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Big Fill slide - Teton Pass critical failure - June 2024


Big Fill slide information

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Wyoming Highway 22/Teton Pass suffered a critical failure at milepost 12.8 the weekend of June 8 and is currently closed with no estimated reopening date.

Click here for timeline of events related to landslide on Teton Pass. Last updated June 13, 2024. NOTE: this is a rapidly evolving situation, check back for updated information.

WYO 22 also experienced a mudslide at milepost 15, which is not related to the Big Fill slide. The slide was discovered June 7. Crews are continuously cleaning up water, mud and debris as it comes down the mountain. They are currently working on a plan to improve drainage in the area to limit the amount of mud and debris that breaches the road during these spring runoffs. 

Press Releases:

Additional Facts:

Crews with Evans Construction are working around the clock to build the temproary detour.

Governor Mark Gordon issued an emergency declaration June 8. You can read that declaration here. 

Click here for more information about landslides in Wyoming from the Wyoming Geological Survey.

Yellowstone National Park and Grand Teton National Park remain open for visitors. 

Teton Pass sees an Annual Average Daily Traffic (AADT) of almost 10,000 vehicles per day in certain locations along the pass. Summer highs can reach 15,000 vehicles. 

No employees, contractors or other members of the public were injured in the collapse. 

No equipment or buildings were lost or destroyed in the collapse. 


Big Fill Slide Photos

WYO 22 mudslide - milepost 15 - June 7 - drone photo 1 (3.98  MB)
WYO 22 mudslide - milepost 15 - June 7 - drone photo 2 (4.05  MB)
WYO 22 mudslide - milepost 15 - June 7 - drone photo 3 (4.41  MB)
WYO 22 mudslide - milepost 15 - June 7 - drone photo 4 (4.33  MB)
Big Fill slide - crack before slide - June 7 - photo (1.09  MB)
Big Fill slide - June 8 - drone photo 1 (4.52  MB)
Big Fill slide - June 8 - drone photo 2 (4.85  MB)
Big Fill slide - June 8 - drone photo 3 (4.61  MB)
Big Fill slide - June 8 - drone photo 4 (4.54  MB)
Big Fill slide - June 8 - drone photo 5 (4.66  MB)
Big Fill slide - Detour underway - June 10 - drone photo 1 (4.44  MB)
Big Fill slide - Detour underway - June 10 - drone photo 2 (4.62  MB)
Big Fill slide - Detour underway - June 10 - drone photo 3 (4.64  MB)
Big Fill slide - Detour underway - June 10 - drone photo 4 (4.62  MB)
Big Fill Slide - Geology drilling - June 11 - photo (5.5  MB)
Big Fill Slide - Evans Construction detour progress - June 11 - photo (7.75  MB)
Big Fill Slide - Evans Construction detour progress - June 11 - photo 2 (3.37  MB)
Big Hill Slide - Detour work - June 12 - Drone photo (4.73  MB)
Big Hill Slide - Detour work - June 12 - Drone photo 2 (4.68  MB)
Big Fill Slide - Detour work June 13 drone photo (2.18  MB)
Big Fill Slide - Detour work June 13 drone photo 2 (2.22  MB)
Big Fill Slide - Detour work June 14 drone photo (4.55  MB)

WYDOT gives full permission for media outlets to use the photo, video, text and other media on this page in their reporting. Please credit all media to WYDOT.