Projects worth Rs 33,690 crore were approved on Monday with the aim of creating additional infrastructure for Mumbai's suburban railway network, often called the lifeline of the country's financial capital and its adjoining metropolitan region, an official said.

Maharashtra Chief Minister Eknath Shinde, Deputy CM Devendra Fadnavis, and officials of the Mumbai Railway Development Corporation were present when the projects were approved, he said.

"The projects include laying of the fifth and sixth lines between Borivali and Virar on the Western Railway. Similarly, the third and the fourth line between Kalyan and Badlapur (15 km) on Central Railway was also approved," a statement from the CMO said.

"Another major decision is extending the current Harbour line from Goregaon to Borivali, which is a seven km distance. All these works will help the railways run more suburban as well as long-distance trains," the official said.