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{{Use Indian English|date=August 2013}}
{{Use dmy dates|date=January 2020}}
[[File:Highway Network of Tamil Nadu.png|thumb|right|Map indicating Highways network of Tamil Nadu]]
In [[Tamil Nadu]], the Highways & Minor Ports Department (HMPD) is primarily responsible for construction and maintenance of roads including [[List of National Highways in India#Tamil Nadu|national highways]], state highways and major district roads. HMPD was established as Highways Department (HD) in April 1946 and subsequently renamed on 30 October 2008.<ref>{{cite web|url= http://www.tn.gov.in/gorders/par/par_e_202_2008.pdf|title= Highways Department renamed as Highways and Minor Ports Department|publisher= Government of Tamil Nadu|access-date=15 July 2010}}</ref> It operates through seven wings namely National Highways Wing, Construction & Maintenance Wing, NABARD and Rural Roads Wing, Projects Wing, Metro Wing, Tamil Nadu Road Sector Project Wing, Investigation and Designs Wing geographically spread across the state in 32 districts with about 120 divisions and 450 subdivisions.<ref>{{cite web|url= http://www.tnhighways.org/org.htm|title= Wings of Highways Department|publisher=Highways Department, Government of Tamil Nadu|access-date=15 July 2010}}</ref>

==Road Network==
As on 30 June 2018, Tamil Nadu's road network has a total road length of {{convert|199040|km|abbr=on}}.<ref>{{cite web|url= http://www.investingintamilnadu.com/tamilnadu/doc/policy/Highways_and_Minor_Ports.pdf|title= Details of Government Roads in Tamil Nadu|publisher=Tamil Nadu Industrial Guidance & Export Promotion Bureau, Industries Department, Government of Tamil Nadu|access-date=15 July 2010}}</ref> Tamil Nadu has about {{convert|17154|km|abbr=on}} of highways which is designated as ''[[National Highway (India)|National Highways]]'' and ''State Highways'' on the basis of traffic intensity and connectivity. The various types of roads and their lengths are given below:

{| class="wikitable sortable"
|+'''Tamil Nadu Road Network''' ''(As on 30 June 2018)''<ref>{{cite web|url= http://www.tnhighways.gov.in/pdf/D21_H&MP_PN_2017_18_English.pdf|title= Lanewise Details of Government Roads in Tamil Nadu|publisher= Performance Budget (2015–16), Highways and Minor Ports Department, Government of Tamil Nadu|access-date=30 September 2016}}</ref>
!Sl. No!!Category wise
!Single lane!!Intermediate lane
!Double lane!!Multi lane
!Total
|-
|1||[[National Highway (India)|National highways]]||align="center"|{{convert|12|km|abbr=on}}||align="center"|{{convert|26|km|abbr=on}}||align="center"|{{convert|3061|km|abbr=on}}||align="center"|{{convert|2225|km|abbr=on}}||align="center"|{{convert|5324|km|abbr=on}}
|-
|2||[[State Highway (India)|State highways]]||align="center"|{{convert|39|km|abbr=on}}||align="center"|{{convert|291|km|abbr=on}}||align="center"|{{convert|9416|km|abbr=on}}||align="center"|{{convert|2084|km|abbr=on}}||align="center"|{{convert|11830|km|abbr=on}}
|-
|3||Total||align="center"|{{convert|51|km|abbr=on}}||align="center"|{{convert|317|km|abbr=on}}||align="center"|{{convert|12477|km|abbr=on}}|| align="center" |{{convert|4309|km|abbr=on}}|| align="center" |{{convert|17154|km|abbr=on}}
|-
|4||Percent||align="center"|<1%||align="center"|1.8%||align="center"|72.7%||align="center"|25.1%||align="center"|100%
|}

===National Highways===
Road stretches which have heavy traffic intensity of more than 30,000 Passenger Car Units (PCUs) connecting different [[List of state and union territory capitals in India|state capitals]], major [[ports in India|ports]], large industrial areas and tourist centers are designated National Highway by Government of India.<ref>{{cite web|url= http://www.tn.gov.in/policynotes/archives/policy2003-04/highways2003-04-1.htm|title= Norms for Classification of Government Roads, Policy Note on Roads, Bridges and Shipping – 2003–2004|publisher=Government of Tamil Nadu|access-date=15 July 2010}}</ref> In Tamil Nadu, ''National Highways Wing'' of Highways & Minor Ports Department was established in the year 1971 to look after the works of improving, maintaining and renewing of National Highways laid down by National Highways Authority of India [[National Highways Authority of India|(NHAI)]].<ref>{{cite web|url= http://www.tnhighways.org/nh.htm|title= National Highways wing|publisher=Tamil Nadu Highways Department|access-date=15 July 2010}}</ref> National Highways wing exercises central government funds from [[Ministry of Road Transport and Highways]] for improvement works. Out of 25 National Highways in Tamil Nadu, 12 highways completely lie within the state. National Highways plying through Tamil Nadu are listed below in the table:<ref>{{cite web|url= http://morth.nic.in/index3.asp?langid=2&sublink2id=359|title= National Highways in Tamil Nadu|publisher=Ministry of Road Transport and Highways, Government of India|access-date=15 July 2010}}</ref>

