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
Sept. 5-7 & Sept. 12-14

Friday WB – Be prepared for some slowing from 11:00-6:00 p.m. between Floyd Hill and Idaho Springs.  Previous years shows 15-30 minute peak delays at Noon.

Saturday WB – Some congestion between Floyd Hill and Idaho Springs is possible around 10:00 a.m. and could continue until around 6:00 p.m.

Saturday EB – No traffic is predicted.

Sunday EB – Some traffic congestion is possible between 1:00-7:00 p.m. On this day in recent years, the peak delay was only 15 minutes. 

*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

(mid-June through mid-September)

Friday westbound– There are often delays heading westbound on Fridays between Floyd Hill and Idaho Springs. Traffic may build by 11 a.m., peak around 4:00 p.m., and end  as late as 7:00 p.m.

Saturday westbound -  Heavy traffic is likely starting as wearl as 10:00 a.m. and lasting until late afternoon or early evening, with the back ups occuring between Floyd Hill and Idaho Springs.

Saturday eastbound- Barring bad weather or an accident, congestion should not be an issue.

Sunday westbound- traffic is not an issue westbound on Sundays.

Sunday eastbound – According to historical data, traffic starts to build by 11:00 a.m. The peak of traffic is pretty consistently between 2:00 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 sometimes 7:00-8:00 p.m. 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 minimal congestion.

Metering - Traffic metering goes into effect during very high volume times at the Johnson/Eisenhower Tunnels.  This process involves controlling the flow of traffic eastbound into the Eisenhower Tunnel, so traffic does not back up in the tunnel.  It is done for safety reasons so emergency vehicles can have access to the tunnel in case of an accident, a fire, etc.

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.

 Check one of CDOT’s Real Time Info resources and plan accordingly and avoid the jam!