The Bridge over the Greenough River on McCartney Road Greenough, is the oldest timber bridge still in use on a public road. The five span bridge was built by convict labour in 1864 making it over 150 years old. The masonry piers are the original ones built from local stone. The original sawn timber beams are still in place but additional beams were added during the Second World War to strengthen the structure.
After the flood in 1988 some further repairs were carried out and in 1999 crossing the bridge was curtailed for a couple of days due to rising waters.
The bridge is a lifeline to people on both sides of the river but in particular to those who live on Company Road. To the people of Greenough is is always part of the landscape.
On the morning of 17 January 2006, the pylon on the west end of the bridge collapsed. The river had come down in flood following heavy rains associated with a cyclone.
Restoration commenced in 2007 but was delayed when a further flood washed away some of the pylons in February 2008. Repairs were again continued and the Bridge was reopened in March 2010.