Lower Sugarloaf Key

Lower Sugarloaf Key is the lower arm of an island known as Sugarloaf Key in the lower Florida Keys about 13 miles east of Key West. U.S. 1 crosses the key at about mile markers 16.5–17.5. Due to the routing of U.S. Route 1, it appears that Upper Sugarloaf Key and Lower Sugarloaf Key are separate islands, but they are actually one large U-shaped island.
Data from: en.wikipedia.org