Alex Wierbinski's picture

By Alex Wierbinski - Posted on 17 November 2018

Mountain Road Closures

Pass update and State of the Inyo National Forest,
Sierra Wave, November 15, 2018.


“State Route 203 (SR-203) from Mammoth Mountain Inn to the Mono/Madera County Line is now closed for the winter season.”

TRAIL MAP: Donohue Pass to Reds Meadow, including bottom of 203

“State Route 168W (SR-168W) (Bishop Creek) will temporarily close at the winter gate just above Cardinal Village for maintenance work and incoming inclement weather on Monday, November 19th at 9:00 a.m. The reopening of this route is dependent upon the completion of road work and favorable weather.”

TRAIL MAP: Muir Ranch to Bishop Pass, including top of 168, where it splits for Lake Sabrina or South Lake

Considerations for Seasonal Pass Closures
"Several factors influence the temporary closing, opening and seasonal closures of our pass roadways.  Storms, accumulation of snow, and road conditions are all considered in the decision-making process by Caltrans leadership. Yosemite National Park confers with Caltrans on SR-120 (Tioga Pass) to coordinate the closure of park entrance gates as well as Caltrans winter closure gates.

"Additional passes under the responsibility of Caltrans District 9 and subject to temporary and permanent closure at any time include; SR-89 (Monitor Pass), SR-108 (Sonora Pass), SR-120E (Mono Mills Road), SR-158 (June Lake Loop, north and south junctions), SR-168E (Westgard Pass), and SR-270 (Bodie Road)."


Great Advice for Mountain Travelers
“Caltrans reminds drivers to carry chains and to be prepared for winter driving conditions. Not having chains in your car, even if four wheel drive, is a punishable offense. Motorist safety kits should contain blankets, water, food, a shovel, gloves, a flashlight, and sand or kitty litter to provide traction in case your vehicle becomes stuck. The traveling public is advised to drastically slow down in heavy winter conditions and proceed with caution.”



Bottom Line

Traveler Expectations
We’re far past the time we should be expecting overnight Winter-level low temperatures to be possible in the High Sierra, despite the lack of precipitation, high temperatures, fire and smoke. Despite all this, we’re still experiencing low temps at high altitudes, and can expect any moisture coming across the Sierra Crest to freeze, and fall as snow.



Donohue Pass to Reds Meadow, including bottom of 203

Muir Ranch to Bishop Pass, including top of 168, where it splits for Lake Sabrina or South Lake



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2018 highway 203 to reds closed Inyo National Forest and transierra road status


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