| Chennai Bypass Road | |
|---|---|
 Chennai Bypass Road in red | |
 | |
| Route information | |
Part of  AH20 | |
| Maintained by National Highways Authority of India (NHAI) | |
| Length | 32 km (20 mi) |
| Existed | 2010–present |
| Major junctions | |
| From | Puzhal, Chennai district |
| To | Perungalathur Chennai City, Chengalpattu district |
| Location | |
| Country | India |
| Major cities | Maduravoyal, Ambattur, Porur Chennai City |
| Highway system | |
| Chennai HSCTC | |
The Chennai Bypass Road is a full-access controlled expressway that interconnects four radial Indian National Highways around Chennai, India covering a distance of 32 km (20 mi) from Perungalathur (near Tambaram) on NH-32 to puzhal on NH-16 via Maduravoyal at a cost of ₹ 4.05 billion. Constructed as part of the National Highway Development Project to decongest the city of transiting vehicles, the expressway interconnects NH-32, NH-48, NH-716 and NH-16. This expressway now forms a part of the circular transportation corridor.