The old Seven Mile Bridge hasn't carried car traffic since 1982.
But the span from Knight's Key to Pigeon Key has become a kind of linear park for the Middle Keys, offering spectacular sunset views.
"We're fortunate to be able to have the bridge that we can walk out on," said Leslie Christensen of Marathon. "It think it attracts a lot of tourists and a lot of people like to come and take pictures. It's a real iconic part of Marathon."