The Local Highway Technical Assistance Council administered this project.

Project Description: The project is located on Turner Road, a farm to market road approximately 0.2 miles west of Grace, Idaho. The Turner Road Penstock Bridge carries Turner Road over eleven foot diameter wooden penstock enclosed pipe that feeds a PacifiCorp owned power generation plant. The penstock is four and one half miles long beginning at the Grace Dam Complex on the Bear River and ending at the Grace Power Plant.

This project consisted of reconstructing Turner Road Penstock Bridge with geosynthetic reinforced soil integrated bridge system (GRS-IBS) technology.

Status: The project is substantially complete. The bridge was opened to the public on June 1, 2016.