National Highway 81
| National Highway NH81 in India | |
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| Basic data | |
| Operator: | National Highways Authority of India |
| Overall length: | 100 km |
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National Highway 81 ( NH 81 ) is a major trunk road in northeast India with a length of 100 kilometers. It begins in Korha in the state of Bihar at NH 31 and after 45 km through this state leads another 55 km through the neighboring state of West Bengal , where it ends in English Bazar at NH 34 .