Allanburg is the capital of the City of Thorold, Ontario, Canada. It is located on the Welland Canal and Highway 20, both important transportation routes through the Niagara Peninsula. The two cross at a vertical-lift bridge, numbered as Bridge 11 by the Saint Lawrence Seaway Authority, but often known simply as the Allanburg Bridge. The collision of the ship Windoc with the bridge made national news in 2001.