Transport for London (TfL) has invited expressions of interest from contractors to carry out an up to £500M upgrade of Bank Tube station.
The Bank station capacity upgrade project will create a new ticket hall at surface level and includes the diversion of around 570m of the southbound Northern line running tunnel in the Bank area and the formation of a new southbound platform to the south-west of the existing platforms.
Work is expected to start in June 2013 and complete by the end of 2021.
TfL said it was going to market early to allow contractors to bring their skills and experience to bear on the project, and identify significant cost, risk, programme, and other benefits. It wants expressions of interest from contractors or consortiums able to take on the complete design, build and project management of the works, estimated to be worth between £250M and £500M.
The project at a glance
London Underground has developed the Bank station capacity upgrade project to an outline design stage to provide:
- An increase in the circulation area for the Northern Line platforms by constructing a 570m new section of the southbound Northern Line and transforming the existing southbound platform and some of the running tunnel area into a new concourse and passage area
- New large cross passages linking the newly formed concourse to the new southbound platform
- New passageways, stairways and escalators to link the northern line to other lines
- A new lift shaft with four high capacity lifts providing direct step-free access from NL platforms and concourse to a new ticket hall and street
- An improved secondary means of escape
- Necessary utility diversion and enabling works
It said London Underground was looking in particular to pre-qualify firms best able to take on its outline design and bring innovative ideas forward.
The scope of innovation sought by TfL includes but is not limited to:
- Arrangement of underground works
- Construction site arrangement including land take, secondary sites
- Constructability, sequencing, logistics, traffic management
- Methodology and construction techniques
- Oversite development
- Optimum incentivisation for payment during the design and construction periods