Infrastructure

I-405, SR 20 closures this week

Saturday, August 29, 2026

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I-405 will close up to two southbound lanes from milepost 12 to Coal Creek Parkway Southeast overnight Thursday, Sept. 3 to Friday, Sept. 4. The closure will affect drivers traveling toward downtown Bremerton.

State Route 20 will have alternating traffic with flaggers from Swin Slough Bridge to Laconner Whitney Road/Bay View Road starting Aug. 21 through September. SR 4 will have a single lane closure weekdays from 7:30 a.m. to 5 p.m. between 50th and 42nd Avenues until Sept. 11. I-5 will have single-lane reductions nightly near Alger/Lake Samish Road from Aug. 31 through Sept. 4.

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

Source receipts9 of 11 claims supported · 82%

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I-405 will close up to two southbound lanes from milepost 12 to Coal Creek Parkway Southeast“405: Up to two lanes of southbound I-405 from milepost 12 to Coal Creek Parkway Southeast (milepost 10) will be closed overnight, 9 p.m. Thursday, Sept. 3 – 5 a.m. Friday, Sept. 4.”
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The closure will affect drivers traveling toward downtown BremertonNo usable supporting receipt — unverified.
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The closure will happen overnight Thursday, Sept. 3 to Friday, Sept. 4“405: Up to two lanes of southbound I-405 from milepost 12 to Coal Creek Parkway Southeast (milepost 10) will be closed overnight, 9 p.m. Thursday, Sept. 3 – 5 a.m. Friday, Sept. 4.”
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State Route 20 will have alternating traffic with flaggers from Swin Slough Bridge to Laconner Whitney Road/Bay View Road“020: Daily (except Saturday, Sunday) beginning Aug. 21 until further notice: State Route 20 traffic will alternate with flaggers from the Swin Slough Bridge (milepost 50) to Laconner Whitney Road/Bay View Road (milepost 53) for city Anacortes utilities work.”
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SR 20 will have alternating traffic starting Aug. 21“020: Daily (except Saturday, Sunday) beginning Aug. 21 until further notice: State Route 20 traffic will alternate with flaggers from the Swin Slough Bridge (milepost 50) to Laconner Whitney Road/Bay View Road (milepost 53) for city Anacortes utilities work.”
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SR 20 will have alternating traffic through SeptemberNo usable supporting receipt — unverified.
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SR 4 will have a single lane closure weekdays from 7:30 a.m. to 5 p.m.“004: Monday, Aug. 17 through Friday, Sept. 11: A single lane in both directions of SR 4 between 50th Avenue (milepost 56.4) and 42nd Avenue (milepost 57.2) will be closed weekdays from 7:30 a.m. to 5 p.m., for buried gas main line extension work.”
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SR 4 will have a single lane closure between 50th and 42nd Avenues“004: Monday, Aug. 17 through Friday, Sept. 11: A single lane in both directions of SR 4 between 50th Avenue (milepost 56.4) and 42nd Avenue (milepost 57.2) will be closed weekdays from 7:30 a.m. to 5 p.m., for buried gas main line extension work.”
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SR 4 will have a single lane closure until Sept. 11“004: Monday, Aug. 17 through Friday, Sept. 11: A single lane in both directions of SR 4 between 50th Avenue (milepost 56.4) and 42nd Avenue (milepost 57.2) will be closed weekdays from 7:30 a.m. to 5 p.m., for buried gas main line extension work.”
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I-5 will have single-lane reductions nightly near Alger/Lake Samish Road“005: The northbound and southbound I-5 will be reduced to a single lane from 8 p.m. to 5 a.m. nightly Monday, Aug. 31, through Friday morning, Sept. 4, near Alger/Lake Samish Road (exit 240) for fish passage construction.”
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I-5 will have single-lane reductions from Aug. 31 through Sept. 4“005: The northbound and southbound I-5 will be reduced to a single lane from 8 p.m. to 5 a.m. nightly Monday, Aug. 31, through Friday morning, Sept. 4, near Alger/Lake Samish Road (exit 240) for fish passage construction.”