I-15 lane closures
Expect I-15 lane closures near the Riverton Road Bridge in mid- to late November as crews prepare for paving.
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.
In November, crews plan to:
- Continue to build structural support walls.
- Form and pour concrete for curbs, gutters and sidewalk.
- Install drainage infrastructure.
- Build bridge pier columns.
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!
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- Check Idaho 511 for the latest traffic updates