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u/Neat_Papaya900

r/IndiaInfrastructure r/highspeedrail r/trains r/TransitIndia r/MAHSR
▲ 12 r/highspeedrail

Mumbai Ahemdabad HSR Package C3 Construction Update

This a pretty detailed video of all most all of the last construction package of India's Mumbai Ahmedabad HSR corridor project. This covers about 135km of the line. Construction on this section started around mid-2023.

For those interested in even more in-depth coverage see this 3 part video linked below. Commentary is in Hindi though. Youtube's auto translated captions are not perfect but usable.

Pt1: https://www.youtube.com/watch?v=wUoArlLQWGM

Pt2: https://www.youtube.com/watch?v=4PBphm37r0s

Pt3: https://www.youtube.com/watch?v=CaHY2a0Pwdo

Its great to see the NHSRCL collaborate with such content creators to give detailed updates.

Do check out this creators other videos on the progress of package C2 which covers the 21km of tunnel near at the Mumbai end of the line and package C1 which covers the Mumbai terminal station.

youtube.com
u/Neat_Papaya900 — 2 months ago
▲ 322 r/highspeedrail+2 crossposts

Chennai - Bangalore and Delhi - Agra : Next Priority Corridors for Indian Elevated High Speed Railways

India's National High Speed Railway Corporation has invited companies to bid for developing standardised design for primarily elevated high speed railway system, with underground stations going into major city centers.

Link for scope of work: https://nhsrcl.in/sites/default/files/tender/2026-06/Scope%20of%20Work.pdf

A few things I gleaned from the doc:

  • Seems like its going to be almost all elevated!! Design requirement for earth structures is the last thing mentioned almost in passing, with lots of requirements for viaduct decks, standard elevated stations, tunnels of various types etc.
  • Underground stations in major cities will likely be common. Chennai station and 2 underground stations in Bangalore are planned, along with one at the new Noida airport.
  • Bangalore - Chennai and Delhi - Agra are called "Priority Corridors", suggesting they are the two likely next lines to be built.
  • The tunnel designs mentioned requirements for both 350kmph and 200kmph design speeds. Potentially there may be thinking of some lines in future to be at this lower speed. A good idea for semi high speed "branch lines".
  • Sticking to a 350kmph design/320kmph operational speed and not going for a 400kmph design/350kmph operational speed like many new high speed lines.
u/Neat_Papaya900 — 4 months ago
▲ 3 r/highspeedrail

Maharashtra elevated section of Mumbai Ahmedabad HSR corridor

Video with details of one elevated section of India's upcoming Mumbai Ahmedabad HSR corridor

youtube.com
u/Neat_Papaya900 — 5 months ago
▲ 194 r/MAHSR+3 crossposts

Japanese HSR tracks on MAHSR (Few pics from the chinese side for comparison)

Pic 1: A worker filling the gap between the stopper and the slab with sealant. This liquid creates a watertight seal and acts as a buffer for thermal expansion, preventing the concrete from cracking.

Pic 2: Japanese J-Slab tracks.

Pic 3: J-Slab precast unit (L&T factory). The circular cutouts lock onto cylindrical stoppers 👉🏼👌🏼 to prevent the track from moving laterally or longitudinally.

Pic 4: Chinese CRTS III track. It features a smooth surface because the stoppers (shear keys) are hidden underneath. Unlike the Japanese design, it uses no liquid sealant and uses different method to tackle thermal expansion.

Pic 5: Chinese CRTS I. An earlier generation of Chinese track that uses the rectangular stoppers shown here.

u/Neat_Papaya900 — 5 months ago
▲ 12 r/highspeedrail

Construction Update - India's MAHSR Corridor - TBMs being assembled finally

April saw a major update with TBM assembly finally getting going for India's Mumbai-Ahmedabad HSR Corridor. These 2 TBMs are likely to get going by July.

youtube.com
u/Neat_Papaya900 — 5 months ago