The Macleay River Bridge is a road bridge over the Macleay River and its floodplain near the settlement of Frederickton, New South Wales, Australia. The bridge is part of the Pacific Highway new alignment which bypasses Kempsey and Frederickton. The 3.2 kilometres (2.0 mi) long bridge carries four lanes of traffic; two lanes in each direction, each lane 3.5 metres (11 ft).It is currently the longest road bridge in Australia. The bridge is constructed of 941 concrete beams supported by 93 piers.