The iron stump next to the bridge is the kingpost of a hand worked crane. The crane used to put in stop planks that were used to keep water back in the case of emergency. You can see the slots in the coping at the edge of the canal if you look carefully. On the north bank of the canal, close to the bridge was the extremely large Highfield tannery. It was the largest in the town and the last to close in 1968.