Ahmedabad SG Highway overbridge opens between Karnavati and Sarkhej-Sanand, targeting relief for up to 2 lakh daily motorists. Union Home Minister Amit Shah on Monday inaugurated a crucial overbridge on the ISKCON-Sanand stretch of the National Highway in Ahmedabad, significantly easing traffic flow in a rapidly. Ahmedabad SG Highway bridge construction is nearly complete, with the six-lane overbridge expected to open by the end of October.