Scheduled Traffic Impacts — April

A separate Travel Advisory will be issued announcing the upcoming traffic shift on Mineral Avenue. Notifications will be sent out if there are any changes to the schedule.

Traffic Impacts - Santa Fe Drive (US Highway 85)

Sunday, April 19 to Monday, April 20 - Southbound Santa Fe Drive - single overnight lane closure & 24/7 right shoulder closure.

  • Starting at 7 p.m. on Sunday, April 19 and lasting until 6 a.m. on Monday, April 20 a single lane closure will be in place on southbound Santa Fe Drive, with signs and devices present to maintain safety.
  • The right shoulder on southbound Santa Fe Drive will be closed 24/7 starting at 7 a.m. on Monday, April 20 until late June.
  • The project limits on Santa Fe Drive extend a half-mile north and south of the Santa Fe Drive and Mineral Avenue intersection, from Mile Point 201 to MP 202 in the City of Littleton.
  • Delays can be expected and alternate routes are advised.
  • A speed limit of 50 mph is in place on Santa Fe Drive.
  • Check the Cone Zone Page or COtrip.org for scheduled traffic impacts.

Work includes setting barrier and preparing the shoulder for a 24/7 closure.

Travel Advisory - Mineral Avenue - Traffic Shift

Monday, April 27 until further notice - Mineral Avenue from west of Santa Fe Drive intersection to west of Platte River Parkway - traffic shift north into two-way single-lane alignment.

  • Starting on Monday night, April 27, both directions of traffic on Mineral Avenue from west of the Santa Fe Drive intersection to west of South Platte River Parkway, will be shifted north and reduced to a two-way single-lane alignment.
  • The shift will be implemented during overnight hours on Monday, April 27 and in place from 7 a.m. on Tuesday, April 28 until further notice.
  • The traffic signals at the Platte River Parkway and Mineral Avenue intersection will be removed to maintain east-west traffic flows.
  • Southbound Platte River Parkway at Mineral Avenue will be reduced to a single right turn lane onto westbound Mineral Avenue. No left turns will be permitted.
  • Access to eastbound Mineral Avenue to and from Platte River Parkway will be via Aspen Grove and Santa Fe Drive, with detours posted.
  • Access to northbound Platte River Parkway from westbound Mineral Avenue will remain in place.
  • Please refer to the map for the location and configuration of the traffic shift.
  • Delays can be expected and alternate routes are strongly advised.
  • Please exercise caution and drive slowly while motorists get used to the reduced alignment and restricted turn lanes.
  • A speed limit of 45 mph is in place on Mineral Avenue.
  • The project limits on Mineral Avenue extend from west of Platte River Parkway to east of the Santa Fe Drive intersection.
  • Signs and construction devices will be present to alert the public to the closures and work zone restrictions.
  • Follow traffic impacts at LittletonCO.gov/ConeZone.

Work includes widening the south side of Mineral Avenue and making traffic signal and pedestrian accessibility improvements.

Map of the location and configuration of the Mineral Avenue traffic shift.

About the Project

  • The project began in late November 2025 with anticipated full completion by fall 2027.
  • Normal working hours are 7 a.m. to 5 p.m. Monday to Friday.
  • Some overnight work will take place from 7 p.m. to 5 a.m.

Work includes building a quadrant roadway and roundabout, widening Santa Fe Drive and Mineral Avenue, adding new lane configurations, installing new traffic signals, and making area mobility and safety improvements.

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Categories: 2026
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