Bideford Long Bridge..........

 in North Devon spans the River Torridge near its estuary and connects the old part of the town, and formerly important river port, of Bideford on the left bank (west side) with East-the-Water on the right bank (east side). It is one of the longest medieval bridges in England, being 677 feet (222 yards) long with 24 arches. In 1790 the bridge was the longest in Devon It remained the furthest downstream bridge on the river until 1987, when the Torridge A39 Road Bridge was built a mile or so further downstream at Northam The river is still tidal at Bideford (and as far upstream as Weare Giffard) and a very large fluctuation in water levels occurs twice daily under the bridge. An ancient New Year's Eve tradition was to try to run across the Long Bridge during the time taken for the bells of St. Mary's parish church, near the west end, to chime midnight. A sight enjoyed by many in the winter months is of the starlings at dusk, as they come in large flocks to roost underneath the bridge.
It is a Grade I listed building. A large scale model of the Long Bridge in all its stages from 1280 to 1925 is displayed at the Burton at Bideford museum in the town 
This info from Wikipedia.