Preston Bridge

Preston Bridge, dated 1770 with later repairs, is a three-arched, humped-back bridge designed in the style of William Adam, spanning the Whiteadder Water, with the largest arch at the center. The parapets are made of pointed red sandstone rubble, while the spandrels are constructed from coursed and squared red sandstone rubble, featuring sandstone ashlar dressings. The bridge has segmental-arched openings with flush voussoirs and raised outer bands that include central keystones; the keystone on the southern side, to the outer left, is dated '1770'. The soffits and abutments are made of coursed rubble.

There are empty circular niches centered in the northern spandrels, while the southern spandrels display carved floral detail in the niches. Below the coped parapets, there are mutuled string courses, and weathered, square-plan panels are aligned above the keystones. The bridge features coursed sandstone cutwaters with stepped bases flanking the central opening. At either end, there are buttressed wing walls, with further rubble-coped walls to the east and circular-plan terminating piers to the west.