One of Britain's best known road structures was opened on 24 May, 1972.
One of Britain's best known road structures was opened on 24 May, 1972. Here are highlights from a 30-minute Government film on the construction of Gravelly Hill Interchange.
One of Britain's best known road structures was opened on 24 May, 1972. Here are highlights from a 30-minute Government film on the construction of Gravelly Hill Interchange.