Chennai: With the entire elevated corridor of the Chennai Metro Rail becoming operational, officials have begun trial run on the seven-km underground stretch from Thirumangalam to Nehru Park. The line is likely to be commissioned by March 2017.
Tunnelling, track work and construction of eight stations on the stretch had been completed. Tracks were checked by operating a four-car train and engineers tested the signals. Officials said the inspections by the Research Designs and Standards Organisations and the commissioner of metro railway might take place soon after metro rail submitted details of the line and sought inspection.
When the 7km stretch gets operational, it will be the city’s first transit service running underground, cutting across
arterial Poonamallee High Road.
Work on a 2-km stretch between Thirumangalam and Shenoy Nagar got over much ahead of the airport line’s completion. However, the nine-km elevated line from Saidapet ramp to airport was opened in September 2016 before the underground line, as officials were aware of the issues involved during inspections to get the final nod.
“With underground stretch, we do not know what issues may arise during inspections. So, we are conducting internal trial runs before we seek official inspections,” a metro rail official said.
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