 The Western Distributor was opened in stages starting in September 1972, with the last stage being the Anzac Bridge which was opened in December 1995.The distributor also replaces the former congested route out of the city via the Pyrmont Bridge (closed in 1988) and the Glebe Island Bridge (closed in 1995 with the opening of Anzac Bridge).The north-eastbound viaduct ramps leading towards Bradfield Highway, designed in 1967, was widened from to accommodate a deck with a variable width from and consists of a steel structure supported on reinforced concrete corbels.