Wyoming

[andy3175]

Update on WYO 22... according to WyDOT, construction to build a detour of the collapsed section of WYO Hwy 22 over Teton Pass could be ready for driving by the middle of next week.

https://cowboystatedaily.com/2024/06/18/teton-pass-temporary-fix-could-be-paved-and-re-open-by-middle-of-next-week

An end may be in sight for Jackson, Wyoming, workers who live in Idaho and have had to add hours of extra travel a day to get around a "catastrophic" failure of Highway 22 that has kept Teton Pass closed for a week and a half.

On June 8, a large chuck of the mountain slid away from under Highway 22 at milepost 12.8, sending it into the ravine below. This event and the full-blast, 24/7 road reconstruction effort is now being referred to as the "Big Fill Slide."

On Monday night, the Wyoming Department of Transportation announced that officials hope to have a temporary rerouting of the road paved by the middle of next week and the road opened to traffic "soon after."

Opened about an hour ago. Will post a non-FB link if I stumble across one.

https://www.facebook.com/100064686821344/posts/pfbid0KPpTdTSGiSdRHA9EZDzKbFmDf6ppSmo5Fkc15LpFMAXNSAKsF4ixQtYf1VXKJtBVl/?

On May 1, 2025, The Wyoming Department of Transportation reported to the Joint Transportation, Highways and Military Affairs Committee (see https://www.wyoleg.gov/Committees/2025/J08) that the slope failure/landslide that caused Wyoming Highway 22 to collapse and slide off Teton Pass on June 8, 2024, was not avoidable and was caused by extreme, fast-changing weather conditions. The Big Fill Slide project was a rapid reconstruction effort to build the temporary roadway shown in the following photo from WyDOT. However, additional work is needed for the permanent solution.



https://cowboystatedaily.com/2025/05/03/failure-that-caused-teton-pass-to-slide-off-mountain-was-unavoidable-wydot-says/

The actual mudslide that caused the collapse was triggered several thousand feet up the mountain from where the road was eventually wiped out, leaving several feet of mud over the top of the highway. ...

Shortly after the slide, Gov. Mark Gordon issued an emergency declaration, allowing WYDOT to be able to apply with the federal government for emergency repair money. ... Under this program, for the first 180 days after an event, the feds will reimburse 100% of all costs. After that, the costs move to a 50/50 split with the state.

A box culvert was installed on Teton Pass by WYDOT to better channel mud during future runoff and high moisture events. This came at a cost of $1.4 million. ...

Two days after the Highway 22 collapse, WYDOT started developing plans for a temporary detour route to get the road back open, and on June 28, 2024, they accomplished that — just 20 days after the slide wiped out the road. ...

About one week after the slide, WYDOT also issued a request for proposals for a permanent reconstruction of the road. The agency decided to build the road back as it had been prior to the slide.

Fulton said some members of the public questioned why they didn't move the road to avoid future slides. Doing so would've increased Highway 22's 10% grade to 22%, or required the construction of another horseshoe switchback in the road, he said. ...

The actual work on this part of the project started in September, with work continuing through Dec. 16. Fulton said the work stopped at this point because the quantity of snow became too much to overcome. ...

Stabilizing the slopes above the incident cost about $11 million and installing drainage pipes and various foam glass aggregates for the base of the road cost another $30 million.

[bing101]

Road Guy Rob takes a tour of the tunnel in Wyoming.