Harefield, UK. 3rd August, 2023. A temporary HS2 pipeline and overhead walkway for HS2 contractors across the Grand Union Canal in Harefield between Harefield Lake 1 and Savay Lake. Pedestrian access to Denham Quarry has been rerouted by HS2 across a temporary road above the Grand Union Canal. Construction of the HS2 High Speed Rail Colne Valley Viaduct (CVV) piers across Savay Lake in Harefield for the new High Speed Railway from London to Birmingham is continuing. According to HS2 the CVV will stretch for more than 3.4km (2 miles) across a series of lakes and waterways between Hillingdon an

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