The Cleddau Bridge in Pembrokeshire, Wales, carries the A477 road over the River Cleddau between Neyland and Pembroke Dock.
Errors in the box girder design caused the collapse during construction in 1970. The bridge became operational during 1975. The bridge is managed by Pembrokeshire County Council.
Wikipedia https://en.wikipedia.org/wiki/Cleddau_Bridge
Address A477, SA72 6, United Kingdom
Coordinates 51°42'23.936" N -4°56'1.338" E