sentences:  The structure was built at an estimated project cost of with an initial deadline of March 2007.It is the first of three grade separators being built on the Inner Ring Road to improve connectivity between the various National Highways radiating from the city, the other two being the one on Koyambedu junction (NH 4) near the Chennai Mofussil Bus Terminus and the one at Padi Junction (NH 205).The main span of the flyover connecting Inner Ring Road and GST Road was opened to traffic on 9 April 2008 and the entire section was opened to the public on 26 October 2008.