Alberta Provincial Highway No. 16, or the Yellowhead Highway, is the main east-west highway traversing central Alberta, Canada. It is designated a core route in Canada's National Highway System and forms the Yellowhead branch of the Trans-Canada Highway. Highway 16 spans approximately 634 km (394 mi) from Alberta's border with British Columbia in the west to its border with Saskatchewan in the east. As of 2010, all but less than 96 km (60 mi) of the route was divided, with a minimum of two lanes in each direction.