On June 8th, 2024, Wyoming State Highway 22 suffered a catastrophic collapse along Teton Pass. The landslide greatly disrupted Wyoming and Idaho commuters. Wyoming Department of Transportation quickly began work on the Teton Pass highway repair, initially beginning with a temporary detour along the route. On June 30th, 2025, the permanent repair on the road was complete. Professional Engineer Casey Jones, who closely followed the repair work last summer, took a look at the completed effort.
The Landslide and Its Impact
The June 6th, 2024, failure saw a 65-foot deep slide at a hairpin curve along Highway 22 west of Jackson, Wyoming. The 100-foot Teton Pass landslide created immediate difficulty for Idaho commuters working in Jackson. A ~$900,000 emergency bypass was built as a temporary fix, but it wound up lasting for over a year until the full fix was complete.
Permanent Repair Process
The Teton pass permanent repair process, completed by Ames Construction on June 30th, 2025, cost $43 million. The repair process is as follows:
- First, 66,822 cubic yards of failed material was excavated.
- Crews installed 61,700 square feet of soil nail walls.
- Crews placed soil anchors and wire mesh for slope stabilization, installed top-down.
- Geogrid layers were added in between each fill layer provide extra internal strength against shearing for highway embankment stabilization.
Future Outlook Following The Teton Pass Highway Repair
Teton Pass was closed from June 27th through June 30th for the completion of the Teton Pass highway repair. The project finished with permanent realignment and stabilization of the slope. The highway repair apparently has a design life of 75-years. Casey Jones does question where exactly that number came from, though he suspects it’s related to the corrosion rates of the micropile or soil anchor. He further criticized Wyoming DOT’s handling of the entire situation, including the ignoring of arc-shaped cracks.
