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Bridging the Future: The 100-Meter ‘Make in India’ Marvel Scaling Ahmedabad
Imagine an enormous steel behemoth hung high above Ahmedabad’s busy streets, weighing more than a thousand metric tons. This is the most recent highlight of the Mumbai–Ahmedabad Bullet Train project, not a scene from a science fiction movie. India demonstrated a masterclass in indigenous engineering on January 29, 2026, rather than merely finishing a bridge.
For the National High Speed Rail Corporation Limited (NHSRCL), the construction of this 100-meter steel bridge represents a significant milestone. This structure, which was constructed as part of the “Make in India” project, is more than just a link; it is evidence of the nation’s increasing capacity to address challenging infrastructure issues using domestic knowledge.
Table of Contents
A High-Stakes Engineering Balancing Act
What you cannot see is what makes this bridge truly magical. The subterranean metro tube that connects the stations of Shahpur and Kalupur is beneath the surface where this bridge is located. It is an essential part of the city.
Concrete spans of 30 to 50 meters are typically used in Bullet Train viaduct construction. But engineers were unwilling to accept the chance of putting large foundations close to an operational metro tube. The crew had to physically think large in order to save the metro system. To keep the foundations at a safe distance from the tunnel, they completely rebuilt the section and increased the span to an enormous 100 meters.
From Concrete to Steel Truss
It was strategically necessary to change the design. Engineers were able to preserve structural integrity for both the metro system below and the high-speed rail line above by switching from the conventional SBS (Span-by-Span) viaduct to a Steel Truss Bridge layout. Not a single gram of load is carried to the subterranean metro tunnel thanks to this 100-meter span.
The Technical Specs: A 1,098-Metric Ton Giant
When we discuss “Make in India,” we are referring to accuracy. Before being shipped to Ahmedabad on enormous trailers, this bridge was built hundreds of kilometers away in a specialized facility in Wardha, Maharashtra.
| Feature | Specification |
| Length | 100 Meters |
| Weight | 1,098 Metric Tons |
| Height | 14 Meters |
| Width | 15.5 Meters |
| Bolts Used | 45,186 High-Strength (TTHS) Bolts |
This bridge has been covered with a high-performance C5 system protective painting to make sure it endures the test of time and coastal humidity. Additionally, it is supported by elastomeric bearings, which are made to withstand the severe vibrations and heat expansions associated with high-speed rail travel.
The “Sky-High” Assembly Process
It was not an easy task to put this 100-meter puzzle together. The assembly took conducted at a height of 16.5 meters above the earth. To make the process easier, engineers built a temporary platform that was 11.5 by 100 meters.
Precision Lowering
The real tension started after the assembly was complete. The complete 1,098-metric-ton structure was surgically lowered onto its permanent supports after the temporary supports (trestles) were painstakingly disassembled. This guaranteed that the bridge was in perfect alignment with the remainder of the 508 km corridor, which ran along to Western Railways’ main line from Ahmedabad to Sabarmati.
A Milestone in the Gujarat Corridor
This completion marks the 13th steel bridge out of the 17 planned for the Gujarat section of the project. There is no denying the momentum, as the entire Mumbai–Ahmedabad corridor requires 28 steel bridges.
With hundreds of kilometers of viaducts and pier foundations already standing tall, the project is proceeding at a breakneck speed. This particular 100-meter bridge is a prime illustration of how high-speed rail is being incorporated into India’s current metropolitan environments without interfering with the daily activities that take place beneath it.
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