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Government of Tamil Nadu has the unique distinction of creating a separate Highways Department as early as in 1946 exclusively to attend the roads and bridges in the State. Tamil Nadu was the forerunner in bringing out standard specifications for the roads and bridges in the year 1954. The objectives of the department are to maintain and improve the roads under the control of the Government and to provide all weather road connectivity to rural habitations. A new post of Secretary to Government, Highways Department came into being in 1996. Minor Ports were later brought under the purview of this Department. Subsequently, this Department was renamed as Highways and Minor Ports Department.


The vision of the Highways Department is to increase the capacity, connectivity, efficiency and safety of the Highways System so as to enable balanced socio-economic development of all sections of the people and all regions of the state.


Availability of adequate and quality infrastructure is a prerequisite for rapid industrial development, which in turn leads to creation of gainful employment for the people. Increasing accessibility and connectivity within and among rural areas is an important prerequisite for rural development. Tamil Nadu is served by an extensive road network in terms of its spread and quality, providing links between urban centers, agricultural market-places and rural habitations in the countryside.

Highways Department serves the road users of Tamil Nadu by providing High Quality, Cost Effective, Environment-Friendly Road Network (by applying Innovation, Best Practices, appropriate Technology and responsible Management of Internal and External Resources). Also, the roads are reliable, safe and contribute to Sustainable Economic Development and Social Well-being of the State


Highways Department maintains 70,556 Km of roads in Tamil Nadu. The details of the roads are given in the following tables:

Year Total Length in KMs
1951 32,300
2016 62,460
2017 62,468
2018 63,650
2019 66,039
2020 66,039
2021 70,556

Details of Road Network
Classification Length in KMs
State NH Wing 1,511
NHAI 5,095
Total 6,606
State Highways 11,279
Major District Roads 11,625
Other District Roads 41,052
Total 63,956
Overall Total 70,562

Lane - Wise Length details
Sl.No. Category wise Single Lane Intermediate Lane Double Lane Multi Lane Total
1. National Highways     1892 4714 6606
2. State Highways 33 207 8022 3013 11275
3. Major District Roads 315 6241 4669 398 11623
4. Other District Roads 33069 6567 1328 88 41052
Total 33417 13015 15911 8213 70556


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Last Updated: 27-03-2023
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