The Straits of Mackinac Shipwreck Preserve are divided in two by a bridge spanning how long?
Mackinac Bridge The Mackinac Bridge ( ) is a suspension bridge spanning the Straits of Mackinac to connect the Upper and Lower Peninsulas of the U.S. state of Michigan. Opened in 1957, the 26372 ft bridge (familiarly known as "Big Mac" and "Mighty Mac") is the world's 19th-longest main span and the longest suspension bridge between anchorages in the Western Hemisphere. The Mackinac Bridge is part of Interstate 75 and the Lakes Michigan and Huron components of the Great Lakes Circle Tours across the straits; it is also a segment of the U.S. North Country National Scenic Trail. The bridge connects the city of St. Ignace on the north end with the village of Mackinaw City on the south.
William H. Harsha Bridge The William H. Harsha bridge is a cable-stayed bridge carrying U.S. Route 62 and U.S. Route 68 that connects Maysville, Kentucky, and Aberdeen, Ohio, over the Ohio River. It is named for William Harsha, who represented the Ohio portion of the area in the United States House of Representatives. Construction on the bridge started in 1997 and it opened in 2000. The bridge has a main span of 1050 feet (320 meters) and a total span of 2100 ft . The Simon Kenton Bridge, a suspension bridge built in 1932, is nearby.