Clarence Town Bridge over Williams River, Heritage road bridge in Clarence Town, New South Wales, Australia.

Clarence Town Bridge over the Williams River has two timber truss spans of 30 metres each, three timber approach spans at one end and one at the other, giving a total length of 116 metres. The main spans rest on twin cast iron cylindrical piers braced with iron stiffeners. The single-lane carriageway is at least 4.6 metres wide, and a timber post-and-rail guard rail runs its full length.

The structure was built in 1880 to replace an impassable ford that had previously been the only river crossing option. After sustaining damage, it was substantially rebuilt in 1926 and has remained in service since then.

The bridge is a single-lane timber truss crossing on Limeburners Creek Road, and drivers still yield to oncoming traffic on it. Its name comes from the Williams River it spans at Clarence Town, in the Hunter region. The 1880 opening drew a crowd when the wife of local MP William Johnston broke a bottle of wine under an arch.

The bridge carries Limeburners Creek Road on a single lane about 4.6 metres wide, so give way to oncoming vehicles and cross at a steady pace. It is a working road link owned by Transport for NSW, not a viewing platform; pull off the roadway before stopping to look at the trusses.

Of the 147 Old Public Works Department timber truss bridges built in NSW, only two survive; this 1880 bridge is the older one and the oldest surviving timber truss bridge in the state. Its truss design copies European timber bridges traced to the 16th-century Italian architect Andrea Palladio.