No. 2 ayye pani kaadhu sir. Normal gaane elevated, electrified track (for Metro) ki cities lo almost 250 crores per km avutundhi. Adey main line trains (locomotive hauled trains) ki aithe, daniki atleast 1.5 times avutundhi.
And Vizag antha hilly region, so track lo gradients lekunda mainline trains velletattu kattalante just within the city line ke easy ga 5000 crores paina avutundhi.
Antha chesaka trains speed takkuva untundhi (heavy main line trains flyovers meedha speed ga vellalante chaala invest cheyyali), plus goods trains...
more... ee route lo elagu raavu,so antha investment chesaka returns kuda emundavu. And main line trains ki clearances ekkuva kavali, so land acquisition peddha problem avutundhi.
Madras lo unna elevated corridor local trains ki matrame. So, construction difficulties emundavu. Plus Madras lo elevated line antha Buckingham canal pakkane veltundhi. So, vadiki land acqusition issues em raledhu.