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Map: Wintry conditions lead to traction law, closures in Colorado's mountains

A snowstorm the day after Labor Day led to road closures and travel advisories in the mountains of Colorado.

COLORADO, USA — The calendar still says summer, but conditions in Colorado’s mountains were decidedly wintry Tuesday, leading to closures and warnings at multiple high mountain passes.

A cold front caused a nearly 60-degree temperature swing in the state, as temperatures in the 90s on Labor Day gave way to the 30s on Tuesday morning.

While the precipitation had yet to stick to the pavement in the Denver metro area, it was a different story in the mountains. 

Here’s a look at road closures and travel advisories across the state.

RELATED: Blog: What to expect with snow back in Colorado

RELATED: LIVE RADAR: Cold front brings chilly, wet weather to Colorado

Traction laws

Passenger vehicles are required to either have snow tires, use chains/alternative traction devices, or be a 4WD/AWD vehicle on several highways throughout the mountain corridor Tuesday night. 

These include: 

  • I-70 between Vail and Copper Mountain 
  • I-70 between Bakerville and Silverthorne
  • I-70 between C-470 and Idaho Springs
  • US 285 between Pine Junction and Morrison
  • Loveland Pass (US 6)
  • Monarch Pass (US 50)
  • Kenosha Pass (US 285)


While there were several closures of mountain passes and a section of I-70 throughout the day Tuesday due to crashes and adverse weather conditions, all major highways are currently open as of 7:30 p.m. Tuesday night.

Check out the 9NEWS traffic map below for the latest information on road closures across the state. We will update this story with the latest details from the Colorado Department of Transportation (CDOT). 

CDOT has deployed plows across the state, as has Denver's Department of Transportation and Infrastructure (DOTI). 

Click the link below for the latest on Denver's plans. 

RELATED: Snow plows hit metro Denver streets on Tuesday morning

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