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Frequently Asked Questions

Picture of a Florida Roadway

Q: How was the new bridge selected and what type of bridge is being proposed for the replacement bridge?
A:  The Project Development and Environment (PD&E) Study considered several alternatives, including low and mid-level movable bridges and a fixed high-level bridge. These bridge types were analyzed with several horizontal alignment options. Based on the PD&E Study, the preferred alternative is a high-level fixed bridge and was finalized upon receipt of Location and Design Concept Acceptance (LDCA) by the Federal Highway Administration in November 2018. The new bridge will be a 4,152.5 ft. high-level fixed bridge crossing over the FEC Railroad corridor, Old Dixie Highway, and the Intracoastal Waterway.


Image showing a rendering of the new high-level, fixed bridge


Q: What is being studied?
A: The SR A1A North Causeway Bridge (Bridge Identification Number 940045), which is a movable bridge located in St. Lucie County that was constructed in 1963. It spans over the Intracoastal Waterway (ICWW) connecting the barrier island to the mainland in the City of Fort Pierce.


Q: Will there be improvements to navigation through the channel?
A: Navigation clearances of the new bridge at the main channel will be 125 ft. horizontal (existing is 90 ft.) and 85 ft. vertical (existing is 25 ft. in closed position).

Q: What is the approach to construction and how will it affect vehicular and boat traffic?
A: The new SR A1A bridge will be constructed on a parallel alignment to the north of the existing bridge. Two lanes of traffic will be maintained throughout all phase of construction along SR A1A. Marine traffic will be maintained at all times.


Q. What is the estimated construction cost?
A: The estimated construction cost is $79M.