Overview
Construction schedules and activities are subject to weather conditions. Please review the construction updates on this page for the most current information on I-405 construction projects. Travelers can also call 511 for real-time traffic and weather updates
Updates are posted frequently.
Last updated: Nov. 19, 2009, 1:36 p.m.
If you have questions or comments that are not addressed by these resources, please contact the I-405 Project Office at 425-456-8585.
For construction update information about other projects in King County visit the King County Construction project updates page.
1:34 p.m., 11/19
I-405: I-5 to SR 169 Stage 1 Widening (I-5 to SR 167) - #7295
Mileposts: 0 - 4.5
Jon Harris, Project Engineer, 425.282.6826
WSDOT will add one northbound and one southbound lane to I-405 between I-5 and SR 167. We will also add one southbound lane on SR 167 between I-405 and SW 41st Street, and extend the southbound SR 167 HOV lane from I-405 to the
start of the HOT lane.
I-405
- Thursday, Nov. 19 - Crews will close the two right lanes on northbound I-405 between SR 181 and Oakesdale Avenue SW for construction work. The first lane will close at 10 p.m. and the second lane will close at 11 p.m. All lanes will reopen by 5 a.m.
- Thursday, Nov. 19 - Crews will close the carpool lane on southbound I-405 between Oakesdale Avenue SW and SR 181 from 10 p.m. to 5 a.m. for construction work.
- Monday, Nov. 23 - Crews will close up to two lanes in both directions on I-405 between I-5 and SR 167 for construction work. The first lane will close at 10 p.m. and the second lane will close at 11 p.m. All lanes will reopen by 5 a.m.
- Tuesday, Nov. 24 - Crews will close the two right lanes in both directions on I-405 between I-5 and Oakesdale Avenue SW for construction work. The first lane will close at 10 p.m. and the second lane will close at 11 p.m. All lanes will reopen by 5 a.m.
1:33 p.m., 11/19
I-405: I-5 to SR 169 Stage 2 Widening (SR 167 to SR 169) - #7624
Mileposts: 2.35 – 4.5
Lisa Hodgson, Project Engineer, 425-496-2038
WSDOT will add a northbound and southbound lane to I-405 between SR 167 and SR 169. We will also construct a new half-diamond interchange at SR 515 and reconstruct the Benson Road Bridge over I-405.
I-405
- Monday, Nov. 16 – morning of Friday, Nov. 20 – Crews will close two right lanes on northbound I-405 between SR 167 and SR 169 nightly for construction work. The first lane will close at 10 p.m. and the second at midnight. Both lanes will reopen by 4:30 a.m.
- Monday, Nov. 16 – morning of Friday, Nov. 20 – Crews will close two right lanes on southbound I-405 between SR 169 and SR 167 nightly for construction work. The first lane will close at 9 p.m. and the second at 11 p.m. Both lanes will reopen by 4 a.m.
- Monday, Nov. 23 – morning of Wednesday, Nov. 25 – Crews will close two right lanes on northbound I-405 between SR 167 and SR 169 nightly for construction work. The first lane will close at 10 p.m. and the second at midnight. Both lanes will reopen by 4:30 a.m.
- Monday, Nov. 23 – morning of Wednesday, Nov. 25 – Crews will close two right lanes on southbound I-405 between SR 169 and SR 167 nightly for construction work. The first lane will close at 9 p.m. and the second at 11 p.m. Both lanes will reopen by 4 a.m
1:33 p.m., 11/19
I-405: South Bellevue Widening (112th Ave SE to SE 8th Street) - #7283
mileposts: 8.94 - 12.34
Seema Javeri, Project Engineer, 425.401.4126
We will widen I-405 within the city of Bellevue between 112th Avenue SE and SE Eighth Street. The principle features of the 112th Avenue SE to SE Eighth Street project are one southbound lane from SE Eighth Street to I-90 and one northbound lane from 112th Avenue to SE Eighth Street.
- Thursday, Nov. 19 - Monday, Nov. 23 - We do not expect construction to affect traffic.
1:36 p.m. 11/19
I-405: NE 10th Street Bridge Crossing - #7417
Mileposts: 13.5 - 14.28
Mark Sawyer, Project Engineer, 425.649.4429
WSDOT is partnering with the city of Bellevue to build a new freeway bridge at NE 10th Street in Bellevue. The NE 10th Street Bridge will be built in two stages. The city of Bellevue will construct the first stage. WSDOT will construct the bridge over I-405 in the second stage.
City Streets
- Monday, Nov. 16 - Friday, Nov. 20 - Crews will have intermittent closures of the right lane on northbound 112th Avenue NE from NE Eighth Street to NE 10th. Street daily from 8 a.m. to 3 p.m. for construction work.
- Monday, Nov. 23 - Wednesday, Nov. 25, Friday, Nov. 27 - Crews will have intermittent closures of the right lane on northbound 112th Avenue NE from NE Eighth Street to NE 10th. Street daily from 8 a.m. to 3 p.m. for construction work.
7:23 a.m., 11/19
I-405: NE 195th to SR 527 – Northbound Auxiliary Lane - #7761
Mileposts: 24.62 – 26.43
Chad Brown, Project Engineer
WSDOT will add an auxiliary lane on northbound I-405 from NE 195th Street to SR 527.
- Monday, Nov. 16 – morning of Friday, Nov. 21 – Crews will close the right lane on northbound I-405 between NE 195th Street to NE 228th Street nightly from 9 p.m. to 5:30 a.m. for construction work.
- Sunday, Nov. 22 - the morning of Wednesday, Nov. 25 - Crews will close the right lane of northbound I-405 from NE 195th Street to the NE 228th Street overpass nightly from 9 p.m. to 5:30 a.m. for construction work.