Project Update 02-19-2026

This update includes notice of an upcoming travel advisory as well as construction progress and planned work for the Santa Fe and Mineral Improvements project in Arapahoe County.

Upcoming Travel Advisory: Starting within the next month, both directions of traffic on Santa Fe Drive (US Highway 85) within the project limits will be shifted east into a temporary alignment to accommodate widening and other work on the west side of the work zone. The shift will take place over a two-night period, with lane closures in place and delays expected. Once implemented, two through lanes and a dedicated single left turn lane will remain in place in both directions of Santa Fe Drive until further notice. A notification will be sent once dates are confirmed.

Since the last update, crews have finished backfilling and waterproofing the concrete box culvert and have begun installing concrete pipe and inlets for the new drainage system. Ongoing work includes excavating for the new quad roadway, and removing asphalt and concrete on Mineral Avenue west of the Santa Fe Drive intersection.

Planned work over the next two weeks includes excavating and placing road base for the new quad roadway, installing drainage pipe and inlets, and building embankment areas. Other work includes preparing for the traffic shift, removing asphalt and concrete, and replacing the traffic signals at Mineral and Platte River Parkway with three-way stop signs. These signs will remain in place until further notice.

Image caption: Recent views of the concrete box culvert and excavation for the new quad roadway.