Crystal Bridge Replacement
NOTICE : Bridge Key 33038 - Bridge Replacement at 1000 S (Crystal Ave) Bridge will be replaced with a new premanufactured steel bridge and Cast-In-Place abutment system. Work will begin on August 25, closing 1000 S ( Crystal Ave) to through traffic and must be completed within 75 working days of starting construction. Once started, work must continuously progress until completion, except for paving. If all project structure and roadway work items are complete, and weather does not permit project 405 paving to occur within the specification requirements, time may be suspended by the Engineer until weather allows.
Depending on weather limitations, paving may be delayed until spring, April 1, 2026. Please see the attachment for detour mapping.
This project is being guided by Idaho Transportation Department Specifications and Forsgren Engineering.
Trail Creek's Crystal Bridge is set for a complete replacement this fall in a project that promises significant safety and structural improvements for our community.
The city successfully secured a state grant that will cover 100% of the project costs—nearly one million dollars. Additionally, the state will take on project management responsibilities, ensuring professional oversight throughout the construction process.
This long-awaited replacement brings several important enhancements:
Current weight restrictions will be eliminated, allowing for unrestricted vehicle access
A dedicated pedestrian pathway will be added for safer foot traffic
New guard rails will be installed—a crucial safety feature the current bridge lacks
The improvements address longstanding concerns about the bridge's safety, particularly the absence of guardrails on the existing structure. Once complete, the new Crystal Bridge will provide a more secure crossing for both vehicles and pedestrians over Trail Creek.
In related infrastructure news, another grant-funded bridge repair is planned at the Calderwood Lane/Trail Creek Drive/500 West crossing. This project aims to combat erosion by installing rip rap and reinforcing the concrete supports, with work scheduled to begin when water levels are sufficiently low to allow for safe construction.
As these projects progress, we'll provide updates on construction timelines and any temporary traffic patterns that may be necessary during the replacement work.