Network Rail and Govia Thameslink plan a complete closure of the bridge over the railway on Mill Road Cambridge for two months from May 2019.
Mill Road TV made a video of them presenting their plans https://www.youtube.com/watch?v=4SBXVOPSELg&t=150s. However, the organisers prevented recording of the Q and A, which flies in the face of the their claim that they wanted to be transparent.
Network Rail and Govia Thameslink have submitted an application that will go through the planning approval process at Cambridge City Council:
“18/1372/CAP18 | Application for Prior Approval under Part 18 for construction of new gated east side stairway from Mill Road to provide access to train drivers walkway, including alterations to arches 5 and 6 to facilitate new sidings, walkway and passive provision for Chisholm Trail. | Mill Road Bridge Mill Road Cambridge Cambridgeshire”
You can see the details via https://idox.cambridge.gov.uk/online-applications/ – search for “18/1372/CAP18”.
It is unlikely that the City Council planning approval process will have any say about the bridge being shut – this is thought to be a matter for the County Council. This is explained in a letter from ‘The application officer’ linked here:
Romsey City Councillor Dave Baigent has called the application into full planning committee and this will ensure transparency.
The Mill Road Bridges community organisation have raised an objection to the plans. View this at http://mill-road.com/closure-of-mill-road-bridge-for-railway-works/.