Donner Watch

Know the pass before you go.

Live chain controls and webcams for I-80 over Donner Pass — updated every minute, straight from Caltrans.

Checking road status...

Welcome! I originally built this site for my own use while frequently traveling between Reno and Sacramento. I often found myself stuck in Donner Pass due to unexpected snow, even when conditions seemed fine elsewhere.

After realizing how helpful this information was, I decided to make it available to others who might be dealing with the same challenge. Unlike many similar sites, this one is completely ad-free and free to use.

I’ll continue to keep it updated for as long as I enjoy working on it. If you find it useful and would like to help support server costs, you can Buy Me a Coffee.

What do R-1, R-2, and R-3 mean?
  • R-0No restrictions. Roads are clear.
  • R-1Chains or snow tires required. Vehicles with snow tires are OK.
  • R-2Chains required on all vehicles except 4WD/AWD with snow tires.
  • R-3Chains required on ALL vehicles, no exceptions.