Overview
The Riverton Road Bridge was originally scheduled to be replaced as part of the I-15 Exit 89 to Exit 93 Widening project. After sustaining damage from a vehicle strike in November 2025, ITD has determined that the most cost-effective path forward is to replace the bridge ahead of schedule. Construction on the new bridge began in May and is expected to be completed in late 2026.
This bridge design will be compatible with widening improvements designed for I-15, as well as improvements planned by the city of Blackfoot for Riverton Road.
What’s happening now?
Crews are building support walls and piers for the new Riverton Road Bridge.
Spring 2026 Update
It’s time for another I-15 construction update! A busy summer construction season is ahead on I-15 between Pocatello and Blackfoot! Check out the video to learn the latest about upcoming work on the I-15 Northgate to Blackfoot Widening and Riverton Road Bridge projects.
During construction, motorists can expect:
- Daytime and nighttime I-15 lane closures.
- Intermittent nighttime I-15 closures and crossover traffic patterns.
- Reduced speed limits on I-15.
- Riverton Road will remain closed between Frontage Road and Sweetwater Drive.
The new bridge includes:
- A two-span steel girder bridge that will allow future widening of Interstate 15.
- Two 12-foot lanes.
- Two 4-foot shoulders.
- Two 6-foot sidewalks.
- Safety fencing.
Stay in touch!
- Sign up for email updates
- Check Idaho 511 for the latest traffic updates