CR 314 Idaho Springs to Veterans Memorial Tunnel

The Greenway Trail is closed to all pedestrians until construction concludes.

Work this Spring

Beginning May 5, County Road 314, the frontage road adjacent to I-70 in the Idaho Springs area, will be fully closed to all traffic from just east of the wastewater treatment facility to Doghead Rail Bridge at the Game Check Station Trailhead (milepoint 1.06 to 1.26, indicated by the red dotted line on the map below) The full closure is necessary to construct retaining walls, curb and gutter, and a new storm sewer system along this section of CR 314. The closure will remain in place for at least six months. Motorists should also expect alternating, single lane traffic on the west side of the closure point between both entrances to Whitewater Road (indicated by the orange dotted line on the map below).

The detour route around the full closure is listed below.

  • The County Road 314 Improvements Project begins at milepoint 0.00 and extends approximately 1.3 miles
    east of Idaho Springs to the Doghead Rail Bridge Trailhead. The project began in early October of 2021 and
    is expected to be completed in September 2023. Improvements to CR 314 include widening the roadway to
    include curb and gutter, a new pedestrian bridge over Clear Creek, relocation of the Scott Lancaster
    Memorial Bridge to a spot along the existing trail, and construction of a new shared use trail for pedestrians
    and bicyclists.

Traffic impacts

  • FULL closure of CR 314 between MP 1.06 and 1.26
  • Alternating, single lane traffic along CR 314 between both entrances to Whitewater Road

Detour Route

  • To access businesses or properties on the west side of the closure point:
    • Motorists will need to approach CR 314 from the west side via Exit 241 off of I-70.
  • To access businesses or properties and the Doghead Rail Bridge Trailhead parking lot on the east side
    of the closure point
    • Motorists will need to use I-70 Exit 243 to access CR 314

CR 314 Full Closure Map

About the Project:

The Colorado Department of Transportation will begin construction on County Road 314 from east of Idaho Springs to the Veterans Memorial Tunnels in early October 2021. Crews will work to enhance the existing road and add improvements. American Civil Constructors has been selected for this project, with work expected to be completed in summer 2023.

The project is located at Mile Point 0 and extends 1.3 miles east to MP 1.26. Work will include road widening and paving, installation of retaining walls and guardrails, a pedestrian path and bridge over Clear Creek, drainage improvements, erosion and traffic control management, and signing and striping. Traffic impacts expected on the project include shoulder closures, single lane closures, and alternating traffic along CR 314.

The CR 314 pedestrian bridge along the Lancaster Trail will be placed on the east side of the treatment plant in early November. The bridge setting will take three days, and will connect CR 314 to the Lancaster and Greenway Trail. The bridge construction will continue through the end of November.

Work Schedule

  • Crews will be working Monday through Friday between the hours of 6 a.m. to 7 p.m. on CR 314 at MP

Traffic Impacts

  • Full closure of CR 314 between MP 1.06 and 1.26

  • Alternating, single lane traffic along CR 314 between both entrances to Whitewater Road

Project Facts

  • Cost: $8.7 Million
  • Contractor: American Civil Constructors
  • Timeline: October 2021 - September 2023
  • Location: on Clear Creek County Rd 314 from east Idaho Springs to the Veterans Memorial Tunnels. Located from MP 0.0 to 1.26

CR 314 Map

Click image to enlarge.