Union bridge is a suspension bridge that crosses the River Tweed between England and Scotland. The bridge was designed by Captain Samuel Brown who came from the Royal Navy, he was an early pioneer in bridge design. Construction of the bridge started in 1819 and it opened in 1820. Samuel Brown was the first to drive over the bridge followed by twelve heavily laden wagons.
Union bridge is the oldest suspension bridge in the world that still runs traffic on. The bridge has a span of 137 meters.