Work to replace a buried water main line on SR 6 begins Monday, Sept. 14, and will continue through Friday, Oct. 16. The project will affect both directions of travel between Clinton Road (milepost 45.6) and Twin Oaks Road (milepost 46.5).
Flaggers will direct traffic through the work zone during weekdays from 7 a.m. to 3:30 p.m. Travelers should plan ahead for delays during these hours.
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WSDOT highway construction and road closures within 50 miles of Centralia–Chehalis — 10/8/2026: 006 [9 mi from Centralia–Chehalis]: Monday, Sept. 14 through Friday, Oct. 16: Travelers in both directions of SR 6 will take turns moving through a single lane between Clinton Road (milepost 45.6) and Twin Oaks Road (milepost 46.5), weekdays from 7 a.m. to 3:30 p.m., for work to replace a buried water main line. Flaggers will direct travelers through the work zone. Plan ahead and expect delays. This work is being done by Boistfort Valley Water Corporation. Effective: Sep 14, 2026, 5:00 AM Expected end: Oct 16, 2026, 3:30 PM 005 [22 mi from Centralia–Chehalis]: Construction will have the middle and right lanes closed on I-5 from milepost 58.5 near Exit 59 / Cowlitz River to milepost 60.9 near SR 506, and the 506 offramp closed. Use caution and plan alternate routes beginning at 5:57 pm on October 8, 2026 until further notice. Effective: Oct 8, 2026, 5:57 PM 004 [38 mi from Centralia–Chehalis]: Monday, Aug. 17 through Monday, Oct. 12: Travelers in both directions of SR 4 will take turns moving through a single lane between 50th Avenue (milepost 56.4) and 42nd Avenue (milepost 57.2), weekdays from 7:30 a.m. to 5 p.m., for buried gas line extension work. Flaggers will direction travelers through the area. Plan ahead and expect delays. Effective: Aug 17, 2026, 5:00 AM Expected end: Oct 12, 2026, 5:00 PM 512 [39 mi from Centralia–Chehalis]: Expect overnight ramp work on the SR 7 on-ramp to eastbound SR 512: -9 p.m. Sunday to 6 a.m. Monday -8 p.m. to 6 a.m., Monday through Wednesday -8:30 p.m. Thursday to 6 a.m. Friday -7:30 p.m. Friday to 9 a.m. Saturday -8:30 p.m. Saturday to 9:30 a.m. Sunday Read more about the improvements on the project webpage. Effective: Sep 15, 2026, 11:46 AM Expected end: Oct 30, 2026, 8:30 PM 706 [46 mi from Centralia–Chehalis]: From 9 p.m. Friday, Oct. 16, until 6 a.m. Saturday, Oct. 17, SR 706 will close between milepost 10.2 near Kernahan Road East and milepost 12.8 near Murray Road East. During the overnight closure there will be no access to the Nisqually Entrance of Mount Rainier National Park from SR 706. Read the news release. Effective: Oct 7, 2026, 2:49 PM Expected end: Oct 16, 2026, 8:00 PM
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