What tires do I need in Parleys Canyon?

Only what the active Traction Law class requires. Class 2 applies to all vehicles: 3PMSF tires on 2WD vehicles or M+S tires on 4WD and AWD vehicles, with chains or snow socks also accepted. Class 1 applies only to vehicles over 12,000 lb.

Does I-80 in Parleys Canyon close for avalanches?

No. UDOT says there are no avalanche slides in Parleys, and full closures are rare and follow emergencies such as crashes or fires.

I-80 · UT

I-80 over Parleys Summit: road conditions right now

Salt Lake City, UT to Park City, UT

I-80 climbs Parleys Canyon from Salt Lake City to Parleys Summit, then drops toward Kimball Junction and Park City. It is the main road from the Salt Lake Valley to the Park City ski areas, and Utah's Traction Law applies in Parleys Canyon during severe winter weather.

Checking the forecast, NWS alerts, and DOT feeds for I-80 right now…

Why this stretch is hard in winter

Under Utah's Traction Law, Class 2 (all vehicles) means 3PMSF-rated tires on 2WD vehicles, M+S tires on 4WD and AWD vehicles, or chains or snow socks.
UDOT can put traction requirements in place up to 24 hours before a storm begins; signs, message boards and the UDOT Traffic app show which class is active.
UDOT says full closures in Parleys are rare and follow emergencies such as crashes or fires, and there are no avalanche slides in Parleys.

What this page checks

Hourly forecast at every checkpoint for the time you would be there: temperature, precipitation type and rate, gusts, visibility.
Active National Weather Service watches, warnings, and advisories on the route.
Snow on the ground (NOAA SNODAS) and the Weather Prediction Center winter impact outlook.
Pavement temperature and surface state from state DOT road sensors, when you are leaving within a few hours.
Chain controls, closures, and winter road condition reports from state DOT feeds where they are published openly.
Seasonal closures of mountain roads the router might otherwise use.

Official sources for this corridor

Questions drivers ask about I-80

What tires do I need in Parleys Canyon?: Only what the active Traction Law class requires. Class 2 applies to all vehicles: 3PMSF tires on 2WD vehicles or M+S tires on 4WD and AWD vehicles, with chains or snow socks also accepted. Class 1 applies only to vehicles over 12,000 lb.
Does I-80 in Parleys Canyon close for avalanches?: No. UDOT says there are no avalanche slides in Parleys, and full closures are rare and follow emergencies such as crashes or fires.

Conditions change by the hour. This page is a planning aid built on public forecasts and DOT feeds; the road authority linked above has the final word on closures and chain requirements.

Other corridors: I-80 across Wyoming · I-70 through the Colorado mountains · I-80 over Donner Pass · I-90 over Snoqualmie Pass · I-84 through the Blue Mountains · I-15 over Cajon Pass · all corridors