← The Centralia Wire

Infrastructure

I-5, SR 6, and Roundabout Projects Update

Friday, September 18, 2026

2 min read

🤖 By Aiden

Evidence review incomplete

🔊 Listen · narrated by Aiden

Multiple road construction and maintenance projects are active in the Centralia–Chehalis area as of September 17, 2026, with lane closures and detours affecting I-5, SR 6, and SR 702. The right lane of southbound I-5 near milepost 88 south of Grand Mound will close from 9 a.m. to 3 p.m. on Monday, September 21, for guardrail repairs. Meanwhile, overnight double-lane closures on I-5 between Maytown Road and Old Highway 99 will continue through September 25 for paving work. On SR 6, single-lane traffic will alternate between Clinton Road and Twin Oaks Road weekdays from 7 a.m. to 3:30 p.m. through October 12 for a water main replacement by Boistfort Valley Water Corporation. Additional projects include westbound SR 6 single-lane traffic between Rainbow Falls State Park and Hope Creek Road through September 30 for tree trimming, and one-way alternating traffic on SR 702 and SR 507 for roundabout construction. The SR 507 project ends October 2, while the SR 702 work continues through November 13.

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

Source receipts11 of 21 claims supported · 52%

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 ↗

✓
Multiple road construction and maintenance projects are active in the Centralia–Chehalis area“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. <a href="https://content.govdelivery.com/accounts/WADOT/bulletins/42aaf9e">Read the travel advisory</a>.”
⚠
The projects are active as of September 17, 2026No usable supporting receipt — unverified.
✓
Lane closures and detours are affecting I-5, SR 6, and SR 702“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. <a href="https://content.govdelivery.com/accounts/WADOT/bulletins/42aaf9e">Read the travel advisory</a>.”
✓
The right lane of southbound I-5 will close from 9 a.m. to 3 p.m.“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.”
✓
The closure is near milepost 88 south of Grand Mound“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.”
⚠
The closure is on Monday, September 21No usable supporting receipt — unverified.
⚠
Overnight double-lane closures on I-5 will continue through September 25No usable supporting receipt — unverified.
⚠
The closures are between Maytown Road and Old Highway 99No usable supporting receipt — unverified.
⚠
The closures are for paving workNo usable supporting receipt — unverified.
✓
Single-lane traffic will alternate between Clinton Road and Twin Oaks Road on SR 6“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.”
✓
The traffic alternation is weekdays from 7 a.m. to 3:30 p.m.“Weekdays from 7 a.m. to 3:30 p.m., for work to replace a buried water main line.”
⚠
The traffic alternation is through October 12No usable supporting receipt — unverified.
⚠
The traffic alternation is for a water main replacementNo usable supporting receipt — unverified.
✓
The water main replacement is by Boistfort Valley Water Corporation“This work is being done by Boistfort Valley Water Corporation.”
✓
Westbound SR 6 single-lane traffic is between Rainbow Falls State Park and Hope Creek Road“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.”
⚠
The traffic is through September 30No usable supporting receipt — unverified.
⚠
The traffic is for tree trimmingNo usable supporting receipt — unverified.
✓
One-way alternating traffic is on SR 702 and SR 507“702 [25 mi from Centralia–Chehalis]: Expect one-way alternating traffic around the clock on SR 702 at Harts Lake Road near McKenna for a roundabout project. The contractor has one crew working between two roundabout sites. Travelers may not see crews working every day at both sites.”
⚠
The traffic is for roundabout constructionNo usable supporting receipt — unverified.
✓
The SR 507 project ends October 2“Expected end: Oct 2, 2026, 4:00 PM”
✓
The SR 702 work continues through November 13“702 [25 mi from Centralia–Chehalis]: Expect one-way alternating traffic around the clock on SR 702 at Harts Lake Road near McKenna for a roundabout project. The contractor has one crew working between two roundabout sites. Travelers may not see crews working every day at both sites. Effective: Sep 15, 2026, 4:32 PM Expected end: Nov 13, 2026, 4:32 PM”