SH-13 Kooskia Curve | Idaho Transportation Department

ITD is realigning the curve on SH-13 in Idaho County to minimize future accidents.

Project Regions

North-Central Idaho Near: Kooskia , Winchester
Project Routes
State Highway 13 US-95
Project Phase
Planning & Design

ITD is realigning the curve on SH-13 in Idaho County to minimize future accidents.

Overview

The scope of the SH-13 Curve Improvement in Idaho County is to realign the current roadway curve from mileposts 23.34 to 23.74. The project will be accomplished by realigning the horizontal and vertical curves, widening the highway, and flattening the slopes of the existing curve to minimize future accidents within this section of highway. The results of the project will be safer curve to eliminate the frequency and severity of accidents in the region.

View of Sh-13 near Kooskia as seen above.

High above the river looking at a Kooskia curve on SH-13.

Construction Outlook

Construction is programmed to begin in 2029. Work is anticipated to take 2.5 months to complete, with one lane closed. Impacts could change once a contractor is hired, typically within one year of the start of construction.

Contact

Curtis.Arnzen@itd.idaho.gov