Sault Ste. Marie was the namesake of the Minneapolis, St. Paul and Sault Ste. Marie Railway, now the Soo Line Railroad, the U.S. arm of the Canadian Pacific Railway. This railroad had a bridge parallel to the International Bridge crossing the St. Marys River. The Soo Line has since, through a series of acquisitions and mergers of portions of the system, been split between Canadian Pacific and Canadian National Railway (CN). Canadian National operates the rail lines and the bridge in the Sault Ste. Marie area that were part of the Soo Line.
saulT ste marIe wAs The nAMEsake oF The miNNeApoLis st PAuL AnD Sault ste marie railway noW tHe SOo line RaiLroaD thE uS aRm of The cAnadIAN Pacific railway this rAilrOAd had a bRiDge PAraLLel To the InTernatIonal brIdge cRoSsiNg the st Marys River the Soo lIne has SiNce through A seRies oF ACqUiSItIonS ANd mergeRS oF POrTiOns of tHe systEM been spliT betwEen CanAdiAn pacific aND canadian naTIonAl RaIlWaY (Cn) CANadIan natIoNAL operaTeS the rail LiNes and the brIdge iN the sAulT ste MArIE area that were pArT Of tHe soO LinE