Causeway arches and embankment walling with gates. 1770 with mid C19 alterations. Designed by John Smeaton. Red brick with ashlar dressings. Walling runs for 80metres along the south-west side of the Great North Road,with buttresses at regular intervals. To the south-east a 30 metre section of wall slightly curved, with ashlar coping. Then a mid C19 gateway, inserted as an entrance to the cattle market, with square brick piers with blue brick and ashlar decoration, and a pair of iron gates. Beyond to the north-west 40 metres of walling with 7 segmental brick arches, streching under the road to the north-east, with buttresses between. The corresponding north wall of this causeway and embankment walling was demolished when the road was widened in the C19. Part of a causeway carrying the Great North Road across the flood plain of the Trent. (EH)