Phase 13 will extend the St. Vrain Greenway Trail more than two miles northeast from the Sandstone Ranch Nature Area to the trail network at St. Vrain State Park. This link will eventually connect to the Weld Legacy Trail east of I-25 in the Town of Firestone. The St. Vrain Greenway is also part of the statewide Colorado Front Range Trail, which is planned to run from Wyoming to New Mexico.

 

The work includes two pedestrian bridges—one north of Colorado Highway 119 over St. Vrain Creek and another south of the highway overlooking St. Vrain Creek. A concrete underpass will also be built beneath the highway to help pedestrians and bicyclists cross safely.

 

Other improvements include adding erosion control measures to help prevent soil from washing away, installing new fencing to guide trail users and protect nearby areas, and landscaping to revegetate areas impacted during construction.

 

The project is partially funded by the Denver Regional Council of Governments (DRCOG) Multimodal Options Funds Transportation Improvement Program (MMOF TIP) grant, which is administered by the Colorado Department of Transportation (CDOT).

 

The City adopted the St. Vrain Greenway Master Plan – East Corridor Update in 2001. The plan was developed with consultants, key stakeholders, and residents. It identified a trail route along the St. Vrain Creek corridor between Main Street and where St. Vrain Creek meets Boulder Creek.

 

 

Project Updates

 

February 19, 2026

• Beginning Wednesday, Feb. 25, shoulder and median closures will be in place on Highway 119 as crews start clearing and grubbing in preparation for construction.
• The Sandstone Drive closure will be extended until Thursday, Feb. 26.

 

February 6, 2026

• Sandstone Drive will be closed for reconstruction between the turn off to the Sandstone Ranch Parking Area and the Visitors Center from Saturday, Feb. 21, through Wednesday, Feb. 25. The closure is necessary to allow new concrete to properly cure.
  During this time, visitors should use the Sandstone Ranch Parking Area or parking lots at the soccer fields. The park and St. Vrain Greenway will remain accessible from those locations. Please follow posted signage for trail access.

 

January 23, 2026 

• Beginning Monday, January 26, access to the dirt trail from the Sandstone Ranch Parking Area near the Visitors Center to Sandstone Drive will be intermittently closed during active work to allow equipment access and ensure user safety.

 

December 19, 2025

• Beginning Tuesday, December 23, a portion of the Sandstone Ranch Parking Area near the Visitors Center will be closed for the duration of the project.
• Access to the trails and the Visitors Center will remain open.
• Additional parking is available at the Visitors Center and the Sandstone Soccer Complex.

 

Schedule

• Public Process – Completed, 2001 (as part of the St. Vrain Greenway Master Plan)
• Design Bid – Completed, summer 2021
• Design – Completed, February 2025
• Construction Bid – Completed, September 2025
• Construction – January 2026 to spring 2027