NHAI approves construction of 12 AUPs on Angul-Sambalpur Road Project September 11, 2023 | Approved, News & Developments, Project Updates The National Highway Authority of India (NHAI) has approved construction of 12 animal underpasses (AUPs) on Angul-Sambalpur Four Laning Project (NH-55) at a cost of Rs 1,110 million. This content is restricted.