History of Secondary Highway 668:
Secondary Highway 668 is a local highway that serves as an access road from Highway 11 to Greenwater Provincial Park west of Cochrane. The Greenwater Park Road was first designated as Highway 668 in the early 1980s. In March 1983, a Preliminary Assumption Plan was prepared by the Ministry of Transportation and Communications (MTC) which showed the planned assumption of the Greenwater Park Road as a new Secondary Highway. A portion of the proposed route from the small rural community of Hunta southerly to the Highway 11 Junction was in fact a historical alignment of Highway 11 up until the 1950s. As a result, the section of Highway 668 lying south of Hunta was already under the Ministry's jurisdiction. The Preliminary Assumption Plan was registered on March 31, 1983, and the entire route from the Highway 11 Junction northerly to the Greenwater Provincial Park Entrance was formally designated as Secondary Highway 668 by an Order-in-Council dated April 8, 1983. The highway is reportedly gravel-surfaced now, although it was paved when I last drove the route in 2007. Unless posted otherwise, the speed limit on Highway 668 is 80 km/h (50 mph). There are no services available on this highway.