=== State highways ===
{{Main|List of state highways in Tamil Nadu}}
Road stretches with heavy traffic intensity of more than 10,000 PCUs but less than 30,000 PCUs which connects [[district]] headquarters, important towns and the [[National Highway (India)|National Highways]] in the State and neighboring States are declared as State Highways. Construction & Maintenance wing of Highways Department looks after Construction, Maintenance of all the State Highways (SH), Major District Roads (MDR), Other District Roads (ODR). Tamil Nadu State Highways Network has 7 circles namely [[Chennai]], [[Coimbatore]], [[Madurai]], [[Tiruchirappalli]], [[Salem, Tamil Nadu|Salem]], [[Tirunelveli]] and [[Villupuram]].<ref>{{Cite web|url= http://www.tnhighways.org/cir.htm|archive-url= https://web.archive.org/web/20021224184615/http://www.tnhighways.org/cir.htm|url-status= dead|archive-date= 24 December 2002|title= Highways Circle of Highways Department, Tamil Nadu|publisher= Highways Department, Government of Tamil Nadu|access-date= 15 July 2010}}</ref>

===Major District Roads===
Roads with traffic density less than 10,000 PCUs but more than 5,000 PCUs are designated as Major District Roads (MDR). Major District Roads provide linkage between production and marketing centers within a district. It also provides connectivity for [[district]] and [[taluk]] headquarters with state highways and national highways. Construction and Maintenance wing of Highways Department executes construction and maintenance of MDRs along with State Highways. These roads have a minimum width of {{convert|15|m}}.

===Other District Roads (ODR)===
Roads with traffic density less than 5,000 PCUs are categorized as Other District Roads (ODR). ODRs provides road connectivity for major rural production hubs, [[Block (country subdivision)#India|block]] headquarters and taluk headquarters. Similar to SH and MDRs, Construction and Maintenance wing of Highways Department executes ODR related works.

===Rural & Sugarcane Roads===
[[National Bank for Agriculture and Rural Development|NABARD]] and Rural Roads Wing of Highways and Minor Ports Department carry out construction and maintenance of rural roads along with [[Pradhan Mantri Gram Sadak Yojana]]. NABARD and state government shares the funds required for the development of rural roads. In 2010, NABARD sanctioned {{INRconvert|816|c}} for augmentation of 508 rural roads in 30 districts, upgrading 44 district roads and 39 major district roads in 18 districts and construction of 121 bridges in 31 districts of the state.<ref>{{Cite news|url= http://www.thehindubusinessline.com/2010/06/26/stories/2010062650571700.htm|title= Nabard funds for TN projects|work=[[The Hindu]]|date=26 June 2010|access-date=15 July 2010}}</ref>

===Other Roads===
====East Coast Road====
{{Main|East Coast Road}}
The [[East Coast Road]] was the first project implemented by Tamil Nadu Road Development Company (TNRDC) in the year 2002. ECR Road runs from Kudumiyandithoppu till outskirts of [[Pondicherry (city)|Pondicherry]] for a total length of {{convert|113|km|abbr=on}}. Recently Tamil Nadu Government has upgraded the ECR road till [[Mahabalipuram]] to four lanes at a cost of {{INRconvert|672|c}}.<ref>{{Cite news| url= http://articles.timesofindia.indiatimes.com/2009-03-11/chennai/28044581_1_laning-tnrdc-medians| archive-url= https://web.archive.org/web/20121103085812/http://articles.timesofindia.indiatimes.com/2009-03-11/chennai/28044581_1_laning-tnrdc-medians| url-status= dead| archive-date= 3 November 2012|title= ECR to be made four lanes|date=11 March 2009|access-date=15 July 2010|first1=Jayaraj| work= [[The Times of India]]|last1=Sivan}}</ref>

