The highway crosses the Peel and Mackenzie rivers using a combination of seasonal ferry service and ice bridges . The Dempster Highway is the northernmost Highway on the continent, and the only one to cross the Arctic Circle . Although technically a highway, most of this 460 Mile Rd is only paved with groomed gravel. There is no better road on which to cross the continental divide, or to view caribou, musk oxen, Arctic wolves, and the rare gyrfalcon.