The intermodal project began in June 2025 and is scheduled for completion on 31 July 2026.
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Cross passage construction complete on HS2’s Northolt Tunnel in London
The team building the Northolt Tunnel for HS2 have reached a new milestone, completing the construction of 34 cross passages. Cross passages connect the northbound and southbound tunnel and are a safety feature which allows passengers to cross to the adjacent tunnel in the event of an emergency. The Northolt Tunnel is 8.4 miles long, […]