Area Roundabout History


1995  Second roundabout on Colorado’ state highway system is built at Vail’s main exit. This is deemed an immediate success improving traffic flow.


1997  Avon includes two roundabouts at the new Traer Creek Interchange off of I-70. Constructed by American Civil Constructors, Inc


1997  Vail constructs additional roundabouts in West Vail.


2000  Eagle gets first roundabout at I-70.


2006  Eagle County/5 Metro Districts from the Edwards area designed the Edwards roundabout project. This project, initially designed with three roundabouts, was shovel-ready and awaiting funding.   


2007  Avon adds four large intersection roundabouts, making a total of 10 for the town.


February 20, 2009  America Recovery and Reinvestment Act (ARRA) funding sets accelerates construction of the Edwards roundabouts.


December 2009  American Civil Constructors, Inc., was the low bidder and awarded a $6.4 million contract to construct the Edwards Interchange Improvements.


March 15, 2010  Construction begins on the long awaited roundabout project for Edwards.


November 19, 2010  Construction complete.


Roundabouts: What are they?

Roundabouts are circular intersections designed to calm traffic, increase safety, reduce stop and go travel, and decrease traffic delays. They were introduced into Colorado in the late 80’s in Colorado Springs.  Since then, roundabouts have proven to be an efficient means to move traffic through congested intersections and have shown to reduce accidents by half (all but eliminating the more severe broadside and head-on collisions).

There are some 140 roundabouts on Colorado highways that have replaced the traditional signalized or signed intersection. Twenty-six of these roundabouts are located on—or provide access to—state highways (including interstate ramps) with proposals for more each year on both state and local roadways.

Roundabouts also offer a safe environment for pedestrians, who have only to navigate one-way traffic flow. In addition to the construction of the roundabouts, the Edwards Interchange Improvement project includes 8-foot sidewalks along the majority of the reconstructed road, improving general safety for bicyclist and pedestrians.

Driving in a roundabout can be intimidating but it’s really quite simple when you know how it works.    

Here are 5 easy steps to know:

  • Slow down: Speeds of 15 mph or less are adequate in the roundabout
  • Yield: Vehicles must yield to the left before entering a roundabout
  • Entering: Never stop once inside the roundabout. The vehicle in the roundabout has the right of way.
  • Destination signs: Look for destination signs and exit in that direction.
  • Exiting: Look to your right, check your mirror and use your turn signal.