Kolkata's Airport Metro Project Achieves Milestone with India's Longest 'Box-Pushing' Tunnel

Unknown Apr 02, 2026 2 Views

Kolkata is set to witness a groundbreaking achievement as the Airport Metro project initiates the construction of India's longest "box-pushing" tunnel, measuring 135 meters. This innovative tunneling method, which minimizes surface disruption, involves pushing 14 precast concrete bo...

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