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.

JUNE 21 - 23, 2019

Rain through the high country should keep recreationists in Denver and Summer traffic at bay this weekend. That being said, there are a whole lot of people still traveling to the mountains, and rain or shine – Summer delays are always likely. Weather will be a major factor, and planning a trip around clear skies will yield the most traffic. Stay up to date with the weather forecast, and check CoTrip.org to learn more about what is happening on the road before you travel!

Friday WB – Moderate-to-heavy traffic expected from 4pm through 7pm. Delays could be 30 minutes or more.

Saturday WB – Moderate-to-heavy traffic expected from 11am through 2pm, with congestion concentrating in Clear Creek County. Weather will be a factor and I-70 will be busiest during sunny and clear hours.

Saturday EB – Moderate traffic through the mid-afternoon with delays of 15 to 30 minutes possible. If a storm moves in suddenly, it may send lots of travelers onto I-70 at the same time, causing additional delays.

Sunday WB – Moderate-to-heavy traffic with delays of up to 30 minutes from 9am through Noon.

Sunday EB – Heavy traffic expected through much of the early afternoon until early evening. Delays of 45 minutes or more are possible.

*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.



  • 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 rideshare  to the mountains and leave the driving to someone else. 


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.

Holiday Weekends - when a national holiday falls on a Monday, you can count on Monday afternoon eastbound traffic to mimic a typical Sunday pattern, but with potentially more volume. On the flip side, the Sunday of holiday weekends tends to have slightly less congestion than usual.

Safety Metering - Safety metering eastbound at the Eisenhower Tunnel goes into effect during periods of particularly high traffic volume. This process is in place to ensure traffic flows safely and freely through the tunnel. Expect eastbound delays when metering is in effect.

Mountain Express Lane - This eastbound express lane provides 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 September. Based on historical data.)

I-70 summer traffic is fairly predictable and very responsive to weather conditions. With just a bit of planning travelers can enjoy More Mountains and Less Traffic. The following is the typical summer weekend traffic pattern. 

Friday Westbound - There are occasionally moderate delays heading westbound on Friday evenings. Traffic may build between Noon and 3pm, peak around 4pm, and end between 6pm and 7pm. Delays during this timeframe might mean an additional 20-30 minutes of travel time on a trip from C470 to Frisco.

Saturday Westbound - On Saturdays, travelers might experience congestion from 10am through 2pm. Get an earlier start to avoid traffic. 

Saturday Eastbound - Minimal delays expected during Saturday eastbound travel, but slower moving traffic is possible from mid-afternoon through early evening.

Sunday Westbound - Delays only likely during long-weekends, holidays, and events.

Sunday Eastbound - Traffic begins building at 11am and lasts through 8pm. There is potential for considerable delays through the entire period, but the worst usually occurs between 3pm and 6pm. To avoid traffic, stay in the mountains through dinner, or spend Sunday night and head back early Monday morning. Check out our Peak Time Deals for special offers and incentives!



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