The council is seeking to appoint a prinicipal contractor for the bridge and associated work. It has estimated the capital value of the contract to be between US$129m and US$177m.
The design was finally revealed in 2008, three years after it was chosen, with the project receiving planning permission last year. The winning concept is by by architect Spence Associates and structural engineer Techniker. At the time of the announcement, the council declined to release any details of the winning concept, saying that it was being kept under wraps until the 'structurally challenging, complex scheme' had been 'resolved'. The structure has two asymmetrical, curved 'bull horns' which are intended to act as towers supporting the cable-stayed deck. They are 140m and 190m tall.
The tender details have been published in the Official Journal of the European Union.