Mastering I70 Travel in Snowstorms and Choosing Highway 285 for Safety
- Sam Marks
- Dec 5, 2025
- 3 min read
Traveling through Colorado’s mountain highways during a snowstorm can be challenging and dangerous. Interstate 70 (I70) is a major route that connects Denver to mountain towns and ski resorts, but it often faces closures and hazardous conditions in winter storms. Highway 285 offers an alternative path that can be safer depending on the weather and your destination. This guide explains how to navigate I70 safely during snowstorms and when it makes sense to switch to Highway 285.
Understanding the Risks of Driving I70 in Snowstorms
I70 crosses the Rocky Mountains and reaches high elevations, where snow and ice accumulate quickly. The steep grades, sharp curves, and tunnels add complexity to winter driving. Common risks include:
Black ice and slick spots that reduce traction unexpectedly
Reduced visibility from blowing snow or fog
Chain controls or closures imposed by the Colorado Department of Transportation (CDOT)
Traffic backups caused by accidents or slow-moving vehicles
Drivers unfamiliar with mountain winter conditions may find I70 intimidating during storms. Even experienced drivers should prepare carefully.
Preparing Your Vehicle and Yourself for I70 Winter Travel
Before setting out on I70 in snowy weather, take these steps:
Check the weather forecast and road conditions on CDOT’s website or apps like COtrip
Equip your vehicle with winter tires or chains; carry chains even if not required
Pack emergency supplies such as blankets, food, water, flashlight, and a shovel
Fill your gas tank to avoid running low if stuck in traffic
Drive a vehicle with all-wheel or four-wheel drive if possible for better control
Adjust your driving style to the conditions: reduce speed, increase following distance, and avoid sudden braking or sharp turns.
When to Consider Highway 285 as an Alternative
Highway 285 runs southwest from Denver through foothills and lower elevations before reaching the mountains. It is often less affected by heavy snow and closures than I70. Consider Highway 285 if:
I70 is closed or under chain restrictions due to heavy snow or accidents
Your destination is along or near Highway 285, such as Evergreen, Conifer, or Fairplay
You want to avoid the steep mountain passes on I70, especially if you are uncomfortable with winter mountain driving
Weather reports show better conditions on Highway 285
While Highway 285 is generally safer in snowstorms, it still requires caution. The road can be narrow and winding in places, and snow can accumulate quickly at higher elevations.
Tips for Driving Safely on Highway 285 in Winter
Check road conditions before departure using CDOT resources
Use winter tires or chains if snow is expected
Drive slowly and watch for icy patches, especially on shaded curves and bridges
Be prepared for wildlife crossing in rural areas
Allow extra travel time as speeds will be slower than usual
Highway 285 can be a scenic and less stressful alternative to I70 during winter storms, but it demands respect for changing conditions.
Real-Life Example: Choosing the Right Route During a Snowstorm
In January 2023, a heavy snowstorm hit the Denver metro and mountain areas. I70 was closed for several hours due to multiple accidents and chain requirements. Many travelers heading to ski resorts were stuck in traffic or forced to turn back.
Those who chose Highway 285 early avoided the worst delays. For example, a family driving to Fairplay took 285 instead of waiting on I70. They encountered snow but kept moving steadily and arrived safely. This choice saved them hours of frustration and risk.
Monitoring Conditions and Making Smart Decisions
Mountain weather can change rapidly. Use these tools to stay informed:
CDOT’s COtrip website and app for live traffic cameras, road closures, and chain control updates
Local news and weather stations for storm forecasts and travel advisories
GPS navigation apps that provide real-time traffic and route suggestions
If conditions worsen, do not hesitate to delay travel or seek shelter. Safety should always come first.
Final Thoughts on Winter Travel in Colorado Mountains
Traveling I70 during snowstorms requires preparation, caution, and flexibility. Know your vehicle’s capabilities, check conditions frequently, and adjust your plans as needed. Highway 285 offers a valuable alternative route that can reduce risk and stress when I70 is unsafe or closed.
By understanding the challenges and options, you can master winter travel in Colorado’s mountains and arrive safely at your destination.

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