Expansion joint and seal

Abstract From the Canadian patent

Abstract of the Disclosure An expansion joint adapted to, overlie and sealingly close an expansion gap between roadway bridge sections or the like and comprising an elastomeric membrane having an upstanding arch disposed across the gap. The arch has a corrugated con . figuration with the corrugations thereof extending laterally across the gap to impart substantial flexibility to the membrane so. as to accommodate relative movement of the roadway sections in each of the vertical longitudinal, and lateral directions. Side rails overlie the side edges of the membrane and anchor the membrane between the road sections.