====Coimbatore bypass====
[[Coimbatore Bypass]] is a series of [[Bypass (road)|bypasses]] connecting the various [[National Highway (India)|National Highways]] and [[Highways of Tamil Nadu|State Highways]] passing through and originating in [[Coimbatore]]. The first section of the bypass was a {{convert|28|km|mi||adj=on}} two-laned road with paved shoulders built by [[Larsen & Toubro]] (L&T) from Neelambur to [[Madukkarai]] on [[National Highway 544 (India)|National Highway 544]] (formerly National Highway 47) which intersects Trichy Road at Chintamani Pudur near Irugur and Eachanari on Pollachi Road.<ref name="pullout">{{cite news|url= http://www.financialexpress.com/old/fe/daily/19991020/fco20046.html |title= L&T may pull out of Coimbatore bypass project |first1= Kavita |last1= Venkataraman |first2= TMA |last2= Raman |date= 20 October 1999 |work= Financial Express |access-date= 6 February 2012}}</ref> It was the first road privatisation project to be implemented on a [[build-operate-transfer]] model in South India.<ref>{{cite web |url= http://www.lntidpl.com/coimbatore-by-pass.aspx |title= Coimbatore By-pass (Tamil Nadu) |publisher= L&T IDPL |access-date= 1 February 2012}}</ref><ref>{{cite web |url= http://www.lntecc.com/homepage/resources/brochures/Infrastructure/RoadsRunways/CoimbatoreBypassRoad.pdf |format= PDF |title= Coimbatore Bypass: First road Privatization Project |publisher= L&T ECC |access-date= 6 February 2012}}</ref> The National Highways Authority of India is conducting studies for a bypass along the [[Mettupalayam, Coimbatore|Mettupalayam]]–[[Sulur]] [[National Highway 67 (India)|National Highways 81 and 181]] (formerly National Highway 67). The proposed length of this road is {{convert|53.95|km|mi}}, and is expected to cost {{INRconvert|6.01|b}} to build.<ref>{{cite news |url= http://www.hindu.com/2010/11/14/stories/2010111456690700.htm |archive-url= https://web.archive.org/web/20110721200815/http://www.hindu.com/2010/11/14/stories/2010111456690700.htm |url-status= dead |archive-date= 21 July 2011 |title= Coimbatore bypass road works to begin next year |date= 14 November 2010 |access-date=1 February 2012 |work= [[The Hindu]] |location= Chennai}}</ref> In 2010, an announcement was made in the State Budget to build a Western Ring Road at a cost of {{INR}} 2.84 billion for 26 km. The proposed road would have been from Madukarai near ACC Cement industry, starting on Palakkad Road connecting Mettupalayam Road via Perur Road, Marudamalai Road and Thadagam Road.<ref>{{cite news|url=http://www.hindu.com/2010/03/20/stories/2010032054840600.htm|archive-url=https://web.archive.org/web/20100504061619/http://www.hindu.com/2010/03/20/stories/2010032054840600.htm|url-status=dead|archive-date=4 May 2010|title=Long term benefits for Coimbatore|date=20 March 2010|work=[[The Hindu]]|access-date=9 February 2012|location=Coimbatore}}</ref>

====IT Expressway====
{{Main|Rajiv Gandhi Salai}}
Road Stretch from [[Madhya Kailash]] in [[Adyar (Tamil Nadu)|Adyar]] to [[Mahabalipuram]] in [[Kanchipuram district]] which in turn connects with the East Coast Road is called Rajiv Gandhi Salai or IT Expressway. TNRDC developed this road stretch in two phases with widening of [[Madhya Kailash]] to [[Siruseri]] road stretch to six lanes in first phase and widening of Siruseri to Mamallapuram of road stretch I second phase.<ref>{{Cite news|url= http://articles.timesofindia.indiatimes.com/2008-04-29/chennai/27776205_1_bad-roads-km-chennai-outer-ring-road|archive-url= https://web.archive.org/web/20121103085819/http://articles.timesofindia.indiatimes.com/2008-04-29/chennai/27776205_1_bad-roads-km-chennai-outer-ring-road|url-status= dead|archive-date= 3 November 2012|title= Expansion of IT Expressway|date=29 April 2008|work= [[The Times of India]]|access-date=15 July 2010}}</ref>

