Then mustafa is right, The Radcot Bridge dates from 1154, the three arch masonry bridge is the oldest remaining bridge across the Thames today although strictly speaking, it is now on a backwater since the construction, in 1787, of a new cut for the Thames and Severn Canal.
Much of the structure was broken down during the famous battle which took place here in 1387, although it was apparently reconstructed six years later. The bridge was again severely damaged during the Wars of the Roses, and was largely rebuilt as we see it today with a flattened centre arch.