King's Highway 61, commonly referred to as Highway 61 and historically known as the Scott Highway, is a provincially maintained highway in the Canadian province of Ontario. The route connects the Pigeon River Bridge, where it crosses into the United States and becomes Minnesota State Highway 61, with a junction at Highway 11, Highway 17 and the Harbour Expressway in Thunder Bay. The highway forms part of the Lake Superior Circle Tour. Highway 61 was added to the highway system on October 6, 1937, following the amalgamation of the Department of Northern Development into the Department of Highways. Prior to that it was known as the Scott Highway. The bridge over the Pigeon River was originally known as The Outlaw, as it was constructed without formal approval of the Canadian or American governments. Route description Crossing the American border, the Pigeon River Bridge is west of the Sault Ste. Marie International Bridge and east of the Fort Frances-International Falls International Bridge, and is near a visitor center. Highway 61 begins at the Ontario-Minnesota border at the Pigeon River; the road continues south to Duluth as State Highway 61 on the American side. Proceeding north from the border, the route passes the customs station and curves to the north. Passing its former routing along Highway 593, the highway curves eastward to avoid mountains. It zig-zags around a range of mountains, eventually turning northward and passing to the west of Cloud Bay. The highway continues north for through Neebing, running between mountain ranges on either side. It rises at Moose Hill, meets Highway 608 and enters one of the few agricultural areas in northwestern Ontario. Shortly thereafter, Highway 61 curves to the east, passing the southern terminus of Highway 130 along the way. It then enters the outskirts of Thunder Bay. The highway passes Chippewa Road, its former route through Thunder Bay, and returns to its northward orientation. It officially enters the city as it crosses the Kaministiquia River. The highway swerves east at Thunder Bay International Airport as it widens to four lanes then continues north, crossing Arthur Street. North of Arthur Street, the highway is also known as the Thunder Bay Expressway. It continues north for and ends at the Harbour Expressway and Trans-Canada Highway. The northernmost section in Thunder Bay is a four-lane, undivided expressway. The remainder of Highway 61 is a conventional two-lane highway. Traffic volumes along the