Kolkata, Dec 3 (IANS): Aiming to evolve into a world-class airport with the state-of-the-art technologies and amenities, major improvements are under way in the city's Netaji Subhash Chandra Bose (NSCB) International Airport that handles 11 million passengers annually.

"We are resurfacing the main runway of the airport to category 3B. Kolkata airport will become the second airport after Delhi in India to have this. The process will be completed by December 2015," B.P. Sharma, NSCB Airport director, told IANS.

This project is estimated to cost Rs.125 crore.

Also, the city airport is improving the central tower and making it 86 metres high for improved traffic control at a cost of Rs.280 crore. It is projected to be completed by December 2016.

Besides, the airport is upgrading its fire fighting capability to Category 10 and a new fire station is being built. This project will be completed by March 2015.

The airport can handle 25 million passenger traffic after the upgradation.