstate 5 and State Route 512 both days of the event.
Building new bridges over I-5 in SeaTac/Des Moines requires significant traffic shift starting June 26
Nighttime drivers will use cross-over lane while girders are set for new South 216th Street bridge and new flyover ramp
SEATAC – Lifting and carefully placing long pieces of concrete weighing roughly 200,000 pounds is no easy feat, but that is about to happen on Interstate 5 in the SeaTac/Des Moines area.
Update: Nighttime speed reduction and lane closures for fuel cleanup on southbound I-5 in Lacey wrap up
Lane closures and reduced speed limit lifted
UPDATE: Crews have finished removing contaminated soil on southbound I-5 in Lacey.
LACEY – Cleanup from a recent tanker truck spill brought delays to overnight and early morning travelers on southbound Interstate 5 in Thurston County.
Starting Sunday, April 23, crews closed lanes and reduced speeds to remove soil contaminated with diesel fuel along the roadway on southbound I-5 between mileposts 109.75 and 110.10 near Northeast Carpenter Road in Lacey.
Public invited to weigh in on the future of I-5 through the Nisqually Valley
Online open house will run throughout the month of June
LACEY – Community members have an opportunity to provide feedback on a report that will help shape the future of Interstate 5 through the Nisqually Valley.
Update: Overnight ramp closures, detours at I-5/SR 18 interchange May 3-5 and May 2 on SR 509
UPDATE: Work rescheduled for week of May 1
FEDERAL WAY – Evening travelers in south King County should add additional time or adjust routes the week of May 1 for ramp and/or lane closures in two locations, including State Route 509 and the Interstate 5/State Route 18 interchange in Federal Way.
Slow down – lives are on the line.
In 2023, speeding continued to be a top reason for work zone crashes.
Even one life lost is too many.
Fatal work zone crashes doubled in 2023 - Washington had 10 fatal work zone crashes on state roads.
It's in EVERYONE’S best interest.
95% of people hurt in work zones are drivers, their passengers or passing pedestrians, not just our road crews.