Ahmedabad Metro’s Cantilever Bridge Takes Shape at Thaltej
In west Ahmedabad, a new 165 meter long balanced cantilever (CLC) bridge is slowly taking shape, one segment cast in-situ at a time, over the Sarkhej-Gandhinagar (SG) Highway for Ahmedabad Metro’s 20.737 km Line-1.
This 3-span bridge adjacent to Thaltej Station will be about 18 meters high and have a configuration of 45 m + 75 m (central span) + 45 m while connecting piers SP60 (towards Thaltej Station) – SP61 – SP62 – SP63 (towards Doordarshan Kendra Station).
Construction for it is being carried out by Tata Projects Ltd – China Civil Engineering Construction Corporation (TPL-CCECC) JV as part of the 39.259 km Phase 1 project‘s Reach-2 which was awarded in January 2017 with a value of Rs. 721 crore.
![](https://themetrorailguy.com/wp-content/uploads/2020/10/AhmedabadMetroReach2MapN.png)
![](https://themetrorailguy.com/wp-content/uploads/2020/12/AhmedabadCantilever6.jpg)
![](https://themetrorailguy.com/wp-content/uploads/2020/12/ThaltejMetro1.jpg)
The bridge was designed to be constructed in 26 carefully defined stages, but the sequencing of those stages are not being followed. So far, workers have cast two massive hammer-head pier caps on SP61 and SP62, cast 2 segments ‘S1’ on either side of SP61, and cast 1 segment on the Thaltej side of SP62.
![](https://themetrorailguy.com/wp-content/uploads/2020/12/AhmedabaDCantileverFinalStage.png)
![](https://themetrorailguy.com/wp-content/uploads/2020/12/AhmedabadCantilever1.jpg)
The form traveler being used (seen in red) was designed and fabricated by Bridgecon India.
![](https://themetrorailguy.com/wp-content/uploads/2020/12/AhmedabadCantilever3.jpg)
![](https://themetrorailguy.com/wp-content/uploads/2020/12/AhmedabadCantilever2.jpg)
The progress right now stands at 25.60 meters. This includes 8m x 2 hammer head pier caps and 3.2m x 3 segments.
I’ll likely write another post about this bridge’s progress in the next 6-9 months when things are closer to completion. In case you missed it – further west of this intersection, just 10 days ago, DRA Infracon emerged as the lowest bidder for the approx. 900 meter Thaltej – Thaltej section.
Similar cantilever bridges exist over railways lines and roads in Delhi, Chennai, Hyderabad, Lucknow and Kochi. There’s a longer one under construction in Nagpur right now for its Aqua Line.
For more updates, check out the Ahmedabad section of The Metro Rail Guy!
– TMRG
Leave a Reply
Want to join the discussion?Feel free to contribute!