kolkata faced with inordinate delays in getting sites for metro construction rvnl has now hit the panic button the agency implementing the new gariaairport corridor has written to the state traffic department to inform that it cant meet the december commissioning target for the elevated lines 4km extension beyond ruby unless a traffic block along the western flank at tagore park is given immediatelya truncated 5km of the 32km new gariaairport line from new garia to ruby is ready for launch the viaduct on which tracks are laid is continuous till metropolitan save the 76m gap after the ruby crossing the extension is crucial as commuters will be able to travel 41km from dakshineswar to east kolkatas metropolitan crossing via kavi subhas terminals interchange at new garia on metro to fill the 76m viaduct gap rail vikas nigam ltd rvnl needs to completely cordon off the science citybound or western flank first a pillar number 166 has to come up followed by phased launching of a 76m special span girder for which around 200 pieces of steel will have to be assembled on site before claiming the site rvnl had to construct a new 11m culvert on the eastern side of bypass above the canal the plan is to divert traffic through this road created on the eastern side of the existing southbound lane from tagore park to calcutta international school cis while the metro viaduct comes up between pillars 165 and 168 during the construction the science citybound vehicles would cross over to the other flank and take the newly built culvertafter a joint site inspection by traffic department kmda kmc and rvnl last august the state issued noc for the metro construction at this site a railways engineer said rvnl is currently constructing the pier cap for pillar 166 the pillar will be erected soon and rvnl will need the bigger blockade for girderlaunching between pillars 166 and 167 an official saida kolkata police officer said rvnl is supposed to create space on eastern flank too by building another culvert a senior kmda official said we are supposed to build this culvert but this wont start now the metro viaduct launching can be done and traffic block given traffic volume is high here metro barricading will cause trouble during rush hours a traffic cop said