This is the really difficult part of Sustrans. If it were not for the concrete walls and floor, the area under the bridge would be flooded and more or less unusable most winters, very much like the Cattle Creep.
In January 2012 the system broke down and the underpass became flooded.

  A different part of Sustrans Coppermill Lane bikes   
Sustrans covered in snow.

Lea Marshes