Work on the Fleet line's stages 2 and 3 did not proceed and it was not until 1992 that an alternative route was approved. The Jubilee line extension took the line south of the River Thames via Waterloo, which was impractical to reach from the line's existing terminus at Charing Cross. New tunnels branching from the original route south of Green Park were to be constructed, and the line to Charing Cross was to be closed. Tunnelling began in May 1994, and improvements were carried out at Green Park to provide a direct passageway connection between the Jubilee and Piccadilly lines, including lifts to the platforms at each end. A new ventilation shaft and an emergency exit to Arlington Street were built. The new extension opened in stages starting at Stratford in the east, with services to Charing Cross ending on 19 November 1999 and the final section between Green Park and Waterloo opening the following day.