Project to Begin this Fall

Construction will begin this fall on the Santa Fe and Mineral Improvements Project, a long-planned upgrade to the most congested intersection in Littleton.

The intersection of Santa Fe Drive and Mineral Avenue will soon see major improvements aimed at reducing traffic delays and improving safety. With as many as 60,000 vehicles per day on Santa Fe and 30,000 on Mineral, drivers can currently experience delays of up to 20 minutes during peak times.

To address these issues, the city is constructing a new quadrant roadway in the southwest corner of the intersection. This innovative design will reroute left-turning traffic onto a separate roadway, freeing up green-light time for through movements and improving overall flow.

The project includes new traffic signals, lane configurations, and timing adjustments, along with other mobility and safety upgrades in the surrounding area.

Construction is expected to begin this fall and will take approximately two years, with completion anticipated in fall 2027. Work is scheduled to start on land southwest of the intersection. Traffic impacts will be posted to the Cone Zone page at LittletonCO.gov/ConeZone.