It has a total length of 220 kilometres (140 mi).

[2] It connects Mysore with the hill station of Madikeri and the port city of Mangalore.

[3] The road is also used as an alternate route to connect Mysore to Northern Kerala via Hunsur, Gonikoppa and Kutta.

[4] In 2010, the Karnataka Police deployed police vehicles to ensure safety on the highway.

[6][7] In August 2013, Kodagu district administration had closed down the road after water seepage from incessant rainfall had caused huge cracks to develop on the road.