The Inner Ring Road (IRR), also known as Jawaharlal Nehru Salai or 100-Feet road or State Highway 2, is a major transportation corridor encircling the city of Chennai.

It is 25.2 km long with three distinct arms viz., Northern arm, Central arm and Southern arm, connecting SH 49A (Rajiv Gandhi Salai) in Tiruvanmiyur, Velachery main road at Vijayanagar, NH 32 (GST road) at Kathipara, NH 4 at Koyambedu, NH 205 at Padi, NH 5 at Madhavaram and joining SH 104 (TPP Road) at Manali.

The northern arm of IRR starts from Padi Junction and joins SH 104 (TPP) near Manali.

The southern arm of IRR extends from IT corridor in the form of Taramani Link Road and joins NH 32 at Officers Training Academy before ending at Kathipara Junction.

[2] The Chennai RBTW is being planned along the Taramani Link Road.