State Highway 3 is a State Highway in Kerala, India that starts at Nedumangad Toll junction and ends at the Kadukkara near Kerala - Tamilnadu border. The highway is 37.5 km long and runs parallel with the Western Ghats until the Aralvaimozhi pass. It is made up partially by the existing Aralvaimozhi - Nedumangad royal state highway of Travancore. The road runs parallel to Western Ghats till the Aralvaimozhi pass.