Scammonden Dam / M62

Scammonden Dam carries the M62 motorway over Deanhead Valley in the Pennines.
It is the first and so far the only British reservoir embankment to carry a motorway.
The dam lies between junctions 22 and 23 of the M62,
Its unique status as the first motorway over a dam in the world required a Parliamentary Bill.
The M62, including Scammonden Dam, was opened to traffic on December 20th 1970.