Construction will start this month on the main station works at Bond Street Station.
The project will involve the main construction, platform fit-out and Mechanical and Electrical services for the Western Ticket Hall in Davies Street and the Eastern Ticket Hall in Hanover Square.
The deal follows on from the contract already awarded to the JV and announced in March 2011 for the initial construction of the structure of the station.
The latest contract is expected to complete in February 2017 ahead of Crossrail’s opening in 2018.
Andrew Wyllie, Chief Executive of Costain, said: “This contract awarded to Costain by Crossrail is, we believe, further demonstration of the successful implementation of our ‘Choosing Costain’ strategy, in which we focus on building long term relationships with and winning repeat works from blue chip customers who are spending billions on meeting vital infrastructure needs.
“This contract further contributes to the strength of our order book, which comprises approximately 90% repeat business.”
Skanska UK Executive Vice President Bill Hocking said: “We are delighted to have secured another part of the Crossrail programme.
“This is the seventh contract for the joint venture and follows on from the Bond Street advance civil engineering works, which we won in March 2011.
“Being awarded the last of the main construction contracts for the new central section stations is testament to our performance on Crossrail overall, and to the great people we have in place delivering these contracts across the capital.”