I-405, I-90 Closures Continue Through Labor Day Weekend

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  WSDOT announced overnight lane closures on I-405 and I-90 in EllensburgNo usable supporting receipt — unverified.
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  The lane closures are effective Thursday, Sept. 3 through Friday, Sept. 4No usable supporting receipt — unverified.
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  Two lanes of southbound I-405 from milepost 12 to Coal Creek Parkway Southeast will close“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 two lanes of southbound I-405 will be from 9 p.m. Thursday to 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.”
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  Northbound I-405 will have 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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  Northbound I-405 will have lane closures nightly from milepost 11.5 to 13.7“405: Up to four lanes of northbound I-405 from milepost 11.5 to milepost 13.7 will be closed nightly, 9:30 p.m. Monday, Aug. 31 – 4:30 a.m. Friday, Sept. 4.”
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  The lane closures on Northbound I-405 will be from 9 p.m. Monday through Friday morningNo usable supporting receipt — unverified.
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  The eastbound I-90 off-ramp to Factoria Boulevard will also close nightlyNo usable supporting receipt — unverified.
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  The eastbound I-90 off-ramp closure to Factoria Boulevard will be from 9 p.m. Monday to 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.”
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  These closures are part of ongoing construction projects including utility work on State Route 20No usable supporting receipt — unverified.
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  These closures are part of ongoing construction projects including fish passage construction on SR 9 and I-5“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 52 days, until Sept. 24 for fish passage construction. Expect delays in the area. More information on the <a href=""https://wsdot.wa.gov/construction-planning/search-projects/sr-9-unnamed-tributaries-nookachamps-hansen-creeks-fish-passage"">project webpage</a>.”
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  The I-90 off-ramp closure will be detoured“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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  Drivers should expect delays due to the I-90 off-ramp closure“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 closures are scheduled to end on Sept. 4, 2026“Effective: Aug 31, 2026, 9:00 PM Expected end: Sep 4, 2026, 4:30 AM”
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  Some projects are scheduled to extend through September 24“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 52 days, until Sept. 24 for fish passage construction. Expect delays in the area.”