MacDonald River bridge, St Albans, Heritage road bridge in St Albans, Australia.

The MacDonald River Bridge is a two-span road crossing over the waterway that uses cylindrical iron piers connected by metal cross bracing for support. The structure sits on these foundation elements and carries local traffic across the river in New South Wales.

Built between 1901 and 1903 by John Ahearn and Sons of Burwood for A£7290 6s 11d, the bridge replaced an unsafe earlier crossing and opened to traffic in February 1903. At its opening it was named Norton Bridge by Minister for Works Edward William O'Sullivan after MP John Norton, a forceful advocate for its construction.

At its opening in February 1903, Minister for Works Edward William O'Sullivan named the bridge Norton Bridge after MP John Norton, who had pressed for its construction. The name is rarely used today. The bridge stands near a popular pub that draws tourists from Sydney.

The crossing is reached via St Albans Road and carries regular vehicle traffic across the river. Access is straightforward as the bridge forms part of the main local road network.

At its opening in February 1903 the bridge was called "the largest composite truss span without overhead bracing yet erected in the state". It was named Norton Bridge by Minister for Works Edward William O'Sullivan after MP John Norton, who had pushed for its construction; the name is rarely used today.