VIJAYAWADA: The Ministry of Railways has sanctioned the doubling of the rail line between Gooty and Pendekallu in Andhra Pradesh. The 29.2 km rail line project will be taken up at an estimated cost of `352.8 crore. Indian Railways has already sanctioned doubling of the railway line between Pendekallu and Guntur as part of the Guntakal – Guntur doubling project, for which works are already in progress.