Seven Mile Bridge
An 11-km bridge across open sea linking Marathon and Little Duck Key, with the old bridge alongside converted into a walking and cycling path.
The new Seven Mile Bridge, completed in 1982, stretches about 10.9 km and is the most spectacular section of the Overseas Highway (US-1), with brilliant blue water shifting between deep and shallow on both sides. The original bridge, built in 1912, is part of Flagler's railway heritage. After restoration, a roughly 3.5-km section is open to walkers and cyclists and leads to Pigeon Key. Driving across the new bridge is free. The entrance to the old bridge is at the Marathon end, where there is a parking lot. The bridge is about 75 km from Key West and is often the highlight of a road trip along the Overseas Highway.
Opening hours
Open all day
Nearby sights
- Bahia Honda State Park
- Pigeon Key
- The Turtle Hospital
- National Key Deer Refuge
- Looe Key Reef
- Key West Tropical Forest & Botanical Garden
- Fort East Martello Museum
- Smathers Beach