I-5, SR 507, SR 302 roadwork updates

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  WSDOT announced several road construction and maintenance projects affecting Centralia–Chehalis area highways“WSDOT highway construction and road closures within 50 miles of Centralia–Chehalis — 9/10/2026:”
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  The road construction and maintenance projects start this weekNo usable supporting receipt — unverified.
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  Overnight double-lane closures on I-5 near Grand Mound begin Monday“Expect overnight double-lane and ramp closures in both directions of I-5 Monday through Friday between Maytown Rd and Old Hwy 99 for a paving project near Grand Mound.”
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  The overnight double-lane closures on I-5 near Grand Mound continue through Sept. 25“Expect overnight double-lane and ramp closures in both directions of I-5 Monday through Friday between Maytown Rd and Old Hwy 99 for a paving project near Grand Mound. Work wraps up in October.”
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  The project includes pavement work between Maytown Road and Old Highway 99“Expect overnight double-lane and ramp closures in both directions of I-5 Monday through Friday between Maytown Rd and Old Hwy 99 for a <a href="https://wsdot.wa.gov/construction-planning/search-projects/i-5-old-highway-99-maytown-road-paving">paving project</a> near Grand Mound.”
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  Additional closures include a southbound I-5 exit closure in OlympiaNo usable supporting receipt — unverified.
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  The southbound I-5 exit closure in Olympia is from 8 a.m. to 3:30 p.m. on Sept. 13“From 8 a.m. to 3:30 p.m. Sunday, Sept. 13, southbound I-5 exit 103 to 2nd Avenue in Olympia will close for maintenance.”
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  A ramp closure on US 101 to I-5 in Olympia occurs during the same hoursNo usable supporting receipt — unverified.
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  The ramp closure on US 101 to I-5 in Olympia occurs on Sept. 13“101 [21 mi from Centralia–Chehalis]: From 8 a.m. to 3:30 p.m. Sunday, Sept. 13, the ramp from southbound US 101 to southbound I-5 and 2nd Avenue in Olympia will close for maintenance. <a href="https://content.govdelivery.com/accounts/WADOT/bulletins/4299613">Read the travel advisory</a>.”
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  A one-way alternating traffic schedule on SR 507 near Spanaway occurs through Sept. 14“507 [34 mi from Centralia–Chehalis]: Expect one-way alternating traffic around the clock on SR 507 at 208th Street South near Spanaway for a roundabout project. The contractor has one crew working between two roundabout sites. Travelers may not see crews working every day at both sites. Effective: Sep 8, 2026, 9:55 AM Expected end: Sep 14, 2026, 7:00 AM”
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  The SR 302 safety enhancement project permanently closes the right lane on southbound SR 302“From 8:30 a.m. to 4 p.m. Wednesday, Sept. 16, and Thursday, Sept. 17, crews will begin work to permanently close the right lane of southbound SR 302 between the Purdy Bay Bridge and Burnham Drive Northwest. The work is part of planned safety enhancements along the roadway.”
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  The right lane closure on southbound SR 302 is from 8:30 a.m. to 4 p.m. on Sept. 16-17“From 8:30 a.m. to 4 p.m. Wednesday, Sept. 16, and Thursday, Sept. 17, crews will begin work to permanently close the right lane of southbound SR 302 between the Purdy Bay Bridge and Burnham Drive Northwest. The work is part of planned safety enhancements along the roadway.”
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  All projects are scheduled to end by Sept. 26No usable supporting receipt — unverified.
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  Most projects are scheduled to end this weekNo usable supporting receipt — unverified.
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  WSDOT advises drivers to expect delays“Expect overnight double-lane and ramp closures in both directions of I-5 Monday through Friday between Maytown Rd and Old Hwy 99 for a paving project near Grand Mound. Work wraps up in October.”
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  WSDOT advises drivers to follow all detour signs and flagger instructions during work hoursNo usable supporting receipt — unverified.