Mumbai-Ahmedabad Bullet Train Project (MAHSR)progressed with the launching of the 7th Open Web Girder (OWG) bridge spanning 70 m over the two Dedicated Freight Corridor tracks near Vadodara, Gujarat.
This is the seventh steel bridge out of the planned 28 steel bridges planned for the Mumbai-Ahmedabad Bullet Train corridor.
About the 7th OWG Bridge
The launching operation was completed within a 12-hour timeframe, employing intermittent blocks on the DFCC tracks.
The steel bridge weighs 674 metric tons, measures 13 meters in height and 14 meters in width.
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The Bridge was fabricated at a workshop in Durgapur, Kolkata, and subsequently transported to the installation site using trailers.
The bridge was launched utilising a 49-meter-long launching nose, which has a weight of approximately 204 metric tons.
The fabrication of the bridge incorporated an estimated 28800 units of Tor-Shear Type High Strength (TTHS) bolts, which were subjected to C5 system painting, and included elastomeric bearings, all designed to ensure a lifespan of 100 years.
The steel structure was assembled at an elevation of 18 meters from the ground on temporary trestles and was pulled into position by employing the automatic mechanism of two semi-automatic jacks, each with a capacity of 250 tons, utilising mac-alloy bars.
OWG Bridges Completed so Far for Mumbai–Ahmedabad Bullet Train
This is the seventh steel Bridge out of the planned 28 steel bridges planned for the Mumbai-Ahmedabad Bullet Train corridor.
| Sr.No | Location | Length ( In meters) | Weight ( MT) |
| 1 | Across National Highway 53, Surat | 70 | 673 |
| 2 | Over the Vadodara-Ahmedabad main line of Indian Railways, near Nadiad | 100 | 1486 |
| 3 | Over the Delhi-Mumbai National Expressway, near Vadodara | 230 (130 + 100) | 4397 |
| 4 | Near Silvassa in Dadra & Nagar Haveli | 100 | 1464 |
| 5 | Over Western Railways, Vadodara | 60 | 645 |
| 6 | Over two DFCC Tracks and two Western Railways tracks, Surat | 100, 60 | 1432 |
| 7 | Over two DFCC tracks, near Vadodara | 70 | 674 |
| Total | 10,771 | ||
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