Four more pillars will construct the first river bridge along the Mumbai-Ahmedabad bullet train route.
The 320-meter-long bridge being built in Valsad will cross the Par River. Officials from National High-Speed Railway Corridor Limited (NHSRCL) claim that the bridge will be made up of 8 full-span girders that are 40 metres long. The Narmada, Tapti, Mahi, and Sabarmati rivers all have bridges under construction at the same time.
In contrast, bids for 21 KM sub terrains tunnels that include a section that crosses Thane Creek are scheduled to open in early February.
It has been suggested to build a tunnel between Shilphata and Bandra Kurla Complex (BKC). Included in this is a 7 km long underwater tunnel that crosses Thane Creek. “We issued a tender invitation on September 23, 2022, and it is anticipated that it will be launched on February 9. In order to build a terminal at BKC in Dec 2022, we have already solicited financial bids, an official stated.
This is going to be the nation’s first undersea tunnel. A corridor boring machine (TBM) & the New Austrian Tunnelling Technique will be used to construct the tunnel (NATM).
To allow dual track for both up & down trains, a one-tube tunnel will be used. The tunnel will be between 25 and 65 metres deep, with the bottom point being 114 m under Parsik hill near Shilphata, according to sources.
For the project, specialised TBMs with 13.1 meter-wide cutter heads will be deployed. Due to the terrain’s slope, NATM will be employed between Ghansoli and Shilphata. The tendering procedure is ongoing and is anticipated to be launched on March 15, so other civil constructions are also making some progress. These projects include the building of station 3 at Thane, Virar, and Boisar as well as a viaduct, bridges, tunnels, and maintenance depot.
Additionally, the land acquisition procedure, which for a long time was a significant problem in Maharashtra, appears to be moving forward as well. While the total amount of land purchased for the 508-kilometre line is 98.87%, the train authorities have purchased 98.76% of land in Maharashtra & 98.91% in Gujarat.
A high-level Japanese crew toured Surat station, casting yards, and other building sites on January 23–24 under the leadership of Masafumi Mori, special counsellor to the Japanese prime minister, top officials, and NHSRCL managing director Rajendra Prasad. In Gujarat, work is progressing more quickly thanks to 100% of the contracts issued for the 352-km route that passes through eight Gujarati districts as well as Dadra and Nagar Haveli.
At the high-speed rail stations in Surat and Anand, the first railway-level slabs measuring 50 m each have been erected. Another train official stated, “We have also finished construction of a 27.6 km long viaduct, which contains 6.28 km of contiguous viaduct close to Vadodara and the remaining at various locations.
Eight HSR stations between Vapi and Sabarmati are also in varying phases of development. Over a span of 240.37 km, a stack has been cast, over a distance of 137.89 km, piers have been constructed, and over a distance of 47 km, 1,175 girders have been installed.
