| Country: | IND |
| Type: | NH |
| Route: | 31 |
| Length Km: | 990 |
| Map Custom: | yes |
| Direction A: | West |
| Terminus A: | ICICI Bank, Unnao Branch Unnao. |
| Destinations: | Lalganj, Raebareli, Salon, Pratapgarh, Machhlishahr, Jaunpur, Varanasi, Ghazipur, Ballia, Chhapra, Hajipur, Patna, Bakhtiyarpur, Barh, Mokama, Begusarai, Khagaria, Bihpur, Naugachia, Gosaingaon, Kursela, Kora, Katihar, Harishchandrapur, Tulshihata, Chanchal,Samsi,Malda |
| Direction B: | East |
| Terminus B: | Kodubari Morh, Gazole, |
| States: | Uttar Pradesh, Bihar, West Bengal |
| Previous Type: | NH |
| Next Type: | NH |
| Previous Route: | 27 |
| Next Route: | 12 |
National Highway 31 (NH 31) is a primary National highway of India. It starts near ICICI bank, Unnao Branch in Unnao at Uttar Pradesh, passes through Bihar, and terminates at its crossing with State Highway 10 (West Bengal) at Kodubari Morh in Gazole at Malda district of West Bengal. The road continues as SH 10 (WB), which connects Gazole to Hili near Bangladesh Border (Hili Railway Station).[1] The highway is being made 4 lane currently between Unnao & Raebareli, between Katihar & Begusarai, between Ghazipur & Ballia, between Bakhtiyarpur & Nawada & between Mokama & Barh. 4 lane part is already operational between Raebareli & Ghazipur.
National highway 31 transits 990km (620miles) across three states of India in east - west direction.[2]
Unnao, Lalganj, Raebareli, Salon, Pratapgarh, Machhlishahr, Jaunpur, Varanasi, Ghazipur, Ballia
Chhapra, Hajipur, Patna, Bakhtiyarpur, Nawada, Mokama, Barh, Begusarai, Khagaria, Bihpur, Kora, Katihar
Harishchandrapur, Samsi, Gazole, Malda.
Terminal at Unnao
near Lalganj
near Raebareli
near Salon
near Pratapgarh
near Pratapgarh
near Pratapgarh
near Mungra Badshahpur
near Jaunpur
near Jaunpur
near Jaunpur
near Varanasi
near Ghazipur
near Phephna
near Ballia