Ontario Highway 634

Ontario Highway 634

Secondary Highway 634, also known as Highway 634, is a remote highway that travels through Northern Ontario from its southern terminus at Highway 11 in Smooth Rock Falls, Ontario to the Abitibi Canyon Generating Station at the community of Abitibi Canyon, Ontario.

It is the second highway in Ontario to be named Highway 634 (with the original Highway 634 being near Sudbury). Its original designation was Highway 807, but was renumbered in 1977, shortly after a route renumbering. The road was re-aligned around the eastern part of Smooth Rock Falls in the mid-1990s.

Although the 2003 Ontario Official Road Map shows the road as completely paved for its entire length, the northernmost 15 kilometres (9.3 mi) are gravel-surfaced. There are no gas stations on this road, aside from in Smooth Rock Falls.