This National Highway connects Kasba to Purnia, Siliguri, Guwahati, Kolkata, Muzaffarpur, Patna, Gorakhpur, Lucknow and Porbandar.
The National Highway spans from Kasba through Purnia, Siliguri, Guwahati, Kolkata, Muzaffarpur, Patna, Gorakhpur, Lucknow, and Porbandar.