The Straits of Mackinac Shipwreck Preserve are divided in two by a bridge spanning how long?
Straits of Mackinac Shipwreck Preserve The Straits of Mackinac Shipwreck Preserve is a 148 sqmi state preserve in and around the Straits of Mackinac. The preserve is divided in two by the Mackinac Bridge. The waters of the preserve include the waters offshore from Mackinaw City and St. Ignace, as well as all or part of the shorelines of Bois Blanc Island, Mackinac Island, Round Island, and St. Helena Island.
McClay's Twin Bridge (East) Maclay's Twin Bridge (East) is a historic multi-span stone arch bridge spanning a tributary of Conodoguinet Creek between Lurgan Township and Southampton Township in Franklin County, Pennsylvania. It is a 105 ft bridge, with two spans each measuring 20 ft long. It was constructed in 1827 and is a twin of McClay's Twin Bridge (West).