Infrastructure

SR 9 Fish Passage Work Causes Lane Reductions

Monday, August 24, 2026

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State Route 9 near Kalloch Road (MP 59) will operate with a single lane and alternating traffic through a bypass road from August 3 to September 14 for fish passage construction. A second project will alternate traffic from 10 a.m. to 4 p.m. on weekdays near Mount Vernon Big Lake Road (MP 49) from August 21 to September 3.

WSDOT states delays are expected during these closures. The fish passage project aims to improve habitat for salmon and other fish species. Drivers should plan for extended travel times during the work periods.

Additional roadwork includes I-5 and I-405 maintenance in the Seattle area, but the Olympic Peninsula focus remains on the SR 9 fish passage projects.

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

Source receipts4 of 9 claims supported · 44%

Legacy automated check: the original source text was not preserved. These earlier verdicts have not passed the current publication checks and may contain errors. Source: original document ↗

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State Route 9 near Kalloch Road (MP 59) will operate with a single lane and alternating traffic through a bypass road“009: SR 9 is reduced to a single lane near Kalloch Road (MP 59) with a signal alternating northbound and southbound traffic through a bypass road for 42 days, until Sept. 14 for fish passage construction.”
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The single lane and alternating traffic operation on State Route 9 near Kalloch Road (MP 59) will be from August 3 to September 14“009: SR 9 is reduced to a single lane near Kalloch Road (MP 59) with a signal alternating northbound and southbound traffic through a bypass road for 42 days, until Sept. 14 for fish passage construction. Expect delays in the area.”
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A second project will alternate traffic from 10 a.m. to 4 p.m. on weekdays near Mount Vernon Big Lake Road (MP 49)“009: Northbound and southbound traffic will alternate from 10 a.m. to 4 p.m. daily Mondays through Thursday through Thursday, Sept. 3, just south of Mount Vernon Big Lake Road (milepost 49) for fish passage construction. Expect delays in the area.”
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The second project's traffic alternation near Mount Vernon Big Lake Road (MP 49) will be from August 21 to September 3No usable supporting receipt — unverified.
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WSDOT states delays are expected during these closures“Expect delays in the area.”
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The fish passage project aims to improve habitat for salmon and other fish speciesNo usable supporting receipt — unverified.
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Drivers should plan for extended travel times during the work periodsNo usable supporting receipt — unverified.
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Additional roadwork includes I-5 and I-405 maintenance in the Seattle areaNo usable supporting receipt — unverified.
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The Olympic Peninsula focus remains on the SR 9 fish passage projectsNo usable supporting receipt — unverified.