The total length of National Highways in Bihar is:

Explanation

According to the Bihar Economic Survey, 2015–16, the length of National Highways in Bihar increased from 3410 km. in 2001 to 4595 km in 2015. As per the Bihar Economic Survey, 2024–25 (status as of September, 2024), the total length of National Highways in Bihar is 6130 km, while according to the Annual Report, 2024–25 issued by the Ministry of Road Transport and Highways, Government of India, the length of National Highways in Bihar was 6132 km as of 31 December, 2024. ## Page 11