Overview
The bridge, located 17 miles east of downtown Boise and spanning the Mores Creek segment of Lucky Peak Reservoir, was originally constructed in 1953. This preservation and rehabilitation project aims to address deficiencies identified during inspections, enhancing safety and functionality for the traveling public. ITD’s goal is to extend the bridge’s service life by an additional 28 years, reaching 2053, through ongoing maintenance and necessary repairs.
Previous Rehabilitation Effort
Over the years, the bridge has undergone several rehabilitation and repair projects, including railing replacement, seismic retrofitting, structural painting, and pavement overlay.
Current Rehabilitation Scope
The current project will include, but is not limited to:
- Cleaning and painting the steel superstructure and bearings
- Replacing deck joint seals (waterproofing material at deck joints)
- Concrete spall repairs (to extend the life of the concrete deck and substructure)
- Mitigate and prevent erosion
Project Phasing
The rehabilitation of this 72-year-old bridge is expected to take up to approximately 6 months and will be executed in two phases. Construction will occur on one half of the bridge at a time, ensuring continuous access for motorists and maintaining traffic flow through the corridor.
Traffic Management
Temporary traffic signals at each end of the bridge will control two-way, single-lane operation through the bridge. The project will be confined within the existing right of way, with all work being performed from the bridge deck. This approach will minimize disruptions and eliminate lengthy detours.
Exception: Wide loads will be required to follow posted detour route during construction.
Project Timeline
-
2023 January
Asset Management Plan – Completed
-
2025 January
Preliminary Design
-
2025 Spring
NEPA Approval
-
2025 Summer
Final Design
-
2026 Fall
Construction Anticipated
-
2027 Spring
Completion Anticipated
Chonne Sherman
Project Inquiries