Arakkonam- Jolarpettai Section - Proposed Construction Of Precast Rcc Subway In Lieu Of Lc No.81 At Km.197/36-198/2 Between Vaniyambadi And Kethandapatti Stations ( Cut And Cover Method) . The Size Of Rcc Box Is 2X5.0Mx3.0M ( Inner Dimension) With Erection Of Temporary Girder.