Junction of Highway # 16 The Yellowhead Route The British Columbia Stewart-Cassiar Highway Highway #37 runs from the junction of Highway #16 'The Yellow Head Route', north to the Yukon border, with access to the Trail of the Totems, BC. The Spatsizi Plateau Provincial Wilderness Park, BC. - Stikine River Provincial Recreation Area, BC. - Mount Edziza Provincial Park, BC. - Atlin Provincial Park, BC. - and Tatshenshini-Alsek Provincial Wilderness Park. - NOTE On this Highway Travel Guide, we have listed most roadside turnouts, both gravel and paved with and without services. 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.