The Mumbai–Ahmedabad Bullet Train Project has completed the launching of all 13 heavy portal beams along its Ahmedabad section following the placement of the final and heaviest beam at Sabarmati.
The portal beams have been constructed to carry the elevated bullet train viaduct over existing operational railway corridors in Ahmedabad.
The 18-kilometre viaduct passes above some of the busiest railway lines in the city, requiring specialised structures that could span the tracks without interfering with regular train movement.
Of the 13 structures, five portal beams have been erected over the Mumbai–Ahmedabad main railway line at Maninagar, seven at Vatva and one over the Ahmedabad–Delhi main railway line at Sabarmati.
The final precast and prestressed concrete portal beam installed at Sabarmati weighs approximately 1,640 metric tonnes.
Measuring 34.5 metres in length, the structure has a cross-section of 5.5 metres by 4.5 metres and is the heaviest among the 13 portal beams launched in Ahmedabad.
The beam was lifted and positioned using a crawler crane with a capacity of 2,200 tonnes.
Despite limited working space near the operational railway corridor, the entire launching exercise was completed in approximately three hours.
The operation was undertaken in coordination with Indian Railways under stringent safety protocols. According to the National High Speed Rail Corporation Limited, regular train operations on the existing railway line continued without interruption during the lifting and placement of the beam.
The portal beams installed at Ahmedabad and Maninagar weigh between approximately 1,322 tonnes and 1,640 tonnes.
The seven comparatively smaller structures erected at Vatva weigh between 555 tonnes and 574 tonnes.
The completion of the 13 portal beam launches clears a significant structural requirement for the elevated bullet train alignment through Ahmedabad.
The Mumbai–Ahmedabad corridor is India’s first high-speed rail project and is being developed across Maharashtra, Gujarat and Dadra and Nagar Haveli.
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