Peats Ferry Bridge, Steel bridge over Hawkesbury River, New South Wales, Australia

Peats Ferry Bridge is a steel truss bridge across the Hawkesbury River between Kangaroo Point and Mooney Mooney Point. Its two welded K-truss spans, each 134 metres long, were the longest of their kind in the world when built. North of them are eight long and eight short steel girder spans, and a 220-metre causeway continues to the northern bank.

Construction finished in 1945 and replaced a ferry operation that had been running since 1847 at this crossing. The bridge provided a direct land route after rail transport had already arrived in the region years before.

The name recalls George Peat's ferry, which crossed here from 1847 until the 1890s and was briefly reinstated in 1930 while the bridge was pending. Two plaques at the south abutment commemorate the 1945 opening and the skill of the builders. A toll was once collected at the Mooney Mooney Point end.

The bridge carries one lane in each direction of the Pacific Highway (B83) and also admits pedestrians and bicycles. It gives access from the motorway to Brooklyn and Mooney Mooney, and to Mount White. The adjacent Brooklyn Bridge, opened in 1973, carries the six-lane Pacific Motorway (M1). Both are maintained by Transport for NSW.

During construction the caisson pier was driven to a depth of approximately 75 meters below water level, nearly matching the world record for bridge foundation depth at that time. This engineering effort demonstrates the technical challenges faced in crossing this wide river.