| Cost of 4/6 Laning of NHDP Projects under Implementation in Tamil Nadu (As on August, 2011) | |||
| Stretch | NH. No. | Project Cost (Rs. in Crore) | Anticipated Date of Completion |
| 4 laning of Tuticorin Port | |||
| 4 laning of Thanjarur - Trichy | |||
| 4 laning of Madurai-Arupukottai-Tuticorin | |||
| 4 laning of Pondicherry - Tindivanam | |||
| 4 laning of Trichy - Karur | |||
| 4 laning of Trichy - Dindigul | |||
| 4 laning of Salem-Ulundrupet (BOT-1/TN-06) | |||
| 6 laning of Chennai - Tada | |||
| 6 Laning of Krishnagiri-walajhapet section | |||
| 6 Laning of Hosur-Krishnagiri | |||
| New 4-Lane Elevated Road from Chennai Port - Maduravoyal | |||
| 4 laning of Chengapalli to Coimbatore Bypass and End of Coimbatore Bypass to TN/Kerala Border | |||
| 4 laning Tirupati -Tiruthani - Chennai(Approved Length 125.5 Km) Tamil Nadu[61.47]/Andhra Pradesh[63.23] | |||
| 4 laning of Development of Adequate Road Connectivity to Chennai -Ennore Port Connectivity | |||
| 2 Laning of Dindigul-Perigulam-Theni-Kumili | |||
| 2 Laning of Trichy-Karaikudi and Trichy Bypass (Approved length 100 km) | |||
| 2 Laning of Krishangiri-Tindivanam (Approved Length 170 Km.) | |||
