← The Centralia Wire

Infrastructure

I-5 and SR 6 Work Planned Through September

Wednesday, September 16, 2026

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The Washington State Department of Transportation (WSDOT) has announced several road closures and lane restrictions for construction and repairs on I-5 and SR 6 near Centralia–Chehalis, effective this week.

Nightly closures on southbound I-5 between milepost 83 and Mellen Street will run from 8 p.m. Sunday through 6 a.m. Wednesday, Sept. 16, for guardrail repairs. The Harrison Avenue on-ramp to southbound I-5 will also close during these times. A separate project will close the right lane of southbound I-5 near milepost 88 on Sept. 21 for guardrail work. Meanwhile, a paving project near Grand Mound will cause overnight double-lane closures on I-5 between Maytown Road and Old Highway 99 through Sept. 25.

On SR 6, alternating traffic with flaggers will begin at 6:28 a.m. Sept. 15 at milepost 45.7 near Curtis Hill Road. A water main replacement project will cause single-lane traffic on SR 6 between Clinton Road and Twin Oaks Road weekdays from 7 a.m. to 3:30 p.m. through Oct. 12. Tree trimming work on westbound SR 6 between Rainbow Falls State Park and Hope Creek Road will also require single-lane traffic daily from 7 a.m. to 5:30 p.m. through Sept. 30.

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

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The Washington State Department of Transportation (WSDOT) has announced several road closures and lane restrictions for construction and repairs on I-5 and SR 6 near Centralia–Chehalis“WSDOT highway construction and road closures within 50 miles of Centralia–Chehalis — 9/15/2026:”
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The road closures and lane restrictions are effective this weekNo usable supporting receipt — unverified.
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Nightly closures on southbound I-5 between milepost 83 and Mellen Street will run from 8 p.m. Sunday through 6 a.m. Wednesday“From 8 p.m., Sunday, Sept. 13 to 6 a.m., Wednesday, Sept. 16: The right lane of southbound I-5 between milepost 83 and Mellen Street (milepost 81.7) will close nightly for guardrail repair work.”
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The closures on southbound I-5 between milepost 83 and Mellen Street are scheduled for Sept. 16No usable supporting receipt — unverified.
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The Harrison Avenue on-ramp to southbound I-5 will also close during these timesNo usable supporting receipt — unverified.
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A separate project will close the right lane of southbound I-5 near milepost 88 on Sept. 21 for guardrail work“005 [6 mi from Centralia–Chehalis]: From 9 a.m. to 3 p.m. Monday, Sept. 21, the right lane of southbound I-5 will close near milepost 88 south of Grand Mound for guardrail repairs.”
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A paving project near Grand Mound will cause overnight double-lane closures on I-5 between Maytown Road and Old Highway 99“Expect overnight double-lane and ramp closures in both directions of I-5 Monday through Friday between Maytown Rd and Old Hwy 99 for a paving project near Grand Mound. Work wraps up in October.”
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The overnight double-lane closures on I-5 between Maytown Road and Old Highway 99 will run through Sept. 25“005 [7 mi from Centralia–Chehalis]: Expect overnight double-lane and ramp closures in both directions of I-5 Monday through Friday between Maytown Rd and Old Hwy 99 for a paving project near Grand Mound. Work wraps up in October. Effective: Sep 10, 2026, 2:00 PM Expected end: Sep 25, 2026, 8:00 PM”
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Alternating traffic with flaggers will begin at 6:28 a.m. Sept. 15 at milepost 45.7 near Curtis Hill Road on SR 6“006 [9 mi from Centralia–Chehalis]: Construction on SR 6 both directions at milepost 45.7 near Curtis Hill Road will be alternating traffic with flaggers, use caution beginning at 6:28 am on September 15, 2026 until further notice.”
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A water main replacement project will cause single-lane traffic on SR 6 between Clinton Road and Twin Oaks Road weekdays from 7 a.m. to 3:30 p.m.“Monday, Sept. 14 through Monday, Oct. 12: 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.”
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The single-lane traffic on SR 6 between Clinton Road and Twin Oaks Road will run through Oct. 12“Monday, Sept. 14 through Monday, Oct. 12: 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.”
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Tree trimming work on westbound SR 6 between Rainbow Falls State Park and Hope Creek Road will also require single-lane traffic daily from 7 a.m. to 5:30 p.m.“Monday, Sept. 14 through Wednesday, Sept. 30: Travelers along westbound SR 6 between Rainbow Falls State Park (milepost 35.2) and Hope Creek Road (milepost 36.8) will take turns moving through a single lane daily from 7 a.m. to 5:30 p.m., for tree trimming work.”
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The single-lane traffic on westbound SR 6 between Rainbow Falls State Park and Hope Creek Road will run through Sept. 30“006 [14 mi from Centralia–Chehalis]: Monday, Sept. 14 through Wednesday, Sept. 30: Travelers along westbound SR 6 between Rainbow Falls State Park (milepost 35.2) and Hope Creek Road (milepost 36.8) will take turns moving through a single lane daily from 7 a.m. to 5:30 p.m., for tree trimming work. Flaggers will direct travelers through the area. Plan ahead and expect delays.”