Santa Fe and Mineral Improvements Project

  • Project typeTransportation
  • Project statusPlanning
  • Start2018
  • Completion2026
Map showing study area at Santa Fe Drive and Mineral Avenue for the Quad Road Project


The Santa Fe and Mineral intersection is the most congested location in the City of Littleton with vehicles stacking for over a mile and delays reaching 15 to 20 minutes of extra travel time. This results in long delays and safety concerns, such as rear-end crashes that are associated with significant congestion. This intersection carries up to 60,000 vehicles per day along S. Santa Fe Drive and 30,000 vehicles per day along W. Mineral Avenue. The purpose of the Santa Fe Drive and Mineral Avenue Improvements Project is to reduce congestion and improve safety at this intersection.

To accomplish this, a new quadrant roadway will be constructed in the southwest parcel of the intersection. The quadrant road concept will remove left turning movements from the intersection and reroute vehicles onto the quadrant road. This diversion allows for additional green time to be provided to the through movements, both north-south along S. Santa Fe Drive and east-west along W. Mineral Avenue.

This project will provide new traffic signals, new lane configurations, traffic signal re-timing, and mobility improvements at this intersection and to the surrounding areas.

Project FAQs(PDF, 122KB)

What is a quadrant roadway?

An intersection that relocates left-turn movements to a new roadway, separate from W. Mineral Avenue and S. Santa Fe Drive. Rather than using a left-turn lane on W. Mineral Avenue or S. Santa Fe Drive, users are relocated to a quadrant road for the left-turn movement.



The city will develop conceptual designs, final design of the quadrant road, and modifications to the segments of W. Mineral Avenue and S. Santa Fe Drive impacted by the removal of the left turn movements. The team will work closely with the Colorado Department of Transportation (CDOT) and other stakeholders, while coordinating with existing projects in the area, including the Mineral Mobility Improvements Project, Douglas County’s South US 85 design, and the CDOT Santa Fe Action Plan.


The project is currently approaching 90% design, with the final design anticipated to be completed in the Spring of 2024. Construction of the project is anticipated to begin in the Fall of 2024, with a duration of 18 to 24 months to complete construction of the project in 2026.

Get Involved

Throughout the project, the city will provide several collaboration opportunities for you to share your ideas on how we can improve your experience at the Santa Fe Drive and Mineral Avenue intersection.

Roadway Examples

Northbound Santa Fe Dr. to Westbound Mineral Ave.

Southbound Santa Fe Dr. to Eastbound Mineral Ave.

Eastbound Mineral Ave. to Northbound Santa Fe Dr.

Eastbound Mineral Ave. to Southbound Santa Fe Dr.

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Contact details


Santa Fe Drive at Mineral Avenue,    View Map

Google Map