EXPERIMENTAL PORTLAND CEMENT CONCRETE SHOULDERS DESIGN AND CONSTRUCTION

A picture history is presented together with diagrams which illustrate details of the concrete shoulders. Five, 6- and 7-inch shoulders with and without wire mesh were expected to encompass shoulder structural requirements. A tied, longitudinal joint was provided between the mainline pavement and the shoulder slabs to prevent faulting and to permit separate construction of the shoulders. An intermediate, 25-foot joint was required in the sections without wire mesh. Neoprene joint seals were used on this project. Heavily corrugated rumble strips were formed into the shoulder concrete to deter their use as travelling lanes.