Scope of Rehabilitation

As documented in the inspection study described in the Final Environmental Impact Statement, the condition of the existing bridge warrants an extensive bridge rehabilitation. The rehabilitation efforts will blend with the ornate architecture of the existing bridge while maintaining current bridge design requirements.

Superstructure elements including the bridge deck, interior steel framing elements, and bridge railing will be replaced. Rehabilitation efforts will focus on repairing the existing arched steel plate girders to be re-used in the rehabilitated structure. Introduction of interior steel stringers, parallel to the arched steel plate girders, will lessen the design loadings carried by the rehabilitated arched steel plate girders. Current load limits will be removed due to the increased load carrying capacity of the rehabilitated superstructure. Substructure elements including the reinforced concrete piers, abutments and associated foundations will be removed in their entirety due to advanced deterioration and overall poor quality of concrete.

The following is a brief summary of the major elements of work that will be accomplished as part of the rehabilitation project.

1. Remove and replace all approach piers and associated foundations with piers designed for     current scour and ship impact requirements.
2. Remove and replace abutments and associated foundations.
3. Rehabilitate bascule piers including all concrete surfaces, observation towers, and bearing     seats.
4. Strengthen existing bascule pier foundation to increase load capacity and accommodate     current scour and ship impact requirements.
5. Replace the superstructure and widen the travel lanes from 10 feet to 11 feet.
6. Remove, rehabilitate, and re-use approach span arched steel plate girders.
7. Remove and replace existing bascule span steel framing and deck.
8. Replace existing handrails, light poles, and light fixtures with elements similar to the     original elements from 1927
9. Replace the bascule machinery and all electrical components and wiring that operates the     moveable span.
10. Provide a safety barrier between the edge of the travel lanes and sidewalk.
11. Replace the fender system to provide improved resistance to ship impacts.
12. Re-align the eastern approach roadway to provide a safer alignment for vehicular        traffic.
13. Construct a Temporary Bridge to carry vehicular and pedestrian traffic between        Downtown City of St. Augustine and Anastasia Island during construction.
14. Restore park approaches; create new gateway park on east approach; and enhance        overall urban design.