This is the bridge over the river Fowey at Lostwithiel. As far as we can tell, there seems to have been a bridge on this spot since prehistoric times. This is the "new" bridge which was built in the 13th centaury to replace the old one which was falling down. After 800 years it is still standing and supporting regular motorised traffic as it is on the main road to the station.
If only modern bridges were built to last this long.