route to Fireside Resort Spring Rally

[H. John Kohl]

My RV trip planner "RVTRIPWIZARD" has a "do not enter" Flag for route --
Restriction - Teton Pass
WY Hwy 22 & ID Hwy 33 - State Line, Stateline Canyon, ID

Is this not passable for my 40' rv and truck 53 feet total length?
If it is not what is a better route?
I plan on stopping at Valley View RV Park, 5152 North Hwy 20, Island Park, ID 83429 and continue down from there.
Guidance please.
Safe travels.