State Highways in India are stretches with heavy traffic intensity of more than 10,000 Passenger Car Units (PCUs) but less than 30,000 PCUs which connects district headquarters, important towns and the National Highways in the state and neighboring states. The Construction & Maintenance wing of the Highways Department manages construction and maintenance of all the State Highways (SH), major district roads (MDR), and other district roads (ODR). The Tamil Nadu State Highways Network has eight circles: Chennai, Villupuram, Madurai, Salem, Tiruchirappalli, Coimbatore, Tiruppur and Tirunelveli. The state has a total of 286 state highways, 161 state highways urban (SH-U) stretches and 905 major district roads (MDRs), apart from other district roads (ODRs).

List of state highways

This is a list of state highways in Tamil Nadu (as of March 2019).

SH1 to SH50

SH51 to SH100

SH 101 to SH 150

SH151 to SH200

SH201 to SH234

List of state highways urban

This is a list of state highways urban stretches in Tamil Nadu (as of March 2019).

SHU to SHU50

SHU51 to SHU100

SHU101 to SHU150

SHU151 to SHU223