The Walthers Cornerstone Railroad Bridge Stone Wing Walls are just the thing for adding retaining walls against your railroad's bridge abutments. Based on typical cut-stone wing walls used from the 1800s on, this cast-resin wall set is layout-ready and features highly detailed stone surfaces with realistic color and texture. As shown, this Railroad Bridge Stone Wing Wall set includes one left and one right angled wall and each measures: 3-3/4 x 7/16 x 4" 9.5 x 1.1 x 10.1cm.