MANILA - San Miguel Corporation said Wednesday it was waiting for the government's go-signal to implement expansion plans for several tollways.

SMC aims to expand the South Luzon Expressway (SLEX), Skyway system, NAIA Expressway (NAIAX) and the Southern Tagalog Arterial Road.

"All technical studies for the expansion of all our southern Metro Manila toll roads are now complete and ready for construction. We're just waiting to get final approval for each of these projects from the Toll Regulatory Board," SMC president Ramon S. Ang, said.

Ang said all of the projects can be finished within 3 years.

SMC plans to add a 5th lane to both the southbound and northbound lanes of SLEX to Calamba exit, effectively widening it to ten lanes.

It also plans to widen the elevated Skyway from Alabang to Sucat by two lanes, as well as extend it to the Alabang viaduct.

The company is also looking to extend the new NAIA Expressway all the way to Bonifacio Global City, and extend its ramps from the NAIA Terminal 1 and 2 areas all the way to SM Sucat, where it can link up with the C5 extension.

Ang said SMC is also planning to build a down ramp from the northbound elevated Skyway towards C5/BGC.

"These are all just improvements, extensions of existing expressways, so we are hoping that the TRB can review and act on our submissions at the soonest possible time," Ang said.