The HO Scale Walthers Cornerstone Single-Track Railroad Bridge Stone Pier is just the thing for supporting Cornerstone and other single-track bridges on your layout. Based on typical cut-stone piers used from the 1800s on, this cast-resin pier is layout-ready and features highly detailed stone surfaces with realistic color and texture. As shown, this Single-Track Railroad Bridge Stone Pier measures: 4-3/16 x 1-5/16 x 5-3/16" 10.6 x 3.3 x 13.1cm.