Construction firms AMEC and Balfour Beatty, together with American building company Jacobs Engineering Group, have formed an alliance to bid for London Olympic and Paralympic Games contracts.

The contract will be awarded this summer, with the successful partner taking responsibility for the management of the design and delivery of the Olympics, including infrastructure, the logistics for competitors and spectators and the subsequent conversion of the facilities to create a lasting legacy for London and the UK.

The partners say G3 (Great Games Grouping) alliance will bring together the full range and depth of experience, expertise and resources from the UK and US necessary to deliver the games.

"The Olympic Delivery Authority will choose the delivery partner that commits the best people to the task for the duration of the job," said Sir Peter Mason, chief executive of AMEC.

"Only G3 has the resources in the UK and the expertise gained around the world to make this happen.

"This is a role of national importance and deserves the best to achieve its goals," he added.

Balfour Beatty's chief executive, Ian Tyler, also said the G3 alliance would bring together the best programme management skills and an exceptional record of achievement in delivering the most complex projects.

"This, backed by the partners' financial strength, creates the best team to fulfil this demanding role," he said in a statement.

Balfour Beatty, which is involved in a number of projects in the West Midlands, was part of the design team for the 85,000-seat Olympic Stad ium in Atlanta, while through its participation in the Metronet consortium, it is currently involved in the upgrade for a major part of the London underground network.

AMEC has also delivered many large and complex projects including the extension of the Docklands Light Railway and managing the final fit-out of Terminal 5 for BAA.

AMEC and Balfour Beatty have also worked together on the Jubilee Line extension and the Limehouse Link Road, which connects the City to London's Docklands.

American partner Jacobs has managed Olympic delivery programmes in Atlanta and Athens as well as expertise in transport infrastructure, including the redevelopment of Stratford Station.

The G3 bid team is being led by Rod Hoare. He led Metro-net's bid for the London Underground contract in 2003 and was behind the creation of the Heathrow Express.