Kona Expressway (part of NH12, not to be confused with Kona Highroad or NH117) is a four-lane (with two service lanes) 14.17-kilometre-long (8.80 mi) grade-separated, tolled expressway in the suburban fringes of Kolkata, West Bengal. It is one of the most important entries to Kolkata. As of November 2022, the road carries more 70,000 vehicles per day. The road links National Highway 16 (India) (NH 16) near Kona, Nibra to Vivekananda Setu, which leads to Kolkata. The expressway is part of NH 12. From Wikipedia