Infrastructure

I-405 and I-90 Closures Set for Week

Wednesday, September 16, 2026

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I-405 and I-90 lane and ramp closures begin Monday, September 14, 2026, and continue through September 18 for overnight work and through September 20 for weekend work.

The closures include northbound I-405 off-ramps to Northeast Fourth and Eighth Streets, up to four lanes of southbound I-405 from milepost 14 to 12. 5, and up to four lanes of northbound I-405 from milepost 12. 5 to 13. 8, all closed nightly from 9 p.m. to 5 a.m. I-90 eastbound will reduce to one lane at Richards Road from 8 p.m. Friday, September 18, to 2 p.m. Sunday, September 20, and the eastbound I-90 HOV off-ramp at Bellevue Way Southeast will close during the same weekend.

WSDOT notes detours will be signed for ramp closures and advises drivers to expect delays and congestion during the closures.

📄 Source: WSDOT — Highway Construction & Closures — https://wsdot.wa.gov/travel/road-construction

Source receipts7 of 12 claims supported · 58%

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I-405 and I-90 lane and ramp closures begin Monday, September 14, 2026No usable supporting receipt — unverified.
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The closures continue through September 18 for overnight work“405 [1 mi from Eastside]: The northbound I-405 off-ramps to Northeast Fourth Street / Northeast Eighth Street will be closed nightly, 10 p.m. Monday, Sept. 14 – 4:30 a.m. Friday, Sept. 18. A signed detour will be in place.”
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The closures continue through September 20 for weekend workNo usable supporting receipt — unverified.
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The closures include northbound I-405 off-ramps to Northeast Fourth and Eighth Streets“405 [1 mi from Eastside]: The northbound I-405 off-ramps to Northeast Fourth Street / Northeast Eighth Street will be closed nightly, 10 p.m. Monday, Sept. 14 – 4:30 a.m. Friday, Sept. 18. A signed detour will be in place.”
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Up to four lanes of southbound I-405 from milepost 14 to 12.5 are closedNo usable supporting receipt — unverified.
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Up to four lanes of northbound I-405 from milepost 12.5 to 13.8 are closed“Up to four lanes of northbound I-405 from milepost 12.5 to milepost 13.8 will be closed nightly, 9 p.m. Monday, Sept. 14 – 4:30 a.m. Friday, Sept. 18.”
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The closures are nightly from 9 p.m. to 5 a.m.No usable supporting receipt — unverified.
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I-90 eastbound will reduce to one lane at Richards Road“090 [2 mi from Eastside]: From 8 p.m. Friday, Sept. 18, to 2 p.m. Sunday, Sept. 20, eastbound I-90 will reduce to one lane at Richards Road for bridge work and paving on the highway overpass.”
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The reduction to one lane at Richards Road occurs from 8 p.m. Friday, September 18“090 [2 mi from Eastside]: From 8 p.m. Friday, Sept. 18, to 2 p.m. Sunday, Sept. 20, eastbound I-90 will reduce to one lane at Richards Road for bridge work and paving on the highway overpass.”
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The reduction to one lane at Richards Road ends at 2 p.m. Sunday, September 20“090 [2 mi from Eastside]: From 8 p.m. Friday, Sept. 18, to 2 p.m. Sunday, Sept. 20, eastbound I-90 will reduce to one lane at Richards Road for bridge work and paving on the highway overpass.”
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The eastbound I-90 HOV off-ramp at Bellevue Way Southeast will close“090 [2 mi from Eastside]: From 8 p.m. Friday, Sept. 18, to 2 p.m. Sunday, Sept. 20, the eastbound I-90 HOV off-ramp at Bellevue Way Southeast will close for construction. Signed detours will be available.”
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The eastbound I-90 HOV off-ramp at Bellevue Way Southeast closes during the same weekendNo usable supporting receipt — unverified.