The glulam deck panels typically span transversely across the full bridge width. The deck panels consist of vertically laminated lumber, usually 115 or 180 mm thick and 1.22 m wide. The panels are placed side-by-side, and the joints are sealed with a bituminous sealer to provide a watertight deck surface. Glulam deck panels of this type are also commonly used on steel stringers and are becoming increasingly popular for deck replacement on steel truss bridges. The panels are attached to the beams through the use of mechanical fasteners.