M1 Motorway, Structure 9 Luton-Dunstable Railway Bridge, M1, Caddington, Central Bedfordshire. A Laing labourer laying bricks near a drainage channel during the construction of Structure 9, a bridge carrying the Luton-Dunstable railway line over the London to Yorkshire Motorway (the M1).
The caption beneath the corresponding album print states that this is blue brickwork
Copyright © Historic England Archive. John Laing Photographic Collection
Credit: A© Historic England Archive. Joh