aerial photograph of Myton Bridge, the Hull Tidal Surge Barrier and Millenium Bridge at the confluence of the River Hull and the Humber Estuary . Constructed in 1980 this is the second largest flood barrier after the Thames Barrier. It weights over 200 tons and is 30m wide.Myton bridge is a cable stayed box girder steel swing bridge of asymmetric design and carries Garrison Rd over the River Hull as part of the inner city ring road. It was opened in 1980 at a cost of £8 million