National Highway 30
| National Highway NH30 in India | |
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| Basic data | |
| Operator: | National Highways Authority of India |
| Overall length: | 230 km |
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National Highway 30 ( NH 30 ) is a main highway in the state of Bihar in northeast India with a length of 230 kilometers. It begins at the NH 2 in Mohania, after about half of its course crosses the Son River and then runs parallel to the Ganges via the capital of the state of Patna to Bakhtiarpur to the NH 31 .