The Dwarka Expressway, the country’s first elevated urban expressway and the first single-pillar flyover with eight lanes, is a significant infrastructure project aimed at alleviating traffic congestion in Delhi. The 9-km-long and 34-m-wide elevated road represents a unique engineering feat – it also includes the country’s longest (3.6 km) and widest (eight-lane) urban road tunnel. This development is expected to enhance connectivity, reduce travel time and improve overall traffic flow in the region. In the expressway project, Package 3 (over 10 km) and Package 4 (over 8 km) were constructed by Larsen & Toubro (L&T). Also to gain an idea of its magnitude, for the total construction, it is estimated to have consumed 200,000 million tonne (mt) of steel (30 times the steel used in the Eiffel Tower) and 2 million cu m of concrete (six times the concrete used in the Burj Khalifa).

The longest bow spring steel bridge

“The bow string steel bridge was constructed at Level 4 interchange and over an eight-lane wide expressway at a height of about 40 m,” says Manish Kumar Agarwal, Operation Head (North) – Roads, Bridges and Formation BU, Transportation Infrastructure IC, L&T. “The bridge has a high strength-to-weight ratio, making it robust with reduced maintenance needs...

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