Abstract: A lattice panel (P1) for a bridge has only a single chord (C1), along one side (S1), with no chord along the opposite side (S2), resulting in a cost and weight saving when two such panels are stacked in one plane. A lattice (L) of web members (W) comprises: either n+1 perpendicular web members (Wp1-3) at n+1 "first" nodes (N1. 1-N1.3) or n perpendicular web members (Wp1, Wp2) at all but an end one of n+1 "first" nodes (Wp1, Wp2); 2n "first" oblique web members (Wo1-Wo4) and 2n "second" web members (Wo5-Wo8) form two quadrilateral structures between the n+1 "first" nodes (Wp1, Wp2). Two "fourth" nodes (N4.1, N4.2) are formed by the tops of the quadrilateral structures, for connection to a second chord or to corresponding nodes of a like panel.

Abstract: A pin and wedge combination for connecting together adjoining lattice bridge panels (M) is characterised in that the pin (P) has a plurality of diametric slots (S) spaced along its axis and with ends which overlap in the general direction of the axis. Additionally, the wedge (W) is curved and resiliently deformable in a plane perpendicular to its depth whereby the wedge is insertable by deformation into any selected one of the slots (S) and thereafter resiliently engages spaced points of the sides of that slot so as to be self-retaining therein.