NHSRCL unveils steel bridge on Delhi-Mumbai national expressway for the Bullet Train project

A major milestone in the ambitious Bullet Train project has been achieved by the NHSRCL for the Mumbai-Ahemdabad corridor by successfully launching a 130-metre-long steel bridge. This ‘Make in India ‘ bridge, spanning the Delhi-Mumbai National Expressway near Vadodara in Gujarat, represents a key advancement in the construction of India’s first high-speed rail corridor.

This 3000 MT of steel bridge of 18m in height and 14.9m in width has been fabricated at the workshop in Wardha, Maharashtra and was transported on trailers to the site for installation.

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It requires tremendous efforts to pull such a heavy girder which is likely to be the longest over any national highway in the country. The bridge fabrication utilized approximately 124,246 Nos. of Tor-Shear Type High Strength (TTHS) bolts with C5 system painting and metallic spherical bearings, all designed for a 100-year lifespan.

The steel bridge was assembled at the site at a height of 15m from the ground on temporary trestles and was pulled with an automatic mechanism of 2 semi-automatic jacks, each of capacity of 250 tons using mac-alloy bars.

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The NHSRCL successfully launched another steel bridge of 130 m length on 23rd June 2024. The steel bridge was launched over the Delhi-Mumbai National Expressway near Vadodara in Gujarat for the Mumbai-Ahmedabad Bullet Train project. The bridge launching was completed within 24 hours with intermittent breaks to allow road traffic to pass. This achievement marks a significant advancement in the high-speed rail project.

The project is being executed meticulously, maintaining the utmost standards of safety and engineering excellence. Leveraging Japanese expertise, India is increasingly utilizing its own technical and material resources to build infrastructure under the “Make in India” initiative. The steel bridge for the Bullet Train Project is a major example of this effort.

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