 As from 1 February 1976 the original down platform was taken out of use and services travelling west used the south side of the island platform.The original station building at Chippenham was built to Isambard Kingdom Brunel's design and opened in 1841.With the subsequent opening of new lines to and , the station was not adequate to meet the increased demand and was redesigned by J H Bertram in 1856 to 1858; it is a Grade II listed building, constructed in Bath Stone ashlar with a bay window at one end and a wing at the other making a long, low composition.