Nallapadu–Nandyal section

Nallapadu–Nandyal section connects Nallapadu and Nandyal of Guntur district in the Indian state of Andhra Pradesh. Further, this section converges with Nallapadu–Pagidipalli section at Nallapadu. The branch line is an electrified single-track railway.

Meter Gauge & Broad Gauge Era
Nallapadu–Nandyal section was constructed as a Meter Gauge railway line in 1891/92 by the British. The Magnificent Dorabhavi Viaduct used to span in the Nallamalla Range. The Viaduct 1024 m long spanning over 8 high pillars around 125 m was an architectural & engineering wonder. The Viaduct was dismantled after the Guntur Junction–Guntakal Junction section was made Broad Gauge in 1997/98. The 1350 m long Bogada Tunnel & 1250 m long Chellama Tunnel in the Meter Gauge alignment were sealed in 1997/98 & a new 1600 m long Bogada Tunnel & 1000 m long Chellama Tunnel were constructed in 1997/98 in the Broad Gauge line. Guntur Junction–Guntakal Junction section is 401 km long & currently doubling of Nandyal & Guntakal is going on.

Important trains
Vijayawada-Hubballi Amravathi Express, Shalimar(near Howrah)-Vasco Da Gama(nearMadgaon) Amravathi Express, Bhubaneswar-Bengaluru Prasanti Express are the legendary trains in this route. Vijayawada-Hubballi Amravathi Express & Bhubaneswar-Bengaluru(ErstwhileVijayawada-Bangalore) Prasanti Express were previously Meter Gauge era trains, later re-introduced in Broad Gauge post gauge conversion in 1997/98. Amravathi Express was extended to Howrah on 2008. Recently Howrah-Satya Sai Express & Kondaveedu Express Train are also heavy demand trains in this route.

Jurisdiction
This branch line is having a length of 256.9 km and is administered under Guntur railway division of South Central Railway zone.