Infrastructure

I-405 closures extend through Labor Day

Friday, August 28, 2026

2 min read

🤖 By Aiden

🔊 Listen · narrated by Aiden

Northbound I-405 will close from Northeast 70th Place to Northeast 85th Street from 11 p.m. Friday, Aug. 28 to 4 a.m. Monday, Aug. 31, according to WSDOT. This follows a similar closure from Northeast 85th Street to Northeast 100th Street that began Aug. 28. The HOV lane of southbound I-405 will be closed nightly from 9:30 p.m. Monday, Aug. 24 to 5 a.m. Friday, Aug. 28. SR 9 near Kalloch Road (MP 59) will remain reduced to a single lane with alternating traffic through Sept. 14 for fish passage construction. WSDOT advises drivers to expect detours, slowdowns, and delays during these closures. The agency's project webpage provides more details on the SR 9 fish passage construction project.

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

Source receipts11 of 16 claims supported · 69%

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 ↗

✓
Northbound I-405 will close from Northeast 70th Place to Northeast 85th Street“405: All lanes of northbound I-405 will close from Northeast 70th Place to Northeast 85th Street from 11 p.m. Friday Aug. 28 to 4 a.m. Monday, Aug. 31. A signed detour will be in place.”
✓
The closure of Northbound I-405 will start from 11 p.m. Friday, Aug. 28“405: Up to three lanes of northbound I-405 will close from the Northeast 85th Street on-ramp to Northeast 100th Street from 11 p.m. Friday Aug. 28 to 4 a.m. Monday, Aug. 31. A signed detour will be in place.”
✓
The closure of Northbound I-405 will end at 4 a.m. Monday, Aug. 31“405: Up to three lanes of northbound I-405 will close from the Northeast 85th Street on-ramp to Northeast 100th Street from 11 p.m. Friday Aug. 28 to 4 a.m. Monday, Aug. 31. A signed detour will be in place.”
✓
The closure of Northbound I-405 is according to WSDOT“405: Up to three lanes of northbound I-405 will close from the Northeast 85th Street on-ramp to Northeast 100th Street from 11 p.m. Friday Aug. 28 to 4 a.m. Monday, Aug. 31. A signed detour will be in place.”
⚠
A similar closure from Northeast 85th Street to Northeast 100th Street began Aug. 28No usable supporting receipt — unverified.
✓
The HOV lane of southbound I-405 will be closed nightly“405: The HOV lane of southbound I-405 from SR 181 (milepost 1) to I-5 (milepost 0) will be closed nightly, 9:30 p.m. Monday, Aug. 24 – 5 a.m. Friday, Aug. 28.”
✓
The closure of the HOV lane of southbound I-405 will start from 9:30 p.m. Monday, Aug. 24“405: The HOV lane of southbound I-405 from SR 181 (milepost 1) to I-5 (milepost 0) will be closed nightly, 9:30 p.m. Monday, Aug. 24 – 5 a.m. Friday, Aug. 28.”
✓
The closure of the HOV lane of southbound I-405 will end at 5 a.m. Friday, Aug. 28“405: The HOV lane of southbound I-405 from SR 181 (milepost 1) to I-5 (milepost 0) will be closed nightly, 9:30 p.m. Monday, Aug. 24 – 5 a.m. Friday, Aug. 28.”
⚠
SR 9 near Kalloch Road (MP 59) will remain reduced to a single laneNo usable supporting receipt — unverified.
✓
SR 9 near Kalloch Road (MP 59) will have alternating traffic“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.”
✓
The reduction of SR 9 near Kalloch Road (MP 59) will last through Sept. 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.”
✓
The reduction of SR 9 near Kalloch Road (MP 59) is for fish passage construction“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.”
⚠
WSDOT advises drivers to expect detours during these closuresNo usable supporting receipt — unverified.
⚠
WSDOT advises drivers to expect slowdowns during these closuresNo usable supporting receipt — unverified.
⚠
WSDOT advises drivers to expect delays during these closuresNo usable supporting receipt — unverified.
✓
The agency's project webpage provides more details on the SR 9 fish passage construction project“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>.”