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I-405 - Construction Updates

Last update: 4:08 p.m. Thursday, Sept. 18, 2014

If you have questions or comments about I-405 in Washington state that are not addressed by these resources, please contact the I-405 Project Office at 425-456-8585.



I-405: NE 6th Street to I-5 Widening and Express Toll Lanes Project - #8204

Last update: 4:08 p.m., 9/18/14
Milepost: 13.5 - 30
Steve Peer, Public Information, 425-456-8624
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BLT map


Ramp Closures:

Bellevue area

  • No planned closures this week

Bothell area

  • Monday, September 15 to the morning of Friday, September 19 – The northbound I-405 off-ramp to Northeast 160th Street will close from 11 p.m. to 6 a.m. nightly for paving work.
  • Monday, September 15 to the morning of Friday, September 19 – The Northeast 160th Street on-ramp to southbound I-405 will close from 8 p.m. to 5 a.m. nightly for paving work.
  • Saturday, September 20 to the morning of Sunday, September 21 – The northbound I-405 off-ramp to Northeast 160th Street will close from 11 p.m. to 8 a.m. for paving work.
  • Monday, September 22 to the morning of Friday, September 26 – The Northeast 160th Street on-ramp to southbound I-405 will close from 8 p.m. to 5 a.m. nightly for paving work.
  • Monday, September 22 to the morning of Friday, September 26 – The northbound I-405 off-ramp to Northeast 160th Street will close from 11 p.m. to 6 a.m. nightly for paving work.

