Concrete--ugly but functionally efficient.

Retford is named after a river crossing by ford over the river Idle .
This modern day crossing has to carry an estimated 250 tonnes of stationary or moving traffic which raises the memory of a 10 ton steam engine crossing a 3 ton capacity canal bridge 100 years ago in this area with the inevitable drop straight through into the water. Incredibly the driver and co driver survived, as did the man in the trailer who was in the course of making tea at the time.