(source : ANI) ( Photo Credit : ani)
The Mumbai‑Ahmedabad high‑speed rail project just raised its 10th steel bridge in Ahmedabad, Gujarat. The 60‑meter span was launched over a western‑railway laundry site beside the tracks in a single, precise seven‑hour operation. This is the first steel bridge finished in Ahmedabad district as part of the new bullet‑train line.
Engineers built the bridge on temporary trestles 16.5 m above ground. Two 200‑ton semi‑automatic jacks, each guided by locking trolleys, slid the 485‑ton structure into place. The bridge—12 m tall and 11.4 m wide—was made in a downtown Wardha workshop and shipped to Ahmedabad on custom trailers. It is held together by over 20,000 high‑strength bolts, protected with a C5 paint system, and fitted with elastomeric bearings for vibration control.
A 35 × 60‑metre platform supported the main assembly, while extra brackets strengthened the track beam during the transverse move. Four of 14 skid arrangements were used for the launch, the rest aiding support. After the bridge, the viaduct will cross 31 points—including rail tracks, flyovers, a canal, the Sabarmati River and six other steel bridges. The full corridor plans 28 steel bridges, 17 in Gujarat and 11 in Maharashtra.
Earlier this month, Railway Minister Ashwini Vaishnaw visited the tunnel works and praised the crew for a breakthrough using the New Austrian Tunnelling Method (NATM). He also highlighted the undersea tunnel being dug beneath Thane Creek, part of the Mumbai‑Thane link. According to Vaishnaw, the city‑to‑city travel time will shrink from two hours to just seven minutes. The plan is to run trains every half‑hour during peak times, eventually aiming for a ten‑minute headway.
With the undersea tunnel milestone marked—5 km of NATM work and a 4.881‑km stretch that includes a 7‑km section under the creek—engineers celebrated a 2.7‑km breakthrough on July 9, connecting the ADIT to the Savali shaft. The Mumbai‑Ahmedabad bullet train is set to transform travel, boost local economies along the route, and usher in a new era of instant mobility for commuters.
Source: aninews
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