I-405, I-90 Closures Continue Through Weekend

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  Multiple Washington State Department of Transportation (WSDOT) projects will close lanes on I-405 and I-90 in Tacoma this weekNo usable supporting receipt — unverified.
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  Some closures will extend through Monday morningNo usable supporting receipt — unverified.
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  I-405 southbound will close 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 of I-405 southbound will start at 9 p.m. Thursday“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 of I-405 southbound will end at 5 a.m. Friday“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. Effective: Aug 3, 2026, 12:00 AM Expected end: Sep 4, 2026, 5:00 AM”
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  I-405 northbound will have two lane closures nightly from milepost 7 to 8.5“405: Up to two lanes of northbound I-405 from milepost 7 to milepost 8.5 will be closed nightly, 9 p.m. Monday, Aug. 31 – 4:30 a.m. Friday, Sept. 4.”
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  The closure of I-405 northbound will start at 9 p.m. MondayNo usable supporting receipt — unverified.
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  The closure of I-405 northbound will end at 4:30 a.m. Friday“405: Up to two lanes of northbound I-405 from milepost 7 to milepost 8.5 will be closed nightly, 9 p.m. Monday, Aug. 31 – 4:30 a.m. Friday, Sept. 4.”
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  I-90 eastbound off-ramp to Factoria Boulevard will close nightly“090: The eastbound I-90 off-ramp to Factoria Boulevard will be closed nightly, 9 p.m. Monday, Aug. 31 – 5 a.m. Friday, Sept. 4. A signed detour will be in place.”
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  The closure of I-90 eastbound off-ramp to Factoria Boulevard will start at 9 p.m. Monday“090: The eastbound I-90 off-ramp to Factoria Boulevard will be closed nightly, 9 p.m. Monday, Aug. 31 – 5 a.m. Friday, Sept. 4. A signed detour will be in place.”
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  The closure of I-90 eastbound off-ramp to Factoria Boulevard will end at 5 a.m. Friday“090: The eastbound I-90 off-ramp to Factoria Boulevard will be closed nightly, 9 p.m. Monday, Aug. 31 – 5 a.m. Friday, Sept. 4. A signed detour will be in place.”
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  WSDOT's construction schedule shows these closures are part of ongoing work to improve infrastructureNo usable supporting receipt — unverified.
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  Drivers should expect delays and follow detour signsNo usable supporting receipt — unverified.
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  The closures will end by 5 a.m. FridayNo usable supporting receipt — unverified.
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  Some work will continue on State Route 20 and SR 9 through mid-September“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.”