BELLA VISTA TRANSVERSELY STRESSED M-LOCK TWIN BRIDGES

The recently constructed Twin Bridges at Sella Vista, Sydney, is the first bridge to be constructed incorporating new developments in the precast M-Lock bridging system. The M-Lock bridging system has recently been modified to include transverse and longitudinal stressing of the deck units, which has addressed current limitations and restrictions placed on precast modular bridges by the Australian Road Authorities. This modification has made the M-Lock bridging system accepted by the Australian road authorities for unrestricted use on highways. This paper will describe the development of the M-Lock bridging system with specific references to the Bella Vista Twin Bridges. (a) For the covering entry of this conference, please see ITRD abstract no. E209607.