Bullet Train Project Construction Integrates with Railway Network at Vadodara
The Mumbai–Ahmedabad Bullet Train project has achieved a major construction milestone in Vadodara, Gujarat, with the completion of all 14 portal beams over the busy Delhi–Mumbai Rajdhani railway line. The development marks an important step towards constructing the elevated high-speed rail corridor while accommodating existing railway operations.
According to the National High Speed Rail Corporation Limited (NHSRCL), completing these structures clears a key requirement for the next stage of construction, which involves installing large composite girders over the operational railway corridor.
Bullet Train Project Advances in Vadodara
The Vadodara section presents significant engineering challenges because the proposed bullet train alignment passes through a densely developed urban area and intersects multiple existing railway lines, Bullet Train Project Construction Integrates with Railway Network at Vadodara
The approximately 8.3-kilometre stretch crosses five Indian Railways lines, including two main lines. The alignment also crosses the Delhi–Mumbai Rajdhani route diagonally, requiring specialised structural designs and careful coordination to maintain railway safety.
Of the 14 portal beams, 10 are located between Vadodara Bullet Train station and Vishwamitri railway station towards Surat, while the remaining four are positioned between Vadodara railway station and Chhayapuri railway station towards Ahmedabad.
Heavy Portal Beams Enable the Next Construction Phase
The portal beams will provide the structural support required for building the elevated bullet train viaduct across the existing railway infrastructure.
Each beam measures approximately 37 metres in length, with a height and width of around four metres. A completed beam weighs approximately 1,500 tonnes and requires nearly 590 cubic metres of concrete. Its reinforcement cage alone weighs about 55 tonnes.
Due to the weight of these structures and the limited working space around operational railway tracks, engineers used the cast-in-situ construction method, pouring and curing concrete directly at the site.
The next stage involves launching composite girders spanning approximately 40 metres across the Rajdhani railway line. Span-by-Span (SBS) construction will be used at the other portal beam locations.
Coordinating Construction with Existing Railway Operations
Building an elevated high-speed rail corridor over active railway lines requires precise planning, specialised equipment and close coordination with Indian Railways.
Construction activities involve heavy-duty cranes, hydraulic jacks, long-reach concrete pumps and precision surveying equipment. Controlled railway blocks and continuous monitoring are also required wherever construction activities affect the operational railway infrastructure.
The completion of all 14 portal beams represents progress in addressing one of the technically complex sections of the Mumbai–Ahmedabad High-Speed Rail project.
What This Means for Mumbai–Ahmedabad Bullet Train Connectivity Bullet Train Project Construction Integrates with Railway Network at Vadodara
The Mumbai–Ahmedabad Bullet Train project is designed to introduce high-speed rail connectivity between Maharashtra and Gujarat. Progress in Vadodara is important because it enables further work on the elevated corridor through a section with extensive existing railway infrastructure.
Once operational, the high-speed rail service is expected to improve intercity connectivity and offer travellers a faster alternative for journeys between Mumbai and Ahmedabad. However, completion of the portal beams is a construction milestone and does not, by itself, indicate that the entire project is ready for passenger services.
For Mumbai and the wider metropolitan region, the project remains an important infrastructure development to watch as work continues across the corridor.
Author: Ajjay Bhagyakar
Published by: Griha Realty
Source: The Hindu
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