. . "Thornborough Bridge"@en . . "A421road (pre-1974)" . "3"^^ . "Pedestrians (from 1974)" . "0014Z"^^ . . "4.0"^^ . "30.0"^^ . . "Thornborough Bridge is located on the main Bletchley and Buckingham road, now bypassed by a modern bridge in 1974 for the A421. The bridge is accessible to walkers from an adjacent lay-by.The bridge straddles the parish boundaries of Thornborough and Buckingham (the parish boundary follows the line of Padbury Brook or The Twins, a tributary of the River Great Ouse), and dates from the 14th century and is the only surviving mediaeval bridge in Buckinghamshire."@en . . "6"^^ .