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.
ETR Big Island Bridge The ETR Big Island Bridge is a Pratt through truss bridge located near Green River, Wyoming, which carries Sweetwater County Road CN4-4 across the Green River. The bridge was built from 1909 to 1910 by contractor Charles G. Sheely. It was named the Big Island Bridge after the Big Island region of Wyoming, which the bridge connected to other parts of the state. The 352 ft , two-span bridge is one of the older Pratt through truss bridges in Wyoming, and its spans, each 155 ft long, are some of the longest on bridges of this design in the state.