This is a bridge which has seen several re-buildings. The first (1756) design by ohn Smeaton(Wikipedia) was not built, but a 1770 bridge designed by William Gott was destroyed in the following year's floods. Another Smeaton design, further downriver, opened in 1781 and lasted until 1782. The present bridge of 1793, built to the earlier unused Smeaton design by Robert Mylne, has done rather better. The repeated failures of these bridges did little for the self-confidence of their builders.
There may have been a bridge at Hexham in the thirteenth century and there certainly were ferries. The Grade 2 listed bridge links Hexham with the A69 trunk road and with the North Tyne valley.
Description harvested from the excellent Bridges On The Tyne website.
See my photos of Hexham Abbey and Hexham.