The Bridge and Tunnel Operators Association (BTOA) is a binational membership organization representing the international bridge and tunnel crossings between the Province of Ontario and the States of Michigan and New York.

Together our member organizations facilitate the annual movement of over $365 billion dollars of trade between the United States and Canada, with service to approximately 28 million vehicles, including 24 million automobiles and almost 4 million trucks/commercial carriers annually. These impressive figures consist of goods and travelers from nearly every province and all 50 states.

Current members of the BTOA include the: Blue Water Bridge Authority, Buffalo and Fort Erie Public Bridge Authority, Detroit Windsor Tunnel LLC, Michigan Department of Transportation, Niagara Falls Bridge Commission, Ogdensburg Bridge and Port Authority, Sault Ste. Marie Bridge Authority, Seaway International Bridge Corporation, Ambassador Bridge, and the Thousand Islands Bridge Authority.