Norman Foster and Partners' Jubilee Line Extension station at Canary Wharf is nearing completion. It is the largest station on the jle. The main passenger entrances take the form of large shark-shaped glass domed bubbles, each spanning 20m. The 250m-long station is a cut and cover construction, designed to have minimum visual impact above ground. Twenty escalators and two lifts take passengers down to platform level. The ticket hall, at the first level down, is connected to continuous glass-enclosed galleries on either side of the station containing shops, offices, etc. The civil engineer is Posford Duvivier with input from Ove Arup and Partners, qs is Davis Langdon & Everest and the contractor is a Tarmac-Bachy joint venture.