Dartford river crossing (Queen Elizabeth ll bridge) was opened in October 1991
The structure has an overall length of 2.87km and carries four lanes of southbound traffic on the 9km link between the ends of the [M25 London Orbital motorway. Northbound traffic travels through the twin tunnels on the bridge’s west side.
The cable-stayed deck is carried by two pairs of steel and concrete masts 84m tall, which are founded on 53m high concrete piers below it. The deck, designed by German engineer Helmut Homberg, is a composite of structural reinforced concrete over steel, supported longitudinally by steel plate girders. Fifty-six pairs of cables do the supporting work. There is a minimum clearance of 57.5m above high water. I will go back and retake them when the weathers on my side