Kirkland area   

  • Monday, September 15 to the morning of Friday, September 19 – The northbound I-405 off-ramp to Northeast 70th Street will close from 9 p.m. to 6 a.m. nightly for electrical work (will maintain bus ramp by 5am for transit).
  • Monday, September 15 to the morning of Friday, September 19 – The Northeast 70th Street on-ramp to southbound I-405 will close from 8 p.m. to 6 a.m. nightly for paving work.
  • Monday, September 15 to the morning of Friday, September 19 – The Northeast 85th Street on-ramp to southbound I-405 will close from 10 p.m. to 6 a.m. nightly for paving work. This ramp will not close if the Northeast 70th Street on-ramp to southbound I-405 closes.
  • Monday, September 15 to the morning of Friday, September 19 – The southbound I-405 off-ramp to Northeast 70th Street will close from 9 p.m. to 6 a.m. nightly for paving work. This ramp will not close if the northbound I-405 off-ramp to Northeast 70th Street closes).
  • Monday, September 15 to the morning of Friday, September 19 – The southbound I-405 off-ramp to Northeast 85th Street will close from 9 p.m. to 6 a.m. nightly for paving and drainage work. This ramp will not close if the southbound I-405 off-ramp to Northeast 70th Street closes).
  • Monday, September 15 to the morning of Friday, September 19 – The northbound I-405 off-ramp to Northeast 124th Street/Totem Lake Boulevard will close from 10 p.m. to 6 a.m. nightly for shoulder work. This ramp will not close if the NE 160th Street on-ramp to southbound I-405 or the northbound I-405 off-ramp to Northeast 160th Street closes.
  • Monday, September 15 to the morning of Friday, September 19 – The northbound I-405 off-ramp to Northeast 128th Street will close from midnight to 6 a.m. nightly for electrical and drainage work.
  • Monday, September 15 to the morning of Friday, September 19 – The Northeast 128th Street on-ramp to northbound I-405 will close from midnight to 6 a.m. nightly for electrical, drainage and lane restriping work.
  • Monday, September 15 to the morning of Friday, September 19 – The southbound I-405 off-ramp to Northeast 128th Street will close from 8 p.m. to 4:50 a.m. nightly for electrical work.
  • Monday, September 15 to the morning of Friday, September 19 – The Northeast 128th Street on-ramp to southbound I-405 will close from 8 p.m. to 4:50 a.m. nightly for electrical work.
  • Monday, September 15 to the morning of Friday, September 19 – The northbound I-405 off-ramp to Northeast 160th Street will close from 11 p.m. to 6 a.m. nightly for paving work.
  • Monday, September 15 to the morning of Friday, September 19 – The Northeast 160th Street on-ramp to southbound I-405 will close from 8 p.m. to 5 a.m. nightly for paving work.
  • Friday, September 19 to the morning of Saturday, September 20 – The Northeast 128th Street on-ramp to northbound I-405 will close from midnight to 6 a.m. for paving work.
  • Saturday, September 20 to the morning of Sunday, September 21 – The northbound I-405 off-ramp to Northeast 160th Street will close from 11 p.m. to 8 a.m. for paving work.
  • Monday, September 22 to the morning of Friday, September 26 – The Northeast 70th Street on-ramp to southbound I-405 will close from 8 p.m. to 6 a.m. nightly for roadway excavation work.
  • Monday, September 22 to the morning of Friday, September 26 – The southbound I-405 off-ramp to Northeast 70th Street will close from 9 p.m. to 6 a.m. nightly for roadway excavation work. This ramp will not close if the northbound I-405 off ramp to Northeast 70th street closes.
  • Monday, September 22 to the morning of Friday, September 26 – The Northeast 85th Street on-ramp to southbound I-405 will close from 10 p.m. to 6 a.m. nightly for grading and electrical work This ramp will not close if the Northeast 70th Street on-ramp to southbound I-405 closes.
  • Monday, September 22 to the morning of Thursday, September 25 – The southbound I-405 off-ramp to Northeast 85th Street will close from 9 p.m. to 6 a.m. nightly for drainage and sawcutting work. This ramp will not close if the southbound I-405 off-ramp to Northeast 70th Street closes.
  • Monday, September 22 to the morning of Friday, September 26 – The northbound I-405 off-ramp to Northeast 128th Street will close from midnight to 6 a.m. nightly for electrical and drainage work.
  • Monday, September 22 to the morning of Friday, September 26 – The Northeast 128th Street on-ramp to northbound I-405 will close from midnight to 6 a.m. nightly for electrical and drainage work.
  • Monday, September 22 to the morning of Friday, September 26 – The southbound I-405 off-ramp to Northeast 128th Street will close from 8 p.m. to 4:50 a.m. nightly for electrical work.
  • Monday, September 22 to the morning of Friday, September 26 – The Northeast 128th Street on-ramp to southbound I-405 will close from 8 p.m. to 4:50 a.m. nightly for electrical work.
  • Monday, September 22 to the morning of Friday, September 26 – The Northeast 160th Street on-ramp to southbound I-405 will close from 8 p.m. to 5 a.m. nightly for paving work.
  • Monday, September 22 to the morning of Friday, September 26 – The northbound I-405 off-ramp to Northeast 160th Street will close from 11 p.m. to 6 a.m. nightly for paving work.
  • Tuesday, September 23 to the morning of Friday, September 26 – The northbound I-405 off-ramp to Northeast 70th Street will close from 9 p.m. to 6 a.m. nightly for electrical work.
  • **DRIVER ALERT** Friday, September 26 to the morning of Saturday, September 27 – The Northeast 128th Street on-ramp to northbound I-405 will close around the clock from midnight to midnight for barrier, roadway excavation, drainage, paving and lane restriping work (24-hour ramp closure).
  • Friday, September 26 to the morning of Saturday, September 27 – The southbound I-405 off-ramp to Northeast 128th Street will close from 9 p.m. to 7:30 a.m. for barrier, roadway excavation, drainage, paving and lane restriping work.

Lane Closures: 

Bellevue area

  • Monday, September 22 to the morning of Friday, September 26 – Up to three lanes of southbound I-405 between Northeast 70th Street and SR 520 will close starting at 7 p.m. for lane restriping work. One lane will open by 4:30 a.m. and all lanes will be open by 5 a.m.

