| Country: | IND |
| Type: | NH |
| Route: | 12 |
| Length Km: | 675km (419miles) |
| Image Notes: | NH 12 at Barasat |
| Map Custom: | yes |
| Terminus A: | Dalkhola |
| Terminus B: | Bakkhali |
| States: | West Bengal : 612km (380miles) |
| Previous Type: | NH |
| Previous Route: | 12 |
| Next Route: | 112 |
| Next Type: | NH |
National Highway 12 (NH 12), previously NH 34, is a National Highway in India which runs entirely in West Bengal. It runs from its junction with NH 27 at Dalkhola terminating at Bakkhali.[1]
NH 12 originates from its junction with NH 27 at Dalkhola in Uttar Dinajpur district and passes through Karandighi, Maharajahat Raiganj, Gazole, Malda, passes over the Farakka Barrage, Umarpur, Aurangabad, West Bengal Murshidabad, Baharampur, Beldanga, Bethuadahari, Krishnanagar, Ranaghat, Barasat, Belgharia Expressway, Dankuni, Santragachi, Behala, Joka, Amtala, Diamond Harbour, Kakdwip .
In 2020, widening of a stretch of 66km (41miles) from Jagulia to Krishnanagar in Nadia began.[2] From 2021, works ongoing for Baharampur Bypass construction to bypass Baharampur Town, Road Overbridge at Ranaghat, Down Bridge on River Jalangi at Krishnanagar & River Churni at Ranaghat are being constructed. Work on Shantipur Bypass is being made along with construction of Kalyani Expressway link at Barjaguli is ongoing. Plan is to link NH 19 at Dankuni with NH 12 at Barjaguli via Kalyani, New Ishwar Gupta Bridge, Magra, Baidyabati, Serampore(Srirampur) & Uttarpara, so that Trucks going to Northern West Bengal from NH 16 & NH 49 can bypass Kolkata, Barasat & Jessore Road decreasing pressure on NH 12. Reconstruction of Kalyani Expressway from Belghoria Expressway is also being executed under NH 12 redevelopment scheme.
In 2021 union budget, central government allocated highway projects for four election bound states, of which was allocated for the development of 612km (380miles) of this highway.[3]
All of NH 12 is located within West Bengal. Below is the list of all the toll plazas (districtwise) from Bakkhali to Dalkhola.[4]
The highway starting from Barasat to Belghoria is part of the AH1 (Asian Highway 1) network, which starts from Tokyo, Japan and ends in Istanbul, Turkey.