The second phase include extending the bypass by 13 km (8.1 mi) from Maduravoyal to Puzhal on the Chennai–KolkataNH16 and four-laning it. It also includes two interchanges. A clover-leaf grade separator at Maduravoyal Junction and a trumpet interchange at puzhal where the bypass phase II ends.
A 3.2 kilometres (2.0 mi) elevated six-lane corridor forms the part of the Phase II being executed currently. This elevated road cuts through the Industrial Estate in Ambattur. This corridor ends with a Road over bridge (RoB) crossing the Chennai–Jolarpet railway line. The elevated corridor was completed in June 2009 at a cost of ₹ 1000 million.