Planning the Bridge
The bridge was conceived in 2002 during the tenure of former Prime Minister Atal Bihari Vajpayee. He laid the foundation of the project in 2004. But four years later, in September 2008, it was declared unsafe and the construction work was stopped. Later, in the second term of the Congress, the bridge was resumed in 2010. It was then targeted for completion in 2015. In the meantime, there were hurdles and the bridge was being used. After the Narendra Modi government came in 2014, the project was given special attention. This time the construction work was targeted for completion in 2019. But the deadline increased once again. Now, there are reports that the bridge will be fully completed by December 2022.
- Unique Features of this Bridge
- Bridge designed to withstand high wind speed up to 266 Km/Hour.
- Bridge designed for blast load in consultation with DRDO for the first time in India.
- Bridge designed to bear earthquake forces of highest intensity zone-V in India.
- First time on Indian Railways, a Phased Array Ultrasonic Testing machine used for testing welds.
- First time on Indian Railways, National Accreditation Board for Testing and Calibration Laboratories (NABL) accredited lab established at site for weld testing.
- Extensive health monitoring and warning systems planned through state of art instrumentation.
The arch which was planned is so big in magnitude that whole new Design codes were developed for this project alone. there were no design codes for building such project in India. BS 5400 was taken as a reference code for this structure. The arch technique (hanging arch) is being used to build the Chenab bridge. Chenab Bridge is really an Outstanding Civil engineering Project. The bridge will be equipped with online monitoring and warning system. in Blast-proof steel has been used in the construction of the bridge. The structure is so powerful that even 40 kilograms of explosives will not be able to do anything.
A Bridge of this magnitute is only as good as strong as its Foundation. young himalayan mountains provides serious cahllenges for the cosntruction for the design and cosntruction of foundation and slope stabilization easusers.
It was decided to carry out the slope stabilization and then build piers that will stabilize the bridge and give its strength. Foundations and the approach viaduct piers are made of concrete. The bridge is founded on the bedrock. The foundations of the arch are approximately 40 m high and 50 m wide.
No Ordinary Pillars
Its pillars are not ordinary. Such a structure requires a very strong base. Therefore, the pillars of the bridge have a base of 36.5 meters long and 50 meters wide. The bridge is being constructed in accordance with the seismic zone-5 associated with the earthquake. You understand that this bridge can also withstand an earthquake of 8 magnitudes on the Richter scale.
The bridge will have two tracks. The width of one will be 14 meters. There will also be a 1.2-meter wide path for inspection of the bridge. Maintenance work can be done even if the train is passing through the bridge. The ropeway will feature a lift. Sensors will be installed. It will be known immediately when the malfunction occurs.
Project Cost & Lifespan
The lifeline of the bridge will be around 120 years. Trains can run at a speed of 100 km. The construction of the bridge will cost about Rs 1200 crore. In this project, 15 major institutions of the country including DRDO are helping Konkan railways. The construction of a rail bridge on Katra and Banihal routes, 111 km long, will connect the country through the Kashmir railway line. There is now a rail between Banihal and Baramulla, but there is no rail between Katra-Banihal. A part of the project, which is 100 km long between Katra and Dharam, is being constructed by Konkan railway, a 52 km rail route. It has a 46.1 km (86%) Way tunnel and 5 km (9%) The path goes through the bridge.
Tunnels & Bridges in the JUSBRL Project
There are 17 tunnels in this route. The longest tunnel is 9.3 km long. There are 23 bridges with the highest bridge of 91 meters. Many challenges faced Needless to say, it was not easy to build the world’s highest rail bridge. The biggest challenge here is the weather, which changes from moment to moment. This place is also very sensitive in terms of earthquakes. This area falls in Seismic Zone-4. Therefore, earthquakes of the last 100 years within 350 km of the Chenab River were studied for the construction of the bridge. The design of the bridge was then designed. It also studied winds of 266 mph.
After designing the paper, it was now the turn to land. Big machines were needed to build this bridge. It was also a big problem as to how the goods in the construction of the bridge would reach. For this, an approach road was constructed to bring heavy dumper goods and other construction-related machines here. Special arrangements were also made to avoid falling debris in the river during construction. In addition, the blast to prepare the base blew up as much part of the mountain as was necessary. This was done through control blasting. The bridge is being built by an infrastructure engineering company named Afcons Infrastructure Ltd.
Congratulations to all
Such a Super Critical, Highly Complex, Extreme Engineering and Giant Project is an Incredible feet of Extraordinary Achievement in the world of civil engineering. A big thanks and greeting to each and everyone on the behalf of Team EACE. we are so proud of you.
Heartiest Congratulations!! and Kudos to The Mgmt and everyone involved from AFCONS Infrastructure Limited – A Shapoorji Pallonji Group Company and all external Professionals, Agencies and Organizations, who demonstrated a rare display of collaboration as well as innovative Teamwork to realize this Master Class Gigantic Structure, and that also in such a critical Hilly terrain with very minimal access and High challenges and Risks of Logistic Mgmt and rest everything else Sincerest Gratitude to all Central Govt and State Govt Dept to help support smooth progress in realizing this Mega Projects, on which the entire Nation is Proud of.
It will be the world’s highest railway bridge after it is completed. It is now considered a stupendous engineering pattern.