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Engineering Hubs in Rural Maharashtra
Sakare village, located 118 km from Mumbai, has become a vital center for the Mumbai-Ahmedabad High Speed Rail corridor. This casting yard, spanning 50 acres, uses advanced machinery operating around the clock to create the enormous girders needed for the project's elevated sections. Large machines, including a 380-tonne straddle carrier, carefully handle and place 1,000-tonne, 40-meter girders. This facility is responsible for girders covering 22 kilometers of the route, with 527 girders planned and 58 already installed. Nationwide, the National High Speed Rail Corporation Ltd (NHSRCL) plans to install about 11,500 girders for the 465 km viaduct, with 8,500 already in place. Officials note that construction is proceeding seven to eight times faster than in Japan, which is essential for speeding up the Mumbai section that faced land acquisition delays.
Project Schedule and Rising Costs
The first section, from Surat to Bilimora in Gujarat, is scheduled for completion by August 15, 2027. The entire 508 km project is expected to be fully operational by December 2029. Gujarat's section is about 68% complete, while Maharashtra's progress reached 41% by March 2026. The project's financial estimates have significantly changed, with costs increasing to nearly ₹1.98 lakh crore from an initial ₹1.08 lakh crore. This cost increase of almost 83% is largely due to extended land acquisition delays. The Indian government is expected to cover the additional cost, estimated at approximately ₹90,000 crore, as further funding from the Japan International Cooperation Agency (JICA) is not planned. JICA is currently providing about 81% of the project's cost through a concessionary loan.
Advanced Girder Casting Techniques
The casting of each 1,000-tonne girder is a significant engineering achievement. These girders are designed with a rectangular opening to reduce stress on the supporting piers and are made with 50 MPa concrete to support high-speed trains. The casting process requires approximately 65 concrete mixer trucks delivering 400 cubic meters of concrete, with high-tensile wires embedded for strength. Around 1,000 employees work in coordinated shifts day and night. Engineers compare this work to complex projects like the Mumbai Trans Harbour Link. After casting, a chemical compound is applied for curing, and large 350-tonne bridge gantries move and position the girders. Load testing is conducted during girder launching to ensure a capacity of nearly 1,400 tonnes, far exceeding future needs. The project also utilizes the J-Slab ballastless track system, a first for India, adapted from Japan's Shinkansen technology for better stability.
Cost Concerns and Future Plans
Despite the rapid construction and advanced technology, the Mumbai-Ahmedabad High-Speed Rail corridor faces scrutiny over its rising costs and financial outlook. The major cost overrun, now approaching ₹2 lakh crore, raises questions about the project's long-term economic value, especially considering the needs of India's current railway system. Projected fares, possibly between ₹3,000 and ₹5,000 for the full trip, might be too high for many people who rely on more affordable public transport, primarily targeting business travelers. While the project aims to boost economic growth and improve travel, the financial burden of the cost overruns, mostly borne by the Indian government, is substantial. India is also considering European firms for train and signaling contracts to potentially lower costs, seeking alternatives to Japan's pricing. The full operation is targeted for December 2029, with a partial launch expected by August 2027.