Menangle Railway Bridge, Railway bridge in Menangle, Australia

Menangle Railway Bridge carries the Main Southern line across Menangle Road and the Nepean River at Menangle. Since 1907 intermediate brick piers have divided the three original 49.4-metre spans into six of 24.2 metres, alternating with the 1862 sandstone piers. Two wrought-iron box girders, 3.8 metres deep and continuous from abutment to abutment, carry a double track; the curved angle irons on their outer faces are decorative, not arched.

Construction was completed in 1863 under engineer John Whitton's direction, marking a turning point in Australian railway infrastructure. It became the first major iron railway bridge built in New South Wales, introducing advanced construction methods to the colony.

Local brickmaker John Hourn, whose farm stood on the east bank of the Nepean near the crossing, made by hand the bricks used in the bridge; he also supplied bricks for the district's Church of England. The bridge opened with the Campbelltown to Picton line on 1 July 1863, and its 1863 ironwork still carries trains today.

The bridge sits on an active railway line, so visitors should stay at safe viewing distances and be aware of train traffic at all times. The structure is best observed from nearby roads or designated viewpoints rather than attempting to access the tracks directly.

The ironwork was shipped from Birkenhead in December 1861, but one of the two vessels was wrecked at the mouth of the Mersey; replacement iron reached Sydney in December 1862. Local farmer John Hourn made by hand the bricks used in the bridge, and also supplied bricks for the district's Church of England.