Row growing after third historic rail bridge filled in with concrete

National Highways faces third intervention by a local authority over infilling, after burying Congham bridge in Norfolk in tonnes of concrete

A controversial practice by the government's roads agency of burying historic railway bridges in concrete has been dealt a fresh blow after a third council intervened over another infilled structure.

King's Lynn and West Norfolk council has told National Highways it must apply for retrospective planning permission if it wants to retain hundreds of tonnes of aggregate and concrete it used to submerge Congham bridge, a few miles east of King's Lynn.