Greys River Road

rocky2track

Active Member
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315
This has been ongoing this winter but looks like USFS just closed the lower 14 miles of the Greys River Road until this land slide decides what its going to do. There certainly won't be a quick fix for this one. See the statement below:

Greys River corridor closed for public safety (posted 3/14/18)
Landslide slumping into the Greys River
Bridger-Teton National Forest
The Bridger-Teton National Forest has closed the Greys River Road (FS Road 10138) to all activity until further notice, from the parking lot in Alpine, Wyoming through the Porcupine Road as a result of the Porcupine Landslide which began in February, 2018.

"We have finished analyzing the modeling that has been completed on a potential flooding scenario," said Greys River District Ranger Justin Laycock. "While the model shows that the flooding risk to homes or property in Alpine, Wyoming is considered 'low' and limited to two structures, the risks in the corridor itself are much different," he explained. "The model looked at a 40-foot high natural dam completely occluding the Greys River. In the model, if the dam was to back up water to the point it breeched the natural dam or the natural dam gave way, the low lying areas of the Greys River corridor could experience up to a 10-foot wall of water," he said. "Given the uncertainty of when or if the scenario could take place, and the fact that the ability to notify and clear the acres of affected area in the modeled scenario would take longer than the 4 hours we would have to act, we must close the area to human presence until the situation stabilizes," he said.

The landslide is a quarter of a mile wide and is still slumping towards the Greys River. The Forest worked with the U.S. Army Corps of Engineers (USACE) on modeling the flood scenario should the landslide create a natural dam in the Greys River. "The predicted rain and warm up that is characteristic of the beginning of spring runoff has reached one of our established trigger points and is the reason for my decision to close the corridor immediately" Laycock said.

With the closure order, two of the Forest's Guard Stations which are usually available to rent, the McCain and Deer Creek Guard Stations, will be unavailable for reservations until further notice.

Although the Alpine access and the Greys River Corridor is closed through Porcupine Road, visitors still may access the Forest beyond the closure by three other routes.
(1) either by the Smith?s Fork, Forest Service Road 10072, road located South of Afton or
(2) through forest service access from Big Piney, WY (proceed to Ryegrass Junction to Forest Service Road 10125, also known as N. Cottonwood, then over McDougal Gap to Greys River Road) and
(3) The La Barge Road accessed from the town of La Barge, Wyoming.

"There is quite a bit of country still open and accessible upstream of the landslide but the area downstream is going to remain closed until further notice," he said.

For more information, visit the Forest Website at https://www.fs.usda.gov/btnf/. For additional information, contact the Bridger-Teton National Forest at (307) 739-5500.

The Bridger-Teton National Forest will hold a public meeting to answer questions on the Porcupine landslide which is affecting the Greys River Road, (FS Road 10138). The meeting will begin at 6:00 p.m. on Wednesday, March 14, 2018 at the Alpine Civic Center located at 121 US-89, in Alpine, Wyoming.
 
That was a neat video and is a great use of a drone! That slide area is not too far from where we trailered the horses and went up high where I killed my best buck in 2015!
 
That road gets a little sketchy when wet!
Pretty sure a gas station would make out well about midway.
 
That will help the guys that pack in farther.

"I have found if you go the extra mile it's Never crowded".
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