International Bridge Authority Sault Ste. Marie is a comprehensive historical account detailing the conception, construction, and operation of the International Bridge connecting Sault Ste. Marie, Michigan, and Sault Ste. Marie, Ontario. The book delves into the political, economic, and engineering challenges faced during the bridge’s planning stages, highlighting the collaboration between Canadian and American authorities. It explores the significance of the bridge as a vital transportation link, fostering cross-border trade, tourism, and cultural exchange between the two cities. Through detailed narratives, photographs, and official documents, the book chronicles the efforts of the International Bridge Authority, the organization responsible for overseeing the bridge’s maintenance and administration. Readers gain insight into the bridge’s impact on regional development, the evolution of toll systems, and the ongoing commitment to safety and modernization. The book also features personal stories from workers, engineers, and local residents, offering a human perspective on this monumental infrastructure project. Rich in historical context and technical detail, International Bridge Authority Sault Ste. Marie serves as both a tribute to international cooperation and a valuable resource for those interested in civil engineering, transportation history, and North American cross-border relations.