H&H is providing comprehensive engineering planning and design services for the replacement of SR A1A North Causeway Bridge, which carries SR A1A and the East Coast Greenway over the ICWW, FEC RR, and Old Dixie Highway
This project required the design of a new high-level fixed bridge and associated approaches, a new observation deck bridge emerging beneath SR A1A from the west shoreline, as well as the design of new roadway alignments and additional civil design services to address adjacent state, frontage, and access roads and railway crossings located within the project’s tight footprint.
Challenges met by the H&H team include extensive utility/railroad/marine coordination, significant right-of-way coordination required by FEC and adjacent business owners, and permitting coordination. Other scopes of services include geotechnical engineering, hydrogeology, drainage, lighting, signalization, signage, pavement marking, public involvement, maintenance, control, and vehicular and marine traffic protection.
Constructed in 1963, this movable bascule bridge spans over the Intracoastal Waterway (ICWW) and connects the barrier island to Fort Pierce mainland. In March 2014, the bridge was found to be structurally deficient and functionally obsolete. The new fixed bridge is 65-foot wide and consists of FIB-84 beams spanning 158 feet in simple spans and 184 feet in continuous spans. The new observation deck structure is CFRP prestressed slabs, bent caps, and piles.
Project Website: SR A1A North Causeway Bridge