A composite structural panel is provided. The panel comprises a top reinforced fiber layer, a top infusion medium layer, a core, a bottom infusion medium layer, and a bottom reinforced fiber layer. The composite structural panel is infused with a potting material, preferably an epoxy resin, that extends throughout the composite structural panel to provide composite action. The wood core comprises wood beam elements aligned in the longitudinal direction relative to the steel beams or girders of a supporting frame. Mechanical and chemical means are utilized to connect the composite structural panel to the supporting frame.