It starts at National Highway 44 junction at Kurnool and passes through Kadapa and Chittoor and terminates at Ranipet in Tamil Nadu.

The highway was transformed into four lanes between Kurnool and Kadapa .

It starts at Kurnool and passes through Nandyal, Allagadda, Mydukur, Kadapa, Rayachoti, Pileru, Chittoor and ends at Ranipet.

The 408-km highway runs for a distance of 381.00 km (236.74 mi) in Andhra Pradesh and 27.00 km (16.78 mi) in Tamil Nadu.

[2][3] Kurnool ↔ Nandyal ↔ Allagadda ↔ Mydukur ↔ Kadapa ↔ Rayachoti ↔ Pileru ↔ Chittoor ↔ Ranipet Route map