This new line in Andhra Pradesh has been in the news lately. It is similar to the Dedicated Freight Corridors in that it is primarily meant for freight traffic (iron ore export) and there is no present plan to use it for passenger services.
There are, of course, a number of short freight-only lines on IR. This line is unusual in that it is over 100 km long and because it may well serve as a short cut between widely separated parts of a state. And it is electrified from the start.
A very brief summary is here:
See p 35 of the pdf which corresponds to p 33 of the booklet.
A map of the route:
While this is a screenshot from a TV report, it must have been an official map to start with.
The list of stations can be got from the RBS tables (where you have to ask for the “goods” option rather than “coach”).
There are some discrepancies between this table and the map shown above. Perhaps all the stations have not been completed yet.
It would be useful for passenger services between Kadapa and the east coast from Nellore and beyond, as Renigunta and Gudur would be bypassed.
But presently there is a problem with this, which will be apparent from this map of the eastern end of this line:
The new line crosses a flyover (between Kommarpudi and Venkatachalam) over the Gudur-Vijayawada line with no simple connection to the latter. Thus a prospective Nandalur-Gudur passenger or Kadapa-Vijayawada Express would have to reverse at Venkatachalam Road.
The route includes a tunnel about 6.6 km long (between Cherlopalli and Rapuru) which is being described as the “longest electrified rail tunnel in India” which may be correct today. But there will be longer tunnels in J and K which will be electrified over the next few years.
Details here: https://en.wikipedia.org/wiki/List_of_rail_tunnels_in_India_by_length
There are numerous video clips (in Telugu) on Youtube describing this route with an emphasis on the tunnel.
Also see these pictures of some of the intermediate stations: