Infrastructure

Tri-Cities roadwork continues through September

Friday, September 4, 2026

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Multiple Washington State Department of Transportation (WSDOT) projects affecting Tri-Cities area highways will continue through mid-September, according to public records.

SR 730 between US 12 and the Oregon state line will have flagger-controlled alternating traffic Monday through Friday from 6 a.m. to 6 p.m. until September 18. Chip seal work on SR 240, SR 014, and SR 241 will end September 4, with alternating traffic Monday through Friday from 5 a.m. to 5 p.m. SR 124 will remain closed between Bolles Road and Coppei Ave until September 18 for environmental remediation.

Drivers should expect delays and backups during work hours. WSDOT advises following posted detour routes for the SR 124 closure. The environmental remediation work on SR 124 is expected to end September 18 at 10 p.m.

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

Source receipts7 of 9 claims supported · 78%

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Multiple Washington State Department of Transportation (WSDOT) projects affecting Tri-Cities area highways will continue through mid-SeptemberNo usable supporting receipt — unverified.
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SR 730 between US 12 and the Oregon state line will have flagger-controlled alternating traffic Monday through Friday from 6 a.m. to 6 p.m.“730 [16 mi from Tri-Cities]: SR 730 between the Jct. of US 12 and the Oregon State Line milepost 0 to 6: Monday through Friday from 6 a.m. to 6 p.m. until further notice, there will be flagger and pilot vehicle controlled alternating traffic for roadwork.”
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The flagger-controlled alternating traffic on SR 730 will continue until September 18“730 [16 mi from Tri-Cities]: SR 730 between the Jct. of US 12 and the Oregon State Line milepost 0 to 6: Monday through Friday from 6 a.m. to 6 p.m. until further notice, there will be flagger and pilot vehicle controlled alternating traffic for roadwork. Effective: Jun 7, 2026, 9:48 PM Expected end: Sep 18, 2026, 6:00 PM”
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Chip seal work on SR 240, SR 014, and SR 231 will end September 4No usable supporting receipt — unverified.
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Alternating traffic on SR 240, SR 014, and SR 241 will be Monday through Friday from 5 a.m. to 5 p.m.“Both directions milepost 8 to 28 in Richland. Monday through Friday from 6 a.m. to 6 p.m. daily there will be flagger or pilot vehicle controlled alternating traffic for chip seal work.”
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SR 124 will remain closed between Bolles Road and Coppei Ave until September 18 for environmental remediation“Until September 18 both directions SR-124 from Bolles Road (milepost 41) to Coppei Ave (milepost 45) in Waitsburg will be closed due for environmental remediation work. Follow posted detour routes. City roads will remain open to local traffic.”
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Drivers should expect delays and backups during work hours“Drivers should expect backups and delays through the work zone.”
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WSDOT advises following posted detour routes for the SR 124 closure“Until September 18 both directions SR-124 from Bolles Road (milepost 41) to Coppei Ave (milepost 45) in Waitsburg will be closed due for environmental remediation work. Follow posted detour routes. City roads will remain open to local traffic.”
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The environmental remediation work on SR 124 is expected to end September 18 at 10 p.m.“Expected end: Sep 18, 2026, 10:00 PM”