South Central Railway (SCR) on Friday announced the commissioning of its longest rail-on-rail (RoR) flyover, having a length of 2.2 km, on the Gudur–Manubolu section as part of a third line to facilitate cross-movement of trains between Vijayawada and Renigunta and Chennai and Vijayawada without detention of trains.
The flyover was constructed by Rail Vikas Nigam Limited (RVNL) and is the seventh such bridge in the zone, where the previous longest had been just 40-metre long. The new one, which is electrified, was built in two years using PSC (pre-stressed concrete) and composite girders with inherent high torsional resistance and lower overall maintenance costs.
An official spokesperson said in a press release that high-grade concrete and structural steel was used for the substructure, PSC girders and slab of the flyover and the work was done within the railway land, avoiding expensive land acquisition.
