Brooklyn Bridge, Road bridge in New South Wales, Australia

The Hawkesbury River Road Bridge carries traffic across the river between Kangaroo Point and Mooney Mooney Point as part of the Pacific Motorway. The structure features three lanes in each direction and spans the waterway with a gradual descent from the southern to the northern bank.

The Hawkesbury River Road Bridge opened in two stages: the three northbound lanes in August 1973, and the southbound approaches in October 1973, completing the full width. Until then, from 1968, freeway traffic had to leave the motorway and cross the river on the Peats Ferry Bridge, opened in 1945. The new bridge linked the freeway sections north to Mount White (opened December 1965) and south to Berowra (opened December 1968).

Locals call the Hawkesbury River Road Bridge the "Brooklyn Bridge", after the suburb of Brooklyn on the southern bank near Kangaroo Point. The name distinguishes it from the adjacent Peats Ferry Bridge, which carries the Pacific Highway and allows pedestrians and cyclists, unlike the motorway bridge.

The bridge is easily accessible via the Pacific Motorway and clearly marked. Visitors wanting to view the structure should note that this is an active traffic corridor and safe vantage points are recommended.

The deck falls on a 2.1% gradient, from 21 metres above water at the southern bank to seven metres at the northern bank. The 616-metre span was the first bridge in the world built of open steel trough girders, with foundations set on rock up to 85 metres below water level.