State Highway 42 is a 30 km-long stretch that connects
Palakkad Town on
National Highway 47 with Gopalapuram near the
Kerala–
Tamil Nadu border. On the way, the road crosses
State Highway 26 at Athicode Junction. Beyond Gopalapuram, the highway continues its way up to
Pollachi in Tamil Nadu – this part of the stretch is under the administration of Tamil Nadu government.
