Crofton Park commuters will face disruption to their journeys from November until January 2011, as Blackfriars Station will close to allow Thameslink construction work to take place.
BBC News reports that:
The completion of the upper station concourse paves the way for the track "switch" at Christmas.
This will involve work on the the tracks moving from the western side of the bridge to the eastern side - creating the final track alignment for the redeveloped station.
Trains will continue to run through the station for the majority of the closure - from 20 November until 17 January - and passengers will be able to use the nearby City Thameslink station.
A campaign is also under way to rename the station Blackfriars and Bankside, to reflect the fact that when it reopens, it will straddle the river, with entrances on both the north and south banks.