town (“parish”), Caradon district, administrative and historic county of Cornwall, England. It lies near the English Channel coast, on the west shore of the Tamar estuary, on the opposite side of which lies Plymouth. Saltash is connected to Plymouth by the Royal Albert Bridge (completed 1859), which was the last railway bridge designed by the British engineer Isambard Kingdom Brunel before his death. The bridge spans the estuary in a series of 19 arches and is 2,240 feet (683 metres) long. Saltash was Cornwall's oldest borough and was listed in Domesday Book (1086). Pop. (2001) 14,964.