Chennai is home to the second largest vehicular population in India, behind New Delhi. The total road network in the city's metropolitan area is 2,780 km. With Chennai's vehicular population having experienced a surge in the late 1990s, several flyovers were built to reduce the traffic congestion in the city. Of about ₹ 15,600 million invested by the state government between 2005 and 2014, Chennai cornered a major chunk of the investment. As of 2014, there were 22 functional flyovers in the city and about 30 bridges, catering to the city's vehicular population of about 3.9 million, including about 600,000 cars. In addition, more than 36 flyovers are in the pipeline.