International Bridge, Sault Ste. Marie

The bridges (rail and highway) linking the twin cities of Sault Ste. Marie, Michigan and Sault Ste. Marie, Ontario (in background), across the St. Mary's River (with shipping canals and the five locks -- four in the USA and one in Canada). The large industrial area on the Canadian side is the Algoma Steel Corporation, now Indian-owned and renamed Essar Steel Algoma.