Travel Forecast & Tips

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Fortunately, I-70 is congestion free the majority of the time and traffic is quite predictable, weather and accidents withstanding. Plan to avoid peak travel times, and enjoy a delay-free trip along I-70.  Our weekend travel forecast is updated every Thursday afternoon.

Weekend Travel Forecast

July 3-5, 2015

Friday, July 3 - Westbound delays will likely begin by 10:00 a.m. and end as late as 10:00 p.m.  Delays could add as much as 90 minutes to your westbound drive between 2:00 and 8:30 p.m.

Saturday, July 4 - There will be a fair bit of westbound volume from 8:30 a.m.-4:00 p.m. with peak delays of around 50 minutes.  Eastbound traffic due to volume is not anticipated.

Sunday, July 5 - Expect significant traffic eastbound with a peak delay of approximately 1 hour!  To play it safe, avoid the 9:30 a.m.- 6:00 p.m. timeframe when traveling eastbound.  The worst of the traffic will occur between 10:30 a.m. and 4:00 p.m.

Be sure to check CDOT’s mobile app or CoTrip.org for the current traffic conditions. On Saturday and Sunday, stick around the mountains later in the day to avoid the jam and take advantage of GoI70’s Peak Time Deals.

*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.

Tips for I-70 mountain travel

Summer Traffic Patterns

(June through September)

I-70 sees lots of weekend travelers from the first week of June through Labor Day, and the information below can help you plan your trip around the traffic. September weekends see a similar pattern of congestion, but delays are not as significant.


Friday westbound
– There are occasionally moderate delays heading westbound on Friday evenings. Traffic may build between 2:00-3:00 p.m., peak around 4:00 p.m., and end between 6:00-7:00 p.m. These delays might mean an added 20 minutes to a trip from Golden to Vail.

Saturday and Sunday WB – traffic is well-distributed westbound on weekend mornings. The exception to this is the Saturday of Labor Day Weekend where moderate delays may occur from 10:00 am-3:00 pm.

Saturday EB- Saturday eastbound traffic tends to be much lower in volume than Sunday. It is usually spread out enough that, barring an accident, there is not much congestion. 

Sunday EB – According to historical data, eastbound traffic starts to build around 11:00 a.m. The peak of traffic is consistently at 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.

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. On the flip side, the Sunday of holiday weekends tends to have far less than normal congestion.

Safety Metering – Safety metering at the on ramps in Frisco, Silverthorne goes into effect during very high volume times.  This process controls the flow of traffic eastbound into the Eisenhower Tunnel, so traffic does not back up in the tunnel. 

Weather- In the summer, weather plays a larger 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.

Before you travel, check one of CDOT’s Real Time Info resources to see the current status of I-70!