A second tunnel boring machine (TBM) has completed a 5-mile excavation of Northolt Tunnel for HS2.
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Christmas progress for key HS2 viaducts
- Guest authors
- January 2, 2026
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The construction of one of the most complicated parts of the HS2 project took a step forward over the Christmas break, with the completion of two key viaduct spans over the existing railway near Water Orton in Warwickshire. The spans form a small part of the Delta junction – a huge triangular intersection being built […]