Construction ongoing on US 101 southbound as it joins I-5

Neighbors might hear the grinding of asphalt at night


Southbound US 101 as well as the highway’s onramp to northbound I-5  will undergo construction from May to September.

According to the Washington State Department of Transportation (WSDOT), the southbound road between Mud Bay and US 101 in Olympia will undergo repairs while safety improvements will be done from the southbound onramp of US 101 to northbound I5.

“Nearby residential areas may experience nighttime noise,” explained Tumwater authorities in a separate press release. “Asphalt grinding is unavoidably loud, and crews will work as quickly as possible to complete the work.”

WSDOT announced that it will be removing and replacing asphalt on the left lane of southbound US 101 between Mud Bay Road and Crosby Boulevard/Cooper Point Road as well as the right lane of US 101 between Black Lake Boulevard and the on-ramp to southbound I-5.

The southbound US 101 onramp at Mud Bay and the southbound I-5 exit to 2nd Avenue in Tumwater will also be repaved.

Guardrails on the US 101 on-ramp to northbound I-5 will also be replaced with concrete barriers.

Drivers should expect southbound lane and ramp closures, with the speed limit reduced to 45 miles per hour: advising motorists to detour via southbound I-5 and return via Trosper Road.

Community members can contact WSDOT’s Kyler Kokenge at or Doug Adamson at for concerns and questions.


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  • gracegrace

    Yes, I have a question: This notice was given yesterday May 2nd, and it says this major roadwork starts in May, but please, DOT, give us a heads-up: When in May does it start?

    Wednesday, May 4 Report this