BANK STATION UPGRADE | TECHNICAL
CAPACITY UPGRADE: A TUNNEL DESIGNER’S RETROSPECTIVE
BANK STATION
Effective communication between the client and the design and construction teams helped to enable improvements in design and innovation on the
awarding-winning Bank Station Capacity Upgrade (BSCU) project, in London. A tunnel designer’s retrospective is presented by Dr Ali Nasekhian (Design Manager) and Bethan Haig (Tunnel Engineering Manager) of Dr Sauer & Partners
INTRODUCTION The £700 million Bank Station Capacity Upgrade (BSCU) was completed in February 2023, creating 40% more capacity, easier interchange between lines, step-free access to the Northern Line and a new entrance and ticket hall on Cannon Street. The once much maligned station, with convoluted routes joining the Circle and District, Northern, Central, Waterloo & City lines and the Docklands Light Railway (DLR) is now easier to use and popular with its customers. Much has been written about the innovative contractor engagement procurement process (e.g.,
Jensen, 2015) that London Underground (LU) applied before awarding Dragados SA an NEC3 Engineering and Construction Contract Option C to design and build the upgrade, in 2013. In summary, the Dragados team, including Dr Sauer & Partners (DSP), were proposing a scheme that yielded substantial benefit over the base design in several areas and improved the benefit-cost ratio by 45%. But the innovations did not stop after procurement. This article looks to highlight some of the developments during the design and construction stages that followed, and points to where further details can be found.
Arthur Street construction shaft
Docklands Light Railway
To London Bridge
Monument station
Existing Northern Line southbound tunnel converted to passenger area
Central Line Bank station
Moving escalators to Central Line New Northern Line southbound platform
New escalators to Central Line
New entrances on Cannon Street with escalator and lifts to Northern Line and Docklands Light Railway
Left, figure 1:
Bank-Monument Complex, existing and new tunnels IMAGES COURTESY OF DR SAUER & PARTNERS
southbound running tunnel New Northern Line
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