National Highway 231 (NH231), total length: 196 km (122 mi)
States: Bihar
Route：Madhipura－Purnia－Bangaon－Saharsa.
National Highway 231 (NH231) MapNational Highway 231 (NH231) Traffic Weather Conditions along National Highway 231 (NH231) Cities along National Highway 231 (NH231) Petrol Stations along National Highway 231 (NH231) Restaurants along National Highway 231 (NH231) Hotels along National Highway 231 (NH231) more service along National Highway 231 (NH231)