Kakinada mainline is not feasible or required techincally. There is a bypass at Samalkot and the distance from Pithapuram to Kakinada town station will be 20km. The new line proposed is also 20 km and it goes to Kakinada Town railway station with joint in Samalkot Kakinada line. The train has to reverse direction to go to Kotipalli line or back to Samalkot. So there is no possibility of mainline due to increase in 20km distance from Visakhapatnam to Vijayawada.