Traffic

Road work to close these I-5 ramps in Tumwater Thursday night

Cars navigate cones and extended lane closures in February at the beginning of the construction on Tumwater’s Capitol Boulevard and Trosper Road intersection.
Cars navigate cones and extended lane closures in February at the beginning of the construction on Tumwater’s Capitol Boulevard and Trosper Road intersection. sbloom@theolympan.com

Drivers are advised to avoid the northbound Interstate 5 off- and on-ramps at Trosper Road Southwest in Tumwater Thursday evening.

Work crews plan to close the ramps at Exit 102 from 9 p.m. Thursday to 5 a.m. Friday, according to a City of Tumwater news release. During the closure, crews will shift the lanes west by applying new lane markings.

The shifts are needed because workers require more space to build a new roundabout, according to the release. The project is part of the Capitol Boulevard Corridor Project, an effort to improve traffic and safety on Trosper Road from the I-5 overpass to Capitol Boulevard.

Drivers can avoid the lane closures by taking detours via Exit 101 to Tumwater Boulevard or Exit 103 to Deschutes Way. The city says it chose to schedule the ramp closures at night because there’s typically less traffic then.

The city cautions that the ramp closure schedule may change due to weather, equipment or other delays.

The Capitol Boulevard Corridor Project costs about $12.5 million, according to the project website. The Washington State Transportation Improvement Board funds most of the project by providing $9.8 million. The city’s Transportation Fund provides $3.2 million.

Crews previously completed months of utility work along Capitol Boulevard north and south of Trosper Road, according to the website.

The current work is focused on reconfiguring Trosper Road and Capitol Boulevard by adding three roundabouts and a new street, Sixth Avenue, from Lee Street to Trosper Road.

Construction is expected to last through mid-2024.

Martín Bilbao
The Olympian
Martín Bilbao reports on Thurston County government, courts and breaking news. He joined The Olympian in November 2020 and previously worked for The Bellingham Herald and Daily Bruin. He was born in Ecuador and grew up in California. Support my work with a digital subscription
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