The Union Bridge spans the River Tweed between Horncliffe, Northumberland, England and Fishwick, Berwickshire, Scotland. In so doing, the Bridge also spans the border between England and Scotland. When it opened in 1820 it was the longest wrought iron suspension bridge in the world with a span of 449 feet (137 m), and the first vehicular bridge of its type in the United Kingdom and indeed in the world. Today it is still the oldest suspension bridge in the world still carrying road traffic.

In 2012, the Trust were involved in discussions between Northumberland County Council and Scottish Borders Council to renovate the Bridge prior to its 200th Anniversary in 2020 and carried out the initial work to establish the various ownerships of the land on either side and the various sections of the river bed. Both Councils are now working together to complete this restoration and hope to have the work done by the end of 2021.
To view the progress so far, The Friends of the Union Chain Bridge are monitoring this on their website- https://www.unionbridgefriends.com/

Berwick Preservation Trust are funding a time capsule that will be buried on the English side of the Border at the Bridge.