Chittoor – Thatchur Expressway – Information & Status

116.1 km Chittoor – Thatchur Expressway (NH-716B) by NHAI is an under construction 6 lane access-controlled corridor with a route alignment connecting Keenatampalli near Chittoor (Andhra Pradesh) with Thatchoor – near Ponneri & Ennore (Tamil Nadu).

This greenfield highway will link the 262 km Bangalore – Chennai Expressway near Chittoor (KM 152) with the 133 km Chennai Peripheral Ring Road (CPRR project) at Kannigaipair with which 10.45 km will overlap – taking the overall project length to 126.550 km.

The project was approved for construction under the Bharatmala Pariyojana Phase 1 program and its Detailed Project Report (DPR) was prepared by Louis Berger Group Inc.

  • Total Estimated Cost: Rs. 3,197.56 crore
  • Total Length: 116.10 km
  • Lanes: 6
  • Status: Under Construction and Land Acquisition
  • Land Required: 885.5 hectares (525 ha. in Andhra Pradesh & 360.5 in Tamil Nadu)
  • Deadline: December 2024
  • Owner: National Highways Authority of India (NHAI)
  • Project Model: Hybrid Annuity Mode (HAM)


The expressway is designed with a 70m ROW (right of way) and speed limit of 100 kmph. It feature 10 major bridges, 33 minor bridges, 2 Rail Overbridges, 252 culverts, 79 vehicular underpasses, 8 interchanges, and animal crossings to minimize human-animal interaction.

Route Map

The expressway will pass through Chittoor district in Andhra Pradesh and Thiruvallur district of Tamil Nadu to provide direct connectivity to Kamarajar (Ennore) and Kattupalli ports.

The expressway crosses river Ponnai at km 14.5, Nagari River at km 65.70 and Aranai river at 2 locations: km 100.20 and 109.00.

The following not-so-pretty map from the government’s environment clearance site displays its route in red color. An official PDF route map will be added here when available. The Bangalore – Chennai Expressway is visible in green and the Chennai Peripheral Ring Road in Purple.

Tenders & Contractors

Chittoor – Thatchur Expressway has been divided into 4 civil packages with a 4 year deadline.

Package & ChainageContractor (Value)
Package 1 (43.80 m): km 0.000 to 43.800KCC Buildcon Pvt. Ltd. (Rs. 1324 crore) (awarded Aug 31, 2021)
Package 2 (17.58 km): km 43.800 (Kumarajapet) to km 61.380 (Veera Kaveri Raja Puram)EKK Infrastructure Ltd. (awarded Aug 28, 2021)
Package 3 (34.66 km): km 61.380 to km 96.040KNR Constructions Ltd. (954.29 crore) (awarded Sept 14, 2021)
Package 4 (20.060 km): km 96.040 to km 116.100IRB Infrastructure Developers (awarded Sept 24, 2021)

Page last updated: December 27, 2023. Have a question or spot an error? Let me know here.