Client Costain Laing O’Rourke JV
Skills Engineering Management
Value Est. £150m
The National Rail Station at Farringdon is within the historic Grade 2 listed London Underground Station on one of the earliest lines to be built in the capital. As part of the increase in capacity of Thameslink it is necessary to extend the length of the NR platforms from 8 car to 12 car and to increase the interchange capacity between the NR platforms and the LU platforms.
The upgrade works also contain provision of the ticket hall facilities for the Crossrail Station to be built at Farringdon.
There are two stages to the work at Farringdon. The first is the advanced works forming part of Network Rail’s Key Output zero. At the end of advanced works the closure of the Thameslink Moorgate branch increases the need for interchange between the NR and LU platforms so the principal aim of the advance works is to increase the interchange capacity of the station and increase the emergency evacuation provision to cater for the increased numbers of passengers.
Stage 1: Advance works
- Construction of the first section of the new station entrance and ticket hall.
- Provision of new end-of-platform escape routes.
- Construction of the new Turnmill Street concourse and entrances.
- Establishment of all construction related services required to carry out all works.
Stage 2: Closure of the Moorgate Branch Line and construction of the main works
- Extension of platforms 3 and 4 (Thameslink platforms) in both directions.
- Demolition of required retail properties.
- Construction of the new station roof structures.
- Provision works for the construction of the new Crossrail Ticket Hall facilities.
- Reconstruction of Cowcross Street Bridge and Cowcross Square.
- Provision of lift access to platform level.
LBA provided interim construction management support to the Costain Laing O’Rourke JV by providing an Engineering Manager to work as an integral part of the project management team. In addition to fulfilling the Engineering Manager role LBA provided knowledge and understanding of the process of delivering construction projects in the LU environment.
LBA’s initial involvement in the redevelopment of Farringdon Station continued through the advanced works into the main works and included the establishment of many of the project’s management systems.
The removal of the old footbridge and its replacement with a new footbridge of enhanced capacity was the major engineering highlight of the advanced works. This included the positioning of an 800T mobile crane supported partly on an existing vaulted retaining wall belonging to LU and partly on bespoke trestles. The real highlight was the establishment of an effective engineering team and the establishment of the necessary good working relationships between the providers and receivers of engineering assurance.