Bridges in general; Bridges characterized by the cross-section of their bearing spanning structure; Arch-type bridges; Truss-type bridges; Suspension or cable-stayed bridges; Movable or portable bridges; Floating bridges; Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aquaducts, bridges for supporting pipe-lines; Structural or constructional details of bridges;Methods or apparatus specially adapted for erecting or assembling bridges; Methods or apparatus for repairing or strengthening existing bridges.
