Kelso Bridge, built between 1800 and 1803, carries the A699 over the Tweed at the southern edge of town. It replaced an earlier bridge that collapsed in a storm in 1797, and the town got the better end of the deal. John Rennie the Elder designed it as five elegant elliptical arches in dressed stone, with Doric columns decorating the piers at water level — a bridge that is visibly trying to be beautiful as well as functional.
It is a Category A listed structure, and deserves a look from the riverbank below as well as from the road on top. The path along the south bank of the Tweed here is an easy walk, with views back towards the abbey ruins and across to the Floors Castle estate. The river below the bridge is good salmon water — if conditions are right you may see anglers working the pools.