Last update: Thursday, May 24, 1:39 p.m.
Updates are posted frequently.
Before heading out the door, be sure you check your entire route for any construction activities that may delay your trip.
Use the list below to help plan your route and reach your destination.
This information changes frequently. Please check back often.
If you have questions or comments that are not addressed by these resources, please contact the I-405 Project Office at 425-456-8585.
Last update: 1:23 p.m. 5/24/12
Milepost: 13.5 to 30
Lisa Hodgson, Project Engineer
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I-405 Mainline
- Monday, May 21 - Friday, May 25 – No construction related lane or ramp closures are scheduled this week.
- Tuesday, May 29 to the morning of Thursday, May 31 – Crews will close the northbound I-405 off-ramp to Northeast 128th Street, nightly from 11:59 p.m. to 5 a.m.
- Tuesday, May 29 to the morning of Thursday, May 31 – Crews will close the Northeast 128th Street on-ramp to northbound I-405, nightly from 11:59 p.m. to 6 a.m.
- Tuesday, May 29 to the morning of Thursday, May 31 – Crews will close the northbound I-405 carpool lane between Northeast 85th Street and Northeast 124th Street, daily from 8 p.m. to 11:59 a.m.
- Tuesday, May 29 to the morning of Thursday, May 31 – Crews will close the northbound I-405 carpool lane between Northeast 124th Street and Northeast 160th Street, daily from 9 p.m. to 11 a.m.
- Thursday, May 31 to the morning of Friday, June 1 – Crews will close the northbound I-405 carpool lane between SR 522 and Northeast 195th Street from 9 p.m. to 7 a.m.
- Thursday, May 31 to the morning of Friday, June 1 – Crews will close the southbound I-405 carpool lane between Northeast 160th Street and Northeast 128th from 8 p.m. to 5 a.m.
Last update: 1:23 p.m., 5/24/12
Milepost: 19.87
Hien Trinh , Project Engineer, 425-956-2153
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City Streets
- Ongoing until late June, 2012 - Crews will close the NE 116th Street center lane for approximately 1000 feet west of 120th Avenue Northeast During the closure, drivers will be restricted from turning left from eastbound NE 116th St to northbound 120th Ave NE from 6:30 - 9:30 a.m. and 3:00 to 6:30 p.m. Monday through Friday.
- Monday, May 21 - the morning of Friday, May 25 - Crews will reduce 120th Avenue Northeast (near Northeast 116th Street) from 10 p.m. to 5 a.m. Flaggers will direct traffic.
- Tuesday, May 29 - the morning of Friday, June 1 - Crews will reduce 120th Avenue Northeast (near Northeast 116th Street) from 10 p.m. to 5 a.m. Flaggers will direct traffic.
Last update: 1:39 p.m., 5/24/12
leposts: 13.82 to 14.85
Seema Javeri, Project Engineer, 425-889-0244
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SR 520 Mainline
Thursday, May 24 to the morning of Friday, May 25 - Crews will close the two right lanes of eastbound SR 520 east of 124th Avenue Northeast. The first lane will close at 7 p.m., the second lane at 11 p.m. All lanes will reopen by 5 a.m.
SR 520 Ramps
- Monday, May 21 - the morning of Friday, May 25 - Crews will close the on-ramp from 124th Avenue Northeast to westbound SR 520, nightly from 9 p.m. to 5 a.m.
- Thursday, May 24 - the morning of Friday, May 25 - Crews will close the eastbound SR 520 off-ramp to 124th Avenue Northeast from 9 p.m. to 4 a.m.
City Streets
- Monday, May 21 - the morning of Friday, May 25 – Crews will close Northeast 12th Street between 112th Avenue Northeast and 116th Avenue Northeast, nightly from 8 p.m. to 5 a.m.
Monday, May 28 - Friday, June 1–
No construction related lane or ramp closures are scheduled this week.
Last update: 5/14, 10:44 a.m.
- No maintenance is scheduled at this time.