A Bechtel consortium worked to upgrade the Jubilee, Northern, and Piccadilly lines of the tube, London's historic underground subway system, which was the first in the world and built over 150 years ago. The three lines accounted for nearly 40 percent of the Underground's total length. The Bechtel consortium worked in partnership with London Underground to design and build infrastructure including trains, signaling, tracks, bridges, drainage, escalators, and lifts.
The modernization of the Jubilee, Northern, and Piccadilly lines included installing a new signaling system and updating or upgrading:
- 251 trains
- 100 stations
- 187 miles (about 300 kilometers) of track
- 2,395 bridges and other structures, 227 escalators
- 71 lifts
- A new signaling system made perhaps the most dramatic difference—providing a better, safer service and a higher level of reliability.