Deputy Ports and Highways Minister Nirmala Kotelawala has told parliament that the toll highway has earned a monthly income of around Rs. 83-85 million.

Around 283,000 vehicles traveled on the Southern Expressway each month since opening.

The 95-km four-lane highway from Kottawa to Galle constructed at a cost of around Rs.70 billion was opened on November 27, 2011. It is to be extended to Matara from Galle under the second phase.