IREA is rebuilding 8.5 miles of transmission line in north Park County. The work is part of a long-term rebuild of the transmission line between Conifer and Park County to increase capacity and improve reliability.

The work will upgrade the existing 44-kilovolt line between the west side of Kenosha Pass near Jefferson and the Roberts Tunnel Power Generation Station near Grant to 115 kilovolts. A new Roberts Tunnel substation will replace both the Grant and existing Roberts Tunnel substations.

The area’s terrain requires the use of helicopters and track-mounted drill rigs. Much of the work will be visible along U.S. Highway 285.

The project required approval from the U.S. Forest Service, Bureau of Land Management, Park County, and the Colorado State Land Board. It is scheduled for completion in the fall of 2021.