Road side highway turnout Scenic view turnout, no services. West side of highway. Photo looking west at the Isskut River, B.C. Driving north on the Cassiar Highway, B.C. The Stewart-Cassiar Highway The Stewart-Cassiar Highway runs from the junction of Highway #16 (The Yellowhead Route) north to the Yukon border and connects with The Alaska Highway.This highway offers some of the most awe-inspiring scenery, with wild rivers, deep canyons and wildlife that you will encouter along the way.