Treasure Island Causeway

Treasure Island Causeway is a road bridge in Pinellas County connecting the mainland to barrier islands. It comprises three linked sections including two fixed structures and a central bascule drawbridge that opens for boat traffic.

Built in 1939, the causeway served as a toll bridge for 76 years before becoming free passage in 2006 through federal funding. This change made it far more accessible for everyday commuters and beach visitors.

The causeway links the mainland to barrier islands and serves as the primary route for residents and visitors heading to Gulf Coast beaches. People naturally use it as a gateway between urban areas and the quieter seaside communities.

The four-lane bridge allows smooth car traffic while permitting the drawbridge to open for boats, which may cause brief delays. It is best to travel during off-peak hours to avoid traffic congestion common during tourist season.

Despite being located within St. Petersburg city limits, the causeway is owned and operated by the City of Treasure Island through an early municipal agreement. This unusual arrangement allows a smaller coastal community to manage a major transportation link.

Location: Pinellas County

Official opening: 1939

GPS coordinates: 27.77080,-82.75340

Latest update: December 12, 2025 16:40