According to Wyoming Area Manager Coleman W. Smith, the purpose for the road closure is to accommodate modifications to Guernsey Dam.

"The modifications are in response to Reclamation's safety of dams recommendations and will ensure structural integrity of Guernsey Dam should a large flood event occur," Smith said.

Moltz Constructors, Inc., of Cody, Wyo., will complete the modifications under a contract with Reclamation. The temporary closure will continue during the construction work, which is scheduled to be completed in March 2014.

Guernsey State Park will remain open throughout the construction period, with the exception of the day use area below the dam. Recreation facilities on the south side of the reservoir will continue to be accessible via Lakeshore Drive. Because Lakeshore Drive will be closed at the dam, recreation facilities on the north side of the reservoir will be accessible by taking Highway 270 north from Guernsey to Hartville, then Highway 317 to Lakeshore Drive at the north entrance to the park.