The Overseas Highway is a 113-mile highway carrying U.S. Route 1 through the Florida Keys to Key West. Large parts of it were built on the former right-of-way of the Overseas Railroad, the Key West Extension of the Florida East Coast Railway. Completed in 1912, the Overseas Railroad was heavily damaged and partially destroyed in the 1935 Labor Day hurricane. The Florida East Coast Railway was financially unable to rebuild the destroyed sections, so the roadbed and remaining bridges were sold to the state of Florida for $640,000.
Since the 1950s, the Overseas Highway has been refurbished into a main coastal highway between the cities of Miami and Key West, offering travelers an exotic roadway through a tropical savanna environment and access to the largest area of coral reefs on the U.S. mainland. Many exotic animals such as the American Alligator, American Crocodile and Key Deer inhabit the tropical islands of the Florida Keys.
Wikipedia https://en.wikipedia.org/wiki/Overseas_Highway
More information http://www.fla-keys.com/highway.cfm
Address 13981 Overseas Hwy, Marathon 33050, United States
Coordinates 24°44'42.028" N -80°59'12.862" E