Estuary and Dune Crossover Boardwalks John D. MacArthur Beach State Park

WGI provided complete design and permitting for 1,600 linear feet of estuary boardwalk rehabilitation and 1,200 feet of dune crossover boardwalk rehabilitation located at John D. MacArthur Beach State Park.

The project entailed the restoration of components of the existing causeway boardwalk (bridge). The bridge was constructed with a concrete pile and pile cap substructure and a heavy structural timber truss superstructure with structural steel plate connections. The following bridge elements were identified to be rehabilitated: exposed portions of the concrete piles, concrete pile caps, connections between the timber superstructure, horizontal top and bottom truss chords, vertical truss members, diagonal truss members, steel fasteners and gusset plates, splice connections, transverse crossbeams, longitudinal joists, and the top rail boards. Within each work section, the decking boards were replaced in kind with pressure-treated southern yellow pine. Edge decking board hold-downs were indicated to be removed and reinstalled.