East Coast Road

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East Coast Road
ECR
East Coast Road highlighted in black
Route information
Maintained by Highways Department, Tamil Nadu, National Highways Authority of India (NHAI), Tamil Nadu Road Development Company (TNRDC)
Length	777 km (483 mi)
Major junctions
From	Chennai
To	Kanyakumari
Location
Country	India
State	Tamil Nadu
Districts	Chennai, Chengalpattu, Vilupuram, Pondicherry, Cuddalore, Karaikal, Nagapattinam, Tiruvarur, Thanjavur, Pudukottai, Ramanathapuram, Thoothukudi, Tirunelveli, Kanyakumari
Major cities	Chennai, Puducherry, Cuddalore, Chidambaram, Karaikal, Nagapattinam, Thiruthuraipoondi, Muthupet, Adirampattinam,Peravurani,Ramanathapuram, Tuticorin, Tiruchendur, Uvari, Kanyakumari.
Highway system
Roads in India Expressways National State Asian State Highways in Tamil Nadu

East Coast Road (ECR), combination of SH-49, NH-332A, NH-32, officially known as Mutthamizh Arignar Kalaignar Road without public voting, is a two-lane highway (now being partially widened to four lanes from Chennai to Mamallapuram) in Tamil Nadu, India, built along the Bay of Bengal coast . It connects Tamil Nadu's state capital Chennai with Kanyakumari via Puducherry, Cuddalore, Chidambaram, Sirkali, Thirukkadaiyur, Tharangambadi, Karaikal, Nagore, Nagapattinam, Thiruthuraipoondi, Muthupet, Adirampattinam, Manora,Peravurani,Manamelkudi, Mimisal, Ramanathapuram, Rameswaram,Thoothukudi, Tiruchendur, Uvari, Kudankulam.^[1] The total length of the road is about 777 km between Chennai and Kanyakumari.

ECR once existed from Chennai to Puducherry, later it has been extended to Cuddalore and then to Nagapattinam and then Tuticorin via Ramanathapuram and finally up to Kanyakumari.

The highway is a state highway maintained by the Government of Tamil Nadu under the Department of Highways and Minor Ports and Tamil Nadu Road Infrastructure Development Corporation (TNRIDC). It was a two-lane highway, and has plans to widen into four-lane divided highway till Kanyakumari. It is the most preferred alternate route for southern districts of Tamil Nadu.

The Chennai neighbourhoods on ECR are Thiruvanmiyur, Kottivakkam, Palavakkam, Neelankarai, Injambakkam, Panaiyur, Uthandi, Muttukadu, Covelong and Vilambur.