Bothell/Lynnwood area

  • Wednesday, September 17 to the afternoon of Friday, September 19 – One lane of northbound I-405 between Northeast 195th Street and SR 527 will close from 7 p.m. to 1 p.m. nightly for tolling work.
  • Wednesday, September 17 to the morning of Friday, September 19 – Up to two lanes of northbound I-405 between SR 527 and I-5 in Lynnwood will close from 7:30 p.m. to 6 a.m. nightly for tolling work.
  • Monday, September 22 to the afternoon of Tuesday, September 23 – One lane of northbound I-405 between Northeast 195th Street and SR 527 will close from 7 p.m. to 1 p.m. for tolling work.
  • Monday, September 22 to the morning of Friday, September 26 – Up to two lanes of northbound I-405 between SR 527 and I-5 in Lynnwood will close from 7:30 p.m. to 6 a.m. nightly for tolling work.

Kirkland area

  • Monday, September 15 to the morning of Friday, September 19 – Up to two lanes of northbound I-405 between Northeast 70th Street and Northeast 85th Street will from 8 p.m. to 7 a.m. nightly for electrical work.
  • Monday, September 15 to the morning of Friday, September 19 – One lane of southbound I-405 between Northeast 85th Street and Northeast 70th Street will close from 7 p.m. to 5 a.m. nighty for paving work.
  • Monday, September 15 to the morning of Friday, September 19 – One lane of southbound I-405 between Northeast 124th Street and Northeast 85th Street will close from 7 p.m. to 5 a.m. nightly for paving and drainage work.
  • Friday, September 19 to the morning of Saturday, September 20 – Up to three lanes of northbound I-405 between Northeast 124th Street and Northeast 160th Street will close starting at 8 p.m. Two lanes will close at 9 p.m., and three lanes will close at midnight. All lanes will be open by 7:30 a.m. Saturday.
  • Saturday, September 20 to the afternoon of Sunday, September 21 – Up to three lanes of northbound I-405 between Northeast 124th Street and Northeast 160th Street will close starting at 7 p.m. Two lanes will close at 8 p.m., and three lanes will close at midnight. One lane will reopen by 8:30 a.m., and all lanes will reopen by 10:30 a.m. Sunday.
  • Monday, September 22 to the morning of Friday, September 26 – Up to three lanes of southbound I-405 between Northeast 70th Street and SR 520 will close starting at 7 p.m. for lane restriping work. One lane will open by 4:30 a.m. and all lanes will be open by 5 a.m.
  • Friday, September 26 to the afternoon of Monday, September 29 – One lane of northbound I-405 between Northeast 124th Street and Northeast 128th Street will close from 9 p.m. to noon for barrier, roadway excavation, drainage, paving and lane restriping.

I-405: Landscape maintenance

Last update: 10:20 a.m., 9/9
Milepost: 26.75
Lee Fanning, WSDOT maintenance, 425-739-3739

  • Wednesday, Sept. 10 to the afternoon of Thursday, Sept 11 - The right lane of the northbound SR 527 on-ramp to northbound I-405 will close daily from 9:30 a.m. to 2:30 p.m. for landscaping maintenance.

I-405: City of Kirkland Street Overlay Project - NE 124th Street

Last update: 1:59 p.m., 9/9
Milepost: 20.30
Christian Knight, neighborhood services coordinator, 425-587-3831
Get project information

  • Tuesday, Sept. 9 to the morning of Wednesday, Sept. 10 -The westbound 124th Avenue Northeast on-ramp to southbound I-405 will close from 9 p.m. to 5 a.m. for paving work.
  • Wednesday, Sept. 10 to the morning of Thursday, Sept. 11 - The eastbound 124th Avenue Northeast on-ramp to southbound I-405 will close from 9 p.m. to 5 a.m. for paving work.
  • Thursday, Sept. 11 to the morning of Friday, Sept. 12 - The westbound 124th Avenue Northeast on-ramps to northbound and southbound I-405 will close from 9 p.m. to 5 a.m. for paving work.
  • Thursday, Sept. 11 to the morning of Friday, Sept. 12 - The northbound I-405 off-ramp to 124th Avenue Northeast will close from 9 p.m. to 5 a.m. for paving work.

