Transport for London (TfL) in the UK has confirmed that the construction cost for the Silvertown tunnel project has not raised from GBP 1 billion (US$ 1.28 billion) to GBP 1.2 billion (US$ 1.54 billion).

The contract document that became publicly available states that the  "total value of the procurement"  GBP 1.2 billion (US$ 1.54 billion). This has led to rumors that the value was increased. However,  TfL explained that the contract cost of GBP 1.2 billion (US$ 1.54 billion) includes all the expenses for the design, build, finance and maintenance (DBFM) of the project and "the basic construction value is around GBP 1 billion (US$ 1.28 billion) as we have always said."

The design, build, finance and maintenance (DBFM) contract for the project was awarded to the Riverlinx consortium. The Riverlinx consortium consists of Aberdeen Standard Investments, BAM PPP PGGM, Cintra, Macquarie Capital and SK Engineering & Construction (SK E&C). 

The project involves the development of a new river crossing between Silvertown and Greenwich Peninsula in east London. The river crossing will comprise of a twin-bore road tunnel alongside Blackwall Tunnel with connections to the A1020 Silvertown Way/Lower Lea Crossing at the north and to the A102 Blackwall Tunnel Approach at the south.