The total length of the second Severn Crossing is just over 5000 metres, with a main span of 456 metres in a main bridge of 947 metres length. The number of approach spans is 45, divided between the Welsh end, 22, and the English end, 23. The bridge was built between 1992 and 1996. This image was shot over a duration of 11 minutes in infra-red from the seaweed covered \’Black Rock\’.

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