Windsor Cedar Wood Bridge, WGB-60, 28" W x 18" H x 60" L All cedar bridge decking boards are joined by wood dowels and then glued and screwed to the cross span to prevent loose boards from heavy foot traffic as well as outdoor weathering. The side rails and posts are secured to the bridges using galvanized nuts and bolts. Traditional arch garden bridge design with standard cedar post caps. All post caps are finished with decorative round moldings at the base. We use full 2" thick and 4" wide white cedar lumber to build our bridges span for heavy load capacity. 2 x 2 full size hand rails are boxed-in with the cedar posts. The boxed-in solid cedar posts are 3 1/2" by 3 1/2" wide. Finished with tung oil, the most stable natural oil in the market for outdoor finishing.