Santa Fe & Mineral Improvements Project

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Traffic at Santa Fe and Mineral


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.Map showing study area at Santa Fe Drive and Mineral Avenue for the Quad Road Project

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.

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

Quad road image


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 East Mobility-Shed Project, Douglas County’s South US 85 design, and the CDOT Santa Fe Action Plan.

2018 Study Documents
Santa Fe-Mineral Final Report - 11-2019 - 9MB
Combined TIS - 3rd Submittal - 02-17-2021 - 14MB
Public Comment Report - November 2018
Santa Fe/Mineral Description of Alternatives
Santa Fe/Mineral Evaluation Summary


The conceptual and final design processes are expected to take 12 to 18 months with construction beginning in 2023.

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. Keep an eye out for ways you can participate through self-guided online meetings and in-person events coming soon!

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