==== Ennore-Manali Road Improvement Project (EMRIP) ====
[[Ennore]]–[[Manali, Tamil Nadu|Manali]] Road Improvement Project was developed by a special purpose vehicle formed by [[National Highways Authority of India]] (NHAI), [[Chennai Port Trust|Chennai Port Trust (CPT)]], [[Ennore Port Limited]] (EPL) and [[Government of Tamil Nadu|Tamil Nadu Government]] (GoTN) at a cost of Rs 600 crore. The project was announced by the State Government in 1998 to cover industrial hotspots of north Chennai such as Manali Oil Refinery Road, [[Tiruvottiyur]]–[[Ponneri]]-Panchetti (TPP) Road, Ennore Expressway and northern portion of the Inner Ring Road from [[Madhavaram]] to [[Manali, Chennai|Manali]].<ref>{{Cite news|url=http://www.thehindubusinessline.com/2010/02/09/stories/2010020952111700.htm|title=Chennai's Ennore-Manali road project|newspaper=[[The Hindu]]|date=9 February 2010|access-date=15 July 2010}}</ref><ref>{{Cite news|url= http://economictimes.indiatimes.com/news/news-by-industry/transportation/shipping-/-transport/EMRIP-EFLCP-likely-to-be-completed-in-two-years-Vasan/articleshow/5548566.cms|title= Ennore-Manali Road Improvement Project|work=[[The Economic Times]]|date=8 February 2010|access-date=15 July 2010}}</ref>

====Chennai Port – Maduravoyal Expressway====
{{Main| Chennai Port – Maduravoyal Expressway}}
The {{convert|19|km|abbr=on}} long Chennai Port – [[Maduravoyal]] Expressway is being developed Chennai Port Trust and Government of Tamil Nadu on 50:50 cost sharing basis. The {{INRconvert|1655|c}} Elevated Expressway project was awarded to [[Hyderabad, India|Hyderabad]] based Soma Enterprises.

==== Outer Ring Road Project ====
{{Main| Outer Ring Road, Chennai}}
The 62-km long Outer Ring Road with six lanes from [[Vandalur]] to [[Minjur]] via Nemellichery was awarded to [[GMR Group|GMR]] consortium by [[Chennai Metropolitan Development Authority]] to implement the project on a Design, Build, Finance, Operate and Transfer (DBFOT) basis. The project is proposed to be developed at a cost of {{INRconvert|1000|c}} in two phases. In the first phase, the {{convert|30|km|abbr=on}} long stretch of road from Vandalur in NH-45 to Nemellichery in NH-205 via Nazrathpet in NH4 is to be developed. The {{convert|30|km|abbr=on}} long stretch of road between Thiruninravur Nemellichery to Thiruvottiyur-Ponneri-Panchetti in Minjur is under construction. It acts as a linkage between Grand Southern Trunk Road ([[National Highway 45 (India)|NH-45]]), [[Bangalore]]–[[Chennai]] Road ([[National Highway 4 (India, old numbering)|NH 4]]) and [[Tirupati (city)|Tirupathi]]–[[Chennai]] Road.<ref>{{Cite news|url= http://articles.timesofindia.indiatimes.com/2009-09-09/chennai/28107151_1_outer-ring-road-nemilichery-land-acquisition|archive-url= https://web.archive.org/web/20121103085824/http://articles.timesofindia.indiatimes.com/2009-09-09/chennai/28107151_1_outer-ring-road-nemilichery-land-acquisition|url-status= dead|archive-date= 3 November 2012|title= Rs 1,000-cr Outer Ring Road project set to take off|date=9 September 2009|work= [[The Times of India]]|access-date=15 July 2010}}</ref>

==== Chennai Peripheral Ring Road ====

The proposed Chennai Peripheral Ring Road
starts at Ennore port travels through the proposed
Northern Port Access Road and connects
Mamallapuram near Poonjeri junction of East Coast
Road (ECR). The Government sanctioned
Rs. 10 Crore for the preparation of Detailed Project
Report (DPR) for this work and the same has been
completed.

==References==
{{Reflist}}

== External links ==
* [http://www.tnrsp.com/bkgrnd-docu-gis.pdf Government of Tamil Nadu – Highways Department]
* [http://www.tnhighways.org/right2info/chap-02.pdf Tamil Nadu Highways – Right to information (Chapter-02)]
* [http://www.tn.gov.in/spc/annualplan/ap2008_09/2_19_ROADS.pdf Government of Tamil Nadu – Annual Road Plan 2008–09]

{{Indian Highways Network}}
{{Tamil Nadu Highway Network}}

{{DEFAULTSORT:Road Network in Tamil Nadu}}
[[Category:State highways in Tamil Nadu| ]]
[[Category:Roads in Tamil Nadu|State Highways]]
[[Category:Tamil Nadu-related lists|State Highways]]

[[ta:தமிழ்நாடு மாநில நெடுஞ்சாலைகள்]]

Road network in Tamil Nadu - Revision history

imported>Vijethnbharadwaj: Added link