Gallions Reach bridge - total project costs

Meeting: 
MQT on 2015-01-21
Session date: 
January 21, 2015
Reference: 
2015/0062
Question By: 
Darren Johnson
Organisation: 
City Hall Greens
Asked Of: 
The Mayor
Category: 

Question

Please list all of the different "total project cost" amounts that TfL has ascribed to the Gallions Reach bridge during its various consultations on river crossings. Please give reasons for any increases in project cost between each consultation.

Answer

Answer for Gallions Reach bridge - total project costs

Answer for Gallions Reach bridge - total project costs

Answered By: 
The Mayor

The River Crossing consultation, which ran from October 2012 to February 2013, estimated the project cost for Gallions Reach bridge to be similar to Silvertown Tunnel.  At the time, the Silvertown Tunnel was estimated to cost in the region of £600 million.

Further work was undertaken to assess the cost of a fixed link option at Gallions, which led to a cost range of £400 million to £550 million. The cost was expressed as a range, rather than an absolute figure to reflect the uncertainties in estimating major infrastructure projects at a relatively early stage of development and the number of different design solutions for the crossing. This cost range was published in TfL's response to the River Crossing consultation in September 2013.

The more recent East of Silvertown consultation, which ran from July to September 2014, revised the estimated cost of the scheme to between £350 million and

£650 million. This updated range reflected more detailed design work including an assessment of different alignments and types of structure.

The scheme cost includes the estimated costs of construction and permanent land purchases together with an allowance for risk and inflation. It excludes the costs of any complementary measures and land required temporarily for construction.

The next stage of work includes a more detailed assessment of different design solutions that reflects comments raised during the consultation which will enable a preferred option to be identified.  This will include a revised cost estimate.