National Highway 312 (India)
National Highway 312, commonly referred to as NH 312 is a national highway in India. It is a secondary route of National Highway 12,  which runs in the state of West Bengal in India. Route 
The road connects

Murshidabad district
Jangipur, Omarpur, Lalgola, Bhagawangola, Murshidabad, Chunakhali, Islampur, Domkal, Jalangi

Nadia districts
Karimpur, Nazirpur, Haripur, Betai, Debnathpur, Tehatta, Chapra, Krishnanagar, Hanshkhali, Duttapulia

North 24 Parganas
Baneswarpur, Helencha, Bangaon, Berigopalpur Ghat, Ichamati, Tarnipur Ghat, Swarupnagar and Basirhat (Ghojadanga)

Junctions  
  Terminal near Jangipur. Gaighata-Basirhat road junction near Gaighata 
  SH 3 near Bangaon Motiganj

Redevelopment
In 2022, National Highway Authority of India allocated  to redevelop  of the highway into  wide 4 lanes. The highway was expected to be completed by 2024. However, land acquisition related issues at various places is causing the delay for the project by several years. 