road to nowhere: seven mile bridge

The Florida Keys are a series of islands connected by the Overseas Highway and a number of bridges, the most famous of which is the Old Seven Mile Bridge.  It spanned the gap between Knight's Key and Little Duck Key and only half is safe for pedestrians.  Pigeon Key, a little island resting near the center of the bridge,  served as a home base for the workers who built the bridge and is now a museum, but we didn’t much feel like walking the 3.5 miles in the humidity to get there or pay for a ferry to get out there.  The Old Seven-Mile Bridge has now replaced by a wider, more modern version, impossible for pedestrians to traverse due to the zooming traffic.