I-70 traffic is quite predictable unless affected by weather or accidents. Plan to avoid peak travel times, and enjoy a delay-free trip along I-70.  Our weekend travel forecast is updated every Thursday afternoon.


We are now deep into heavy Summer traffic patterns. Rainy skies and thunder are expected through much of the weekend, and this maaaaay translate into slightly less traffic than most weekends. Travel through the western section of I-70 in Colorado may be challenging due to ongoing mudslides and closures through Glenwood Canyon. Keep your eye on the weather, and make sure you check ​​​​​​Cotrip.org to know before you go!

Friday WB - Moderate-to-heavy traffic between 1pm and 7pm with the peak travel times and heaviest delays of around 30 minutes between 2pm and 6pm.

Saturday WB - Heavy traffic volume expected through much of the day, from 9am through 3:30pm, with the peak travel times and heaviest delays of 30 to 45 minutes between 11am and 2:30pm. A rainy forecast through the day will mean slightly less traffic. 

Saturday EB - Moderate traffic volume expected with delays of 15 to 20 minutes or more between 2pm and 8:30pm. A sunnier morning with afternoon thunderstorms are still a possibility; expect delays of up to 30 to 45 minutes if adverse weather moves in quickly, forcing hikers back into their cars and onto I-70.

Sunday WB - Moderate traffic volume expected with delays of 15 to 20 minutes between 10am and 1pm.

​​​Sunday EB - Despite the poor weather, this is still when to expect the weekend's heaviest traffic volume with delays of up to an hour or more likely between Noon and 6pm. For easiest travel, take advantage of Peak Time Deals and leave the high country after 6pm. 

*The GoI70.com Travel Forecast is based on historical data, along with an estimation of how weather, construction, public events and other factors might impact travel.

I-70 Daily Snow


That's a wrap on the 2020-2021 season! Make sure to follow our summer service, OpenSummit, to always catch the best weather window for your next adventure. Thank you so much for your continued support of OpenSnow and we'll see you back here in November 2021.

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  • Avoid the Peak Travel Times.  If heading eastbound on Saturday or Sunday, plan to leave the mountains after 7:00 p.m. Check the weekend and holiday Travel Forecast.
  • ​​​Check the road and traffic conditions before you travel. 
  • Check out the Peak Time Deals local businesses offer to help you avoid peak travel times.
  • Spend a Sunday night in the mountains and head to work or school early Monday morning.
  • Prepare for I-70 mountain driving conditions.  Understand the Traction & Chain Laws.
  • Create or join a carpool. 
  • Consider taking a bus, train, van or carpool to the mountains and leave the driving to someone else. 



Holiday Weekends - when a national holiday falls on a Monday, you can count on Monday afternoon EB traffic to mimic a typical Sunday pattern, but with potentially more volume.

Safety Metering – Safety metering eastbound at the Eisenhower Tunnel goes into effect during high volume times.  This process controls the flow of traffic eastbound into the Eisenhower Tunnel, so traffic does not back up in the tunnel.  Expect eastbound delays when metering is in effect.

Weather - In the summer, weather plays a large factor in traveler behavior. If rain showers move in early in the day, expect drivers to head back to the Front Range early as well.

Mountain Express Lane - The Mountain Express Lanes provide a more reliable travel time to those willing to pay the toll.  Get the ExpressToll pass to pay the posted toll rate. Those without a pass will be billed the posted rate plus a service charge.  More info at ExpressToll.com


(June through mid-September. Based on historical data.)

During the shoulder seasons of early April through the beginning of June, and mid-September through mid-December, traffic on I-70 is light, and volume related delays are not common. Following that, and depending on weather (rain, snow melt, and wildfires), routine Summer traffic begins to build in early June and lasts into mid-September. Thankfully, I-70 traffic IS PREDICTABLE and that means that by shifting your travel times, I-70 traffic is AVOIDABLE; the forecast below is based on years of traffic data and analysis, and can help you avoid the worst of it!

Friday Westbound - There are occasionally moderate delays heading westbound on Friday evenings. Traffic may build between Noon-3:00 p.m., peak around 4:00 p.m., and end between 6:00-7:00 p.m. Delays during this timeframe might mean an added 20 minutes to a trip from C470 to Frisco.

Saturday and Sunday Westbound - On Saturdays, you might experience congestion from 10:00-2:00 p.m.  Get an earlier start to avoid traffic.  There are rarely westbound delays on Sundays.  

Saturday Eastbound - Saturday eastbound traffic tends to be much lower in volume than Sunday but slow traffic might be encountered mid-afternoon/early evening.

Sunday Eastbound - According to historical data, eastbound traffic starts to build around 11:00 a.m. The peak of traffic is consistently between 3:00 and 4:00 pm all summer long. With folks trying to enjoy every bit of daylight in the mountains, the traffic typically doesn’t diminish until approximately 7:00-8:00 p.m.  To avoid the traffic, consider staying in the mountains for dinner, or spend Sunday night and head back to the Front Range early Monday morning.  Check out the GoI70.com Peak Time Deals for discounts on dining, shopping, activities and Sunday night lodging deals!


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