Infrastructure

I-405, US 12, SR 508 closed for repairs

Tuesday, August 18, 2026

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Multiple Washington State Department of Transportation (WSDOT) projects will impact travel in the Bellingham area this week. From 8 p.m. Tuesday through 4:30 a.m. Friday, one eastbound lane of SR 522 will close nightly between Campus Way Northeast and 131st Avenue Northeast. Additionally, a single lane of US 12 over I-5 will close nightly from 7:30 p.m. Monday through 6 a.m. Thursday for bridge repairs.

I-405 will see multiple closures: the left express toll lane northbound between Northeast 160th Street and SR 527 will close nightly from 8:30 p.m. Monday to 5 a.m. Friday, while up to three southbound lanes between Coal Creek Parkway and milepost 7 will close nightly from 10:30 p.m. Monday to 5:30 a.m. Wednesday. SR 508 will have alternating traffic with flaggers starting August 18. SR 9 will remain closed south of Mount Vernon Big Lake Road until 6 a.m. Wednesday for a fish passage project.

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

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Multiple Washington State Department of Transportation (WSDOT) projects will impact travel in the Bellingham area this week.No usable supporting receipt — unverified.
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One eastbound lane of SR 522 will close nightly between Campus Way Northeast and 131st Avenue Northeast.“405: One general-purpose lane of eastbound SR 522 from Campus Way Northeast (milepost 10.4) to 131st Avenue Northeast (milepost 11.4) will be closed nightly from 8 p.m. Tuesday, August 18 to 4:30 a.m. Friday, August 21.”
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The closure of one eastbound lane of SR 522 will be from 8 p.m. Tuesday through 4:30 a.m. Friday.“405: One general-purpose lane of eastbound SR 522 from Campus Way Northeast (milepost 10.4) to 131st Avenue Northeast (milepost 11.4) will be closed nightly from 8 p.m. Tuesday, August 18 to 4:30 a.m. Friday, August 21.”
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A single lane of US 12 over I-5 will close nightly from 7:30 p.m. Monday through 6 a.m. Thursday for bridge repairs.“012: From 7:30 p.m. Monday, Aug. 10 to 6 a.m. Thursday, Aug. 20: A single lane of US 12 over I-5 (milepost 66.5) will close nightly for bridge repairs.”
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I-405 will see multiple closures.“405: The left express toll lane of northbound I-405 between Northeast 160th Street (milepost 22.61) and SR 527 (milepost 27.1) will be closed nightly from 8:30 p.m. Monday, August 17 to 5 a.m. Friday, August 21.”
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The left express toll lane northbound between Northeast 160th Street and SR 527 will close nightly from 8:30 p.m. Monday to 5 a.m. Friday.“405: The left express toll lane of northbound I-405 between Northeast 160th Street (milepost 22.61) and SR 527 (milepost 27.1) will be closed nightly from 8:30 p.m. Monday, August 17 to 5 a.m. Friday, August 21.”
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Up to three southbound lanes between Coal Creek Parkway and milepost 7 will close nightly from 10:30 p.m. Monday to 5:30 a.m. Wednesday.“Up to three lanes of southbound I-405 from Coal Creek Parkway Southeast (milepost 9.5) to milepost 7 will be closed nightly, 10:30 p.m. Monday, Aug. 17 – 5:30 a.m. Wednesday, Aug. 19.”
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SR 508 will have alternating traffic with flaggers starting August 18.“508: Construction on SR 508 both directions from milepost 22.68 near Alder Creek to milepost 22.89 near Alder Creek will be alternating traffic with flaggers. Use caution when approaching the area, beginning at 8:32 am on August 18, 2026 until further notice.”
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SR 9 will remain closed south of Mount Vernon Big Lake Road until 6 a.m. Wednesday for a fish passage project.“Both directions of SR 9 are closed until 6 a.m. Wednesday, Aug. 19, south of Mount Vernon Big Lake Road (milepost 49) to install a fish passage.”