This is the only main track in Kerala yet to be doubled and the single line traffic causes major delays in the route.

The initial proposed alignment of the railway line from Ernakulam Junction to Alappuzha has been changed after protests from various quarters.

Railway line has been included in the budget for 1979-80, with a proposed outlay, of Rs.

The Aroor Bridge is the Longest Bridge in this section having length of 1,849 m (6,066 ft) The total cost outlay was 7 crores and the total length of the railway line is 58 km (36 mi).

The construction of Alappuzha–Kayamkulam section was started as part of second phase of coastal railway development and the alignment was via Alappuzha–Punnapra–Ambalappuzha–Haripad–Kayamkulam.