Three Main roads which constitutes 14.9km serve Nagapattinam town. They are Nagapattinam-Guddalur State Highway(3.2km), Nagapattinam-Karaikkal District Road and kilvelur Road which passes on the norther side of the town. The internal road network of Nagapattinam consists of two parts. The old port town has a circular pattern of road system interconnected by cross roads and Nagore on the northern side which is mainly residential locality has a grid pattern, and these two parts are connected by a single road. The type and length of roads maintained by the municipality are given in Table.
The existing status of roads in this town are
Local Road Network Details
| Surface Type | Roads in Kms | ||
| Cement Concrete | 44.875 | ||
| BT | 76.372 | ||
| Earthen | 2.027 | ||
| Total Length | 123.274 | ||