I-405: SE 8th to Northup Way Paving - #8601

Last update: 12:46 p.m., 9/19
Milepost: 13.68-14.85
Mark Sawyer, project engineer, 425-225-8799
Get project information

  • Thursday, Sept. 18 to the morning of Friday, Sept. 19 - The three right lanes of southbound I-405 between SR 520 and Southeast 8th Street will close from 8 p.m. to 5 a.m. for paving.
  • Thursday, Sept. 18 to the morning of Friday, Sept. 19 - The 4th Street Northeast on- and off ramps and the Southeast 8th Street off ramp from southbound I-405 will close from 10 p.m. to 5 a.m. for paving work. 
  • Saturday, Sept. 20 to the morning of Sunday, Sept. 21 – up to three right lanes of southbound I-405 between SR 520 and Southeast 8th Street will close from 7 p.m. to 10 a.m. for paving.
  • Saturday, Sept. 20 to the morning of Sunday, Sept. 21 – The eastbound SR 520 ramp to southbound I-405 will close from 9 p.m. to 6 a.m. for paving.
  • Saturday, Sept. 20 to the morning of Sunday, Sept. 21 – The southbound I-405 on- and off-ramps to Northeast 8th Street will close from 10 p.m. to 7 a.m.
  • Saturday, Sept. 20 to the morning of Sunday, Sept. 21 – The southbound I-405 on- and off-ramps to Northeast 4th Street will close from 10 p.m. to 7 a.m. for paving.
  • Saturday, Sept. 20 to the morning of Sunday, Sept. 21 - The southbound I-405 off-ramp to Southeast 8th Street will close from 10 p.m. to 7 a.m. for paving work. Drivers will follow a signed detour.
  • Monday, Sept. 22 to the morning of Tuesday, Sept. 23 – Up to three right lanes of southbound I-405 between SR 520 and Southeast 8th Street will close from 8 p.m. to 5 a.m. for paving.
  • Monday, Sept. 22 to the morning of Tuesday, Sept. 23 – The southbound I-405 on- and off-ramps to Northeast 4th Street will close from 10 p.m. to 5 a.m. for paving.
  • Monday, Sept. 22 to the morning of Tuesday, Sept. 23 – The southbound I-405 off-ramp to Southeast 8th Street will close from 10 p.m. to 5 a.m. for paving.
  • Monday, Sept. 22 to the morning of Tuesday, Sept. 23 – The left lane of northbound I-405 between Northeast 6th Street and SR 520 will close from 8 p.m. to 5 a.m. for barrier removal.
  • Tuesday, Sept. 23 to the morning of Wednesday, Sept. 24 - The left lane of southbound I-405 between SR 520 and Northeast 8th Street will close from 8 p.m. to 5 a.m. for joint work.

I-405: SR 520 - 108th Ave NE to W Lake Sammamish Pkwy paving #8597

Last update: 12:56 p.m., 9/5
SR 520: 108th Ave NE to W Lake Sammamish Pkwy paving #8597
Milepost: 6.22 – 11.69
Mark Sawyer, Project Engineer, 425-225-8799
Get Project information

There may be closures on SR 520 for this project.

  • Wednesday, Sept. 24 to the morning of Thursday, Sept. 25 – The southbound I-405 ramp to eastbound SR 520 will close from 9 p.m. to 5 a.m. for striping work.
  • Wednesday, Sept. 24 to the morning of Thursday, Sept. 25 – The southbound I-405 ramp to eastbound SR 520 will close from 9 p.m. to 5 a.m. for striping work.