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WSDOT announced multiple road closures and lane reductions starting this week for maintenance and safety projects in Pierce County“WSDOT highway construction and road closures within 50 miles of Tacoma — 9/11/2026:”
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The closures include SR 302“302 [12 mi from Tacoma]: 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 closures include SR 507“507 [13 mi from Tacoma]: 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 <a href="https://wsdot.wa.gov/construction-planning/search-projects/sr-702-harts-lake-road-sr-507-208th-street-roundabouts">two roundabout sites</a>. Travelers may not see crews working every day at both sites.”
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The closures include SR 599“599 [18 mi from Tacoma]: From 10 p.m. Thursday, Sept. 10 to 5 a.m. Friday, Sept. 11 the left lane of northbound State Route 599 will close at Interstate 5 (milepost 0) for maintenance.”
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The closures include SR 167“405 [18 mi from Tacoma]: The northbound SR 167 on-ramp to southbound I-405 will be closed overnight, 11:59 p.m. Friday, Sept. 11 – 5 a.m. Saturday, Sept. 12. A signed detour will be in place.”
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The closures include SR 515“515 [19 mi from Tacoma]: From noon to 3 p.m. Tuesday, Sept. 8 and daily from 9 a.m. to 3 p.m. (except Saturday, Sunday) beginning Wednesday, Sept. 9 to 3 p.m. Friday, Sept. 18, the right lane of southbound State Route 515 from the Interstate 405 interchange to South Puget Drive (milepost 6) will close. The sidewalk in this area will also close.”
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The closures include I-405“405 [18 mi from Tacoma]: The northbound SR 167 on-ramp to southbound I-405 will be closed overnight, 11:59 p.m. Friday, Sept. 11 – 5 a.m. Saturday, Sept. 12. A signed detour will be in place.”
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The changes affect drivers traveling through Gig HarborNo usable supporting receipt — unverified.
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The changes affect drivers traveling through SpanawayNo usable supporting receipt — unverified.
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The changes affect drivers traveling through TacomaNo usable supporting receipt — unverified.
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Crews will permanently close the right lane of southbound SR 302 between the Purdy Bay Bridge and Burnham Drive Northwest 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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SR 507 will have one-way alternating traffic at 208th Street South near Spanaway through Sept. 14“507 [13 mi from Tacoma]: 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 northbound SR 599 lane closure at I-5 is scheduled for Sept. 10-11“From 10 p.m. Thursday, Sept. 10 to 5 a.m. Friday, Sept. 11 the left lane of northbound State Route 599 will close at Interstate 5 (milepost 0) for maintenance.”
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Other closures include overnight work on I-405 ramps and lanes from Sept. 11-12“The northbound SR 167 on-ramp to southbound I-405 will be closed overnight, 11:59 p.m. Friday, Sept. 11 – 5 a.m. Saturday, Sept. 12. A signed detour will be in place.
Effective: Sep 11, 2026, 12:00 AM
Expected end: Sep 12, 2026, 5:00 AM
405 [20 mi from Tacoma]: The southbound I-405 off-ramp to North Southport Drive will be closed overnight, 10 p.m. Friday, Sept. 11 – 7 a.m. Saturday, Sept 12. A signed detour will be in place.
Effective: Sep 11, 2026, 12:00 AM
Expected end: Sep 12, 2026, 7:00 AM
405 [21 mi from Tacoma]: Up to two lanes of southbound I-405 from North Southport Drive (milepost 6) to Talbot Road South / SR 515 (milepost 3.15) will be closed overnight, 11 p.m. Friday, Sept. 11 – 7 a.m. Saturday, Sept. 12.”
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Other closures include lane closures on SR 515 through Sept. 18“515 [19 mi from Tacoma]: From noon to 3 p.m. Tuesday, Sept. 8 and daily from 9 a.m. to 3 p.m. (except Saturday, Sunday) beginning Wednesday, Sept. 9 to 3 p.m. Friday, Sept. 18, the right lane of southbound State Route 515 from the Interstate 405 interchange to South Puget Drive (milepost 6) will close. The sidewalk in this area will also close.”
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Drivers should plan for delays and follow posted detoursNo usable supporting receipt — unverified.
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WSDOT advises travelers to check for real-time updates via WSDOT's website or 511 before travelingNo usable supporting receipt — unverified.