NH12 or Sunkoshi Corridor (Nepali: सुनकोशी करिडोर) or Ghurmi-Regmitar-Barkhadada road is a National Highway that runs through the Hills of Udayapur District, Bhojpur District and Khotang District of Koshi Province, Nepal. It is currently under construction. The total length of the highway is calculated to be 163 kilometres (101 mi).[1][2] The highway starts at Ghurmi (Udayapur) being separated from NH03 and runs parallel to the Sunkoshi River until Thanagaun (Tapli Rural Municipality) before it crosses the Sunkoshi river and enters into Khotang District. It then runs parallel to the Sunkoshi River again until it reaches Regmitar. The highway then crosses NH16 at Regmitar (Rajapani). The highway continues on to Damarkhu where it crosses the border of Khotang District and enters into Bhojpur District. This section of road runs in the Aamchowk Rural Municipality of Bhojpur District before it crosses the Sunkoshi River again and enters into Udayapur District again at Ranitar of the Chaudandigadhi Municipality then moves east and enters to Belaka Municipality. It finally merges with NH03 at Barkhadanda near Chatara Koshi bridge.

National Highway 12 shield}}
Sunkoshi Corridor
सुनकोशी करिडोर
राष्ट्रिय राजमार्ग १२
National Highway 12
Map
NH12 in red
Route information
Maintained by MoPIT (Department of Roads)
Length163 km (101 mi)
Major junctions
East endBarkhadada
Major intersectionsRegmitar
West endGhurmi
Location
CountryNepal
ProvincesKoshi Province
DistrictUdayapur, Bhojpur, Khotang
Highway system
NH11 NH13
NH12 (in detail)
# Section Link Section Name Length (KM) Area
1 NH12-001 Ghurmi-Thanagaun 26.21 Katari Municipality
Tapli Rural Municipality
2 NH12-002 Thanagaun-Regmitar 22.21 Halesi Tuwachung,
3 NH12-003 Regmitar-Darmarkhu 72.91 Diprung Rural Municipality
Khotehang Rural Municipality
Jantedhunga Rural Municipality
4 NH12-004 Darmarkhu-Ranitar Bazar 12.92 Aamchowk Rural Municipality
5 NH12-005 Ranitar Bazar-Barkhadada 28.75 Chaudandigadhi Municipality
Belaka Municipality
NH12 Ghurmi-Regmitar-Barkhadada 163 Koshi Province
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References

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  1. ^ "Statics of National Highway 2020_21" (PDF). Nepal in data. Department of Roads (Nepal). 2021-09-22. Retrieved 2024-06-17.
  2. ^ "Statics of Stretgic Road Network". Department of Roads (Nepal). 2023. Retrieved 2024-06-17.