Chennai: It took more than 800 workers, four heavy cranes, drivers of the earth, 14 tons of steel rolls, a ton of bar amplifier and many concrete grout to repair a 165-year-old bridge across the river and restore traffic in three days in the Arakkonam-Katpadi section, wrong one that is busied in this country.
It is a rare achievement for the southern train to complete work in a short time along the route that has 150 trains every day.
Authorities built a mini coffer dam to divert water to the adjacent bridge pier to create a safe workspace under the pillar to fix two cracks that have weakened the bridge in the middle in the middle.
Built when the first railway lane was placed in the south, the bridge (no.299) on the Ponnai River between Mukundarayapuram and Tiruvalam train stations was one of the oldest in the country.
The routine inspection team detects two cracks on the bridge on December 23.
The train was suspended traffic after the crack began to widen.
The train must suspend about 20 trains a day while some experienced delays in routes including Vellore, Coimbatore, Bengaluru and Thiruvananthapuram.
“The biggest challenge is to divert the flow of water to the adjacent dock.
The last time we saw such water flow in 1934.
We must convince the workers to drop the machine into the water to create a mini dam to create a safe workspace.
After this is done, Crane from a capacity of 220 tons and 140-tons is used to lift steel help and other materials to create support for the range.
We apply concrete grouting in high pressure so that it can seal slipches as small as 0.1mm.
“A parallel bridge turned out to be a blessing because of a number of trains Limited diverted.
It was also used to install lights to illuminate the old bridge to implement repairs.
At 8pm on December 26, the track was declared suitable, and the trial was carried out using locomotives and train goods.
“We have installed a strain gauge to check if there are signs of sinking or settlement in the place where improvements are made,” said an official.