Infrastructure

I-90, I-405, SR 20 Work Scheduled Through Mid-August

Tuesday, August 4, 2026

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I-90 and I-405 ramps, along with SR 20 and US 2, will see lane closures and ramp shutdowns through mid-August, according to WSDOT. The eastbound I-90 off-ramp to Factoria Boulevard will close nightly from Aug. 3 to Aug. 7 and again Aug. 9 to Aug. 14 for guardrail installation.

SR 20 northbound at Race Rd (MP 16) will have a right lane closure starting Aug. 4. The northbound I-405 off-ramp to Coal Creek Parkway Southeast and the I-405 on-/off-ramps to Northeast 85th Street will close from Aug. 7 to Aug. 10. US 2 east of Tye River Road will alternate traffic with flaggers on Aug. 4-6.

WSDOT notes signed detours will guide drivers around closures. Work on I-405 ramps at Northeast 85th Street will end Aug. 10 at 5 a.m. and I-90 ramp closures will end Aug. 14 at 5 a.m.

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

Source receipts10 of 11 claims supported · 91%

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I-90 and I-405 ramps, along with SR 20 and US 2, will see lane closures and ramp shutdowns through mid-AugustNo usable supporting receipt — unverified.
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The eastbound I-90 off-ramp to Factoria Boulevard will close nightly from Aug. 3 to Aug. 7“090: From 9 p.m. to 5 a.m. nightly Monday, Aug. 3, through Friday morning, Aug. 7, and from Sunday Aug. 9, until Friday morning, Aug. 14, the eastbound I-90 off-ramp to Factoria Boulevard will close for guardrail installation.”
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The eastbound I-90 off-ramp to Factoria Boulevard will close nightly again Aug. 9 to Aug. 14“From 9 p.m. to 5 a.m. nightly Monday, Aug. 3, through Friday morning, Aug. 7, and from Sunday Aug. 9, until Friday morning, Aug. 14, the eastbound I-90 off-ramp to Factoria Boulevard will close for guardrail installation.”
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The eastbound I-90 off-ramp to Factoria Boulevard will close nightly for guardrail installation“From 9 p.m. to 5 a.m. nightly Monday, Aug. 3, through Friday morning, Aug. 7, and from Sunday Aug. 9, until Friday morning, Aug. 14, the eastbound I-90 off-ramp to Factoria Boulevard will close for guardrail installation.”
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SR 20 northbound at Race Rd (MP 16) will have a right lane closure starting Aug. 4“020: On SR 20 northbound at Race Rd (MP 16) the right lane is closed due to roadwork. Effective: Aug 4, 2026, 7:13 AM”
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The northbound I-405 off-ramp to Coal Creek Parkway Southeast will close from Aug. 7 to Aug. 10“405: The northbound I-405 off-ramp to Coal Creek Parkway Southeast will be fully closed day and night, 11:30 p.m. Friday, Aug. 7 – 4 a.m. Monday, Aug. 10. Signed detours will be in place.”
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The I-405 on-/off-ramps to Northeast 85th Street will close from Aug. 7 to Aug. 10“405: Friday, August 7 to the morning of Monday, August 10: The northbound/southbound I-405 on-/off-ramps to Northeast 85th Street (Exit 18) 10 p.m. - 5 a.m. Northeast 85th Street will also be closed from Sixth Street to 120th Avenue Northeast.”
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US 2 east of Tye River Road will alternate traffic with flaggers on Aug. 4-6“002: From 7:30 a.m. to 2:30 p.m. Tuesday, Aug. 4, US 2 traffic will alternate with flaggers east of Tye River Road Northeast (milepost 53) for maintenance. This work may also need to occur on Wednesday, Aug. 5 and Thursday, Aug. 6.”
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WSDOT notes signed detours will guide drivers around closures“Signed detours will guide people around the ramp closure.”
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Work on I-405 ramps at Northeast 85th Street will end Aug. 10 at 5 a.m.“405: Friday, August 7 to the morning of Monday, August 10: The northbound/southbound I-405 on-/off-ramps to Northeast 85th Street (Exit 18) 10 p.m. - 5 a.m. Northeast 85th Street will also be closed from Sixth Street to 120th Avenue Northeast. Effective: Jul 31, 2026, 12:00 AM Expected end: Aug 10, 2026, 5:00 AM”
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I-90 ramp closures will end Aug. 14 at 5 a.m.“Effective: Jul 30, 2026, 1:52 PM Expected end: Aug 14, 2026, 5:00 AM”