Question: The Straits of Mackinac Shipwreck Preserve are divided in two by a bridge spanning how long?
Sentence (from "Mackinac Bridge"): 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.
Relevant evidence: Yes