State Highway 55 in Caldwell to Close This Weekend

The Idaho Transportation Department will shut down a portion of the highway for bridge construction starting October 23.

Updated on Oct. 20, 2026 in Home Renovation

State Highway 55 in Caldwell to Close This Weekend

Live Poll

Do you support planned weekend road closures for necessary bridge infrastructure improvements in your area?

Caldwell residents should prepare for a weekend closure on State Highway 55 between Lake Avenue and Midway Road starting at 10 p.m. on Friday, Oct. 23. The road will remain inaccessible until 5 a.m. on Monday, Oct. 26, to allow crews to complete work on the Wilson Drain bridge.

Why it matters

The closure is required to install a textured overlay on the bridge surface, which will improve traction for motorists and extend the overall service life of the structure. This work is a component of a multi-year effort to expand local infrastructure with additional traffic lanes and pedestrian pathways.

The project involves installing a specialized overlay on the Wilson Drain bridge to enhance road surface traction. This work is part of a broader expansion effort initiated in 2024 that is projected to reach completion in 2028.

The players

Idaho Transportation Department

This is the state agency responsible for the maintenance, planning, and administration of Idaho's transportation infrastructure and highway system.

The details

Crews are performing this bridge work in Canyon County as part of a long-term plan to improve regional connectivity. During the closure, motorists are directed to use Interstate 84, State Highway 19, and U.S. Highway 95 as alternative routes.

Larger construction efforts began in 2024.
State Highway 55 closure begins at 10 p.m. on Oct. 23, 2026.
State Highway 55 closure ends at 5 a.m. on Oct. 26, 2026.
The full construction project is scheduled to finish in 2028.

Accidents
Oct. 19
Caldwell School Bus Collides with Electric Bicycle
Wine
Oct. 15
Gem 73 Winery Opened in Sunnyslope Region
Swimming
Oct. 13
British Swim School Launched Caldwell Safety Program

Culture Shift

This project reflects a broader move toward long-term infrastructure modernization across the region. It positions the local transit network to better accommodate future population growth through planned lane and pathway expansions.

Commuters should plan for travel delays throughout the weekend and utilize Interstate 84, State Highway 19, or U.S. Highway 95 to navigate around the construction zone. These alternate routes will be the primary means for bypassing the bridge work site until the highway reopens on Monday morning.

The takeaway

Drivers are encouraged to adjust their travel schedules early to avoid the weekend closure in Canyon County. Planning your route in advance using designated detours will help minimize the impact of this necessary bridge maintenance.