Archaeologists and construction contractors have had a difficult and occasionally fractious relationship. Archaeologists need time to study and record historical artefacts uncovered by the excavations for a major project but contractors know that any delay to their programme can be expensive. During its construction, the £3.5 billion Jubilee Line Extension Project was the largest civil engineering project in Europe and passed through some of the most archaeologically sensitive areas of London. The tunnels for the Jubilee line are so deep that they pass well below any archaeological remains but the new ticket halls, the sinking of escalator shafts, ventilation shafts, grouting shafts and escape shafts, the diversion of countless services, the construction of new buildings and the underpinning of existing ones all have the potential to uncover important fragments of the past history of London. London Underground commissioned archaeological investigations wherever ground works were due to take place along the route. Pictured is an archaeological investigation beneath the road deck at London Bridge, adjacent to the Jubilee excavations, where important Roman remains were discovered, including a high street with shopfronts. The Jubilee Line covers 36.2km (22.5 miles) and serves 27 stations between Stanmore and Stratford. The equivalent statistic for the new extended section is 16km (10 miles) of which 12.4 km (7.7 miles) is in tunnel and 3.5 km (2.3 miles) on the surface. Work started on the £3.5 billion project to extend the Jubilee line in December 1993. The extension runs from Green Park to Stratford and was opened in three phases during 1999.
Ort: London, UK.
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