The Union Ministers and Chandrababu also flagged off a new passenger train between Nandyala and Kadapa on the occasion.
They inaugurated the facilities through a remote video link from Vijayawada in the presence of state ministers, MPs and senior railway officials.
Noting that poor connectivity caused disparities in growth of different regions within a particular state, Prabhu said, "we want to make sure connectivity will be the keystone."
"For this, infrastructure is needed and the railways has to provide most of it as it is the important backbone of industry and socio-economic development," Prabhu added.
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Venkaiah Naidu said the Nandyala-Yerraguntla railway line was a dream of the late Prime Minister P V Narasimha Rao.
"He represented Nandyala in Lok Sabha. His dream has now come true. You can calculate how many years it took for that to happen," Venkaiah observed.
"As it would take 40 years to complete all railway projects promised so far, Prime Minister Narendra Modi asked Suresh Prabhu not to take up any new projects," he said.
The 123-km railway line was built at a cost of Rs 967 crore and connects Kurnool and Kadapa districts of Andhra Pradesh.
This will also directly connect the Rayalaseema region with the state's new capital Amaravati. The new line will gave a fillip to industrial activity in Kurnool and Kadapa districts that have a large mineral base, particularly the cement industry.
The passenger train will provide access to large parts
of Kurnool and Kadapa districts and cater mostly to traders, students and employees commenting between Nandyala and Kadapa.
It will also connect holy places like Yaganti Venkateswara Swamy temple, Hussain Shah Vali dargah and Jain temple at Danavulapadu.