Govia Thameslink Railway is adding an additional line between the north and south parts of the train depot at Cambridge Station. The £30 million expansion of the railway depot requires modification of one arch of the bridge to allow an additional rail track to run underneath. The upgrade is part of the £7billion Thameslink Programme and will allow more services from Cambridge to destinations such as Brighton and Gatwick Airport.
Pedestrians and cyclists will still be able to cross Mill Road using a temporary footbridge, other than for a period of around five days when the route will need to be closed for safety reasons. There may also be other ad hoc closures for short periods to align with the sequencing of the work but any closures will be advertised on the information boards on Mill Road Bridge.