AH45 is a route of the National Highway Network of India, running 2116 km from in Kolkata to Krishnagiri. This route is composed of NH 16 and part of NH 48 from Chennai to Krishnagiri.

Route

The route shares a large portion of various Indian National Highways; namely NH 16 and NH 48. It passes through Berhampur, Bhubaneswar, Cuttack, Jajpur, Bhadrak, Balasore, Baripada and ends at Jharpokharia, where it meets NH 16 in Odisha. In Andhra Pradesh, it passes through most of the coastal towns in ten coastal districts and covers the cities of Vizianagaram, Srikakulam, Visakhapatnam, Tuni, Rajahmundry, Kovvur, Eluru, Vijayawada, Mangalagiri, Guntur, Chilakaluripet, Ongole and Nellore. In Tamil Nadu, it passes through Gummidipundi in Tiruvallur district and enters Chennai. NH 16 has a total length of 1764 km and passes through the states of West Bengal, Odisha, Andhra Pradesh and Tamil Nadu. Route length in states: NH 48 has a total length of 352 km and passes through the state of Tamil Nadu connecting Chennai & Krishnagiri near Karnataka Border.