State Highway 15 is a 57 km-long stretch that links Ettumanoor
on M C Road
with the commercial capital of Kerala
. The highway spans across Kottayam
districts and touches some major cities and towns on the way.
State Highway 15 starts at Ettumanoor and runs north-west through Manjur, Kaduthuruthy and Thalayolaparambu, dips southwards to touch Vaikom, and again turns northwards and moves ahead to enter Ernakulam. Kulayettikara is the first settlement falling along the highway in Ernakulam District. Beyond Kulayettikara, State Highway 15 continues its way north, through Mulanthuruthy and Kureekad, to join State Highway 20 at Tripunithura. Again proceeding north, the State Highway 15 touches Vyttila and merges with National Highway 47 at Pulikkal Junction.