NW Walker Road will close between NW 174th Terrace and NW Cambray Street for four months as crews replace the aging culvert at Willow Creek.

This upgrade will improve water flow, support fish and wildlife passage, and enhance safety by raising the road 8–10 feet to improve sight distance.

Closure dates: August 3 - December 1, 2026

Detours:

• Vehicle detour route
• Cyclists and pedestrians detour route

The culvert replacement is part of the larger Walker Road (173rd Avenue to 185th Avenue) Improvement Project, which aims to enhance one of the county's most important connections between Hillsboro and Beaverton.  

Travelers can expect lane and ramp closures through October with up to four closures of all northbound lanes in late August and September. ODOT evaluated options on how to install the new bridge joints and selected the option that keeps travel lanes open during the day. 

• For up to 15 weeks starting late July, crews close three lanes on I-5 northbound and the Miley Road I-5 northbound entrance ramp near Charbonneau from 8 p.m. to 5 a.m. These closures are expected five nights per week during construction.
• Starting Thursday night, travelers can expect intermittent nighttime lane closures on I-5 northbound 8 p.m. to 5 a.m. at the Boone Bridge while crews gather site information and set up the work area under the bridge.

Beginning early July, travelers will also see a crane next to the Boone Bridge for exploratory geotechnical work on a separate project. There will be shoulder closures and impacts to the trail under the bridge.

More information available on ODOT's project webpage.