Lennox Bridge, Glenbrook, Stone arch bridge in Glenbrook, Australia

Lennox Bridge is a single-span stone arch structure crossing Brookside Creek in Glenbrook, made entirely from local sandstone. The construction rises gracefully above the water and forms a simple but solid architectural presence in the valley.

The bridge was built between 1832 and 1833 under David Lennox's supervision and became Australia's first mainland stone arch bridge. Its construction using convict labor represented an important milestone in colonial engineering development.

The bridge is also called The Horseshoe Bridge, after the horseshoe-shaped arch Lennox designed for strength. Its keystones carry inscriptions carved by the masons: "DAVID LENNOX" on the upstream south side, weathered today, and "AD 1833" on the north side, still in very good condition. Look for them above the arch.

The site marks the start of several walking trails through the Blue Mountains and has a designated parking area for visitors. Access to the bridge is straightforward and well marked, making it a convenient stopping point for explorations of the region.

The 1976 restoration stripped the bridge back to the arch, removing the original lime-mortar damp course and most of the rubble packing, then inserted hidden concrete supports and steel girders beneath a new carriageway. New stone blocks and repairs to the arch are still legible, and the convict-cut stone channel for the creek survives, though obscured by a concrete channel poured inside it.