The central bridge 
We see the R. Gowy flowing northwards from its beginning in a field below the Peckforton Hills, to the R. Mersey.
The other two bridges nearby both had the river passing beneath, but not anymore.
All three were built in the 17th century. All are of sandstone with a causeway connecting them. It is suggested a sandstone bridge existed in the 14th century but a wooden bridge or ‘platt’ was more likely. A platt bridge is a deck of thick(oak) planks set across the river.
Correctly called the Packhorse Bridges, they are unique in Cheshire and, as a group close together, also unique in Britain. Naming them as the Roman Bridges is a popular misconception.