BEIJING - China will reinforce its networks of expressways and high-speed railways during the 2010-2015 period to facilitate the nation's economic growth, the draft 12th Five-Year Plan unveiled Saturday.

By the end of 2015, total length of the high-speed railway network will reach 45,000 kilometers, covering almost all cities with a population of more than 500,000.

The construction of a railway linking Tibet autonomous region and Sichuan province in Southwest China will be considered, said the document.

The total length of expressways will reach 83,000 km, covering cities with a population of more than 200,000.

Megacities including Beijing, Shanghai and Guangzhou will have complete urban light rail networks by 2015.

A new airport will be constructed in Beijing. A number of airports will also be built or expanded across the country.