The old seven mile bridge down in the Florida Keys is an interesting site to see. Jim and I visited the Bahia Honda State Park a few years ago at sunset and took several pictures of this historic site. This is a beautiful park to visit and by no means is the old bridge the only thing to see but this was definitely a beautiful time to visit and photograph.
The workers that built the old Seven Mile Bridge stayed on Pigeon Key (an island accessible by boat only) while building the bridge for the railroad magnate, Henry Flagler. The old concrete bridge was built from 1908 to 1912.
This photo showing both pieces of the bridge that can be seen while visiting the Bahia Honda State Park, Big Pine Key located in the Florida Keys. The sun is just about to set in this silhouette photo of the bridge.