Major Highways, Bridges, Tunnels & Infrastructure
India's modern engineering projects encompass record-breaking bridges, high-altitude mountain tunnels, and access-controlled expressways that transform regional connectivity. Notable transport milestones include the Atal Tunnel at Rohtang (9.02 km), which is one of the world's longest single-tube highway tunnels above 10,000 feet, and the Zojila Tunnel under construction in Ladakh. In bridge engineering, the Dhola-Sadiya Bridge (Bhupen Hazarika Setu, 9.15 km) over the Lohit River in Assam is India's longest water bridge, while the Chenab Rail Bridge in Jammu and Kashmir is the world's highest railway arch bridge, standing 359 meters above the riverbed. Major expressways like the Mumbai-Nagpur Samruddhi Mahamarg and Delhi-Mumbai Expressway lead modern highway development.
Key Concepts & Examination Highlights
- The Bhupen Hazarika Setu (Dhola-Sadiya Bridge) across the Lohit River in Assam spans 9.15 km, making it India's longest river bridge.
- The Chenab Arch Bridge in Reasi district of Jammu and Kashmir is the world's highest railway bridge at 359 meters above the riverbed.
- The Atal Tunnel under the Rohtang Pass on the Leh-Manali Highway spans 9.02 km at an altitude of over 3,000 meters (10,000 feet).
- The Atal Setu (Mumbai Trans Harbour Link) spanning 21.8 km is India's longest sea bridge, inaugurated in January 2024.