Travel Forecast & Tips

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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

August 26-28, 2016 

Friday Westbound:  Some slowing is possible from 1:00-6:00 p.m., especially in the Floyd Hill to Idaho Springs area.

Saturday Westbound: Expect slowing between Floyd Hill and Idaho Springs between 10:00 a.m. and 4:30 p.m., resulting in 20-30 minutes extra travel time.

Eastbound Saturday:
No volume-related delays are expected.

Eastbound Sunday:
The last two years there were only 10 minute delays between Noon and 4:30 p.m. on this last Sunday in August.

The GoI70 Peak Time Deals are designed to keep you entertained and well-fed while you wait out the traffic.  Check out the fully searchable database of deals at GoI70.com/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-September)

The I-70 mountain corridor sees higher traffic volumes in the summer than it does in the winter. Some weekend congestion can be expected  from Memorial Day through Labor Day, and the information below can help you plan your trip around that traffic. September weekends see a similar pattern of congestion, but delays are not as significant.


Friday WB
– 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 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.  It is a safety, not a traffic control, measure.  Expect delays when metering is in effect.

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!