Prime Minister Manmohan Singh today inaugurated the third terminal of Indira Gandhi International Air Port in Delhi. This is the sixth-largest airport terminal in the world. The operations of international airlines will start from this terminal from 16th of this month. This modern air terminal has the capacity to cater to 34 million passengers annually. <br/> <br/>Speaking on the occasion, Singh called for bridging infrastructure deficit for speedy economic growth of the country. Hailing the role of agencies and the civil aviating ministry for speedy completion of the terminal, Singh said the Airport, ranked 21st best Airport in the World, will soon be among the first ten best airport across the globe. He said India needs huge investment in the infrastructure sector. He said $120 billion investment is needed only in aviation sector. The Prime Minister asserted that the successful completion of the project has proved that the public private partnership model for infrastructure is very successful. Dr. Manmohand Singh said that there will be phenomenal rise in the Air Traffic by 20-twenty. It is expected to touch between 160 to 180 million passengers in the domestic sector annually and 50 milion in the International. <br/> <br/> UPA Chairperson Sonia Gandhi, who was also present on the occasion, complemented the agencies and the Ministry responsible for completion of the project and reiterated UPA pledge to provide cheap and better infrastructure and transportation facilities. <br/> <br/>Earlier, the Civil aviation Minister Parful Patel said that Metro Airports in Mumbai and Kolkata will be ready by next year and 25 other non metro Air Ports will also be completed soon. Delhi Chief Minister, several Union Ministers and Member of Parliaments were present on the occasion. <br/>