Starting next week work will begin on three Interstate 90 bridges in the Silver Valley as crews work to carry out routine, preventative maintenance on the structures.
- I-90 bridges west of Silverton over the South Fork Coeur d’Alene River
- I-90 bridges at the Silverton Interchange
- Wallace Viaduct
Through the work zones traffic will be reduced to a single lane of two-way traffic, and speed limits will be reduced to 55 miles per hour for safety. The Idaho Transportation Department will utilize crossovers constructed in previous years to shift traffic across the interstate allowing crews the space to work on these bridges.
This project will be carried out in two phases, the first addressing both sets of bridges near Silverton, and the second will focus on the viaduct in Wallace. Work on these projects is expected to be complete by late fall.
Information about intermittent ramp closures associated with the project will be posted locally, and in advance, on digital messaging signs along I-90. Up to date information will also be available to drivers through the Idaho 511 system.
Routine and preventative maintenance is essential to keeping roads safe, reliable, and cost-effective in the long run. Bridges are critical links in the transportation network, and like any structure, they experience wear and tear over time. By performing regular inspections, repairs, and upkeep now, the department can avoid more serious—and far more disruptive—problems down the road. These proactive measures help extend the lifespan of infrastructure, reduce the likelihood of emergency closures, and ultimately save taxpayer money.