Lamb Bridge is part of the Lambton Estate. It is a grade 2 listed structure dating from 1819. Investigations revealed that the bridge was subject to mining related movement and that a scour hole had developed below the arch foundations. To stave off a collapse of the historic structure, we carried out surveys of the bridge profile, co-ordinated ground investigations and carried out an underwater inspection. We then recommended grouting to scour holes and prepared contract documentation. We continue to monitor the bridge and our surveys show that active movement has been stabilised.