National Highways in Tamil Nadu
Written and checked byRamanathan Virli· Roads & Infrastructure
79 national highways pass through Tamil Nadu, 21 of them primary routes. Each entry below links to that highway's full route, start and end points, and the states it crosses.
79
Highways
21
Primary NHs
22,383
Total route km
NH 16Primary
Chennai → Kolkata
NH 32Primary
Chennai → Thoothukudi
NH 36Primary
Vikravandi → Manamadurai
NH 38Primary
Vellore → Thoothukudi
NH 42Primary
Joladarasi → Krishnagiri
NH 44Primary
Srinagar → Kanyakumari
NH 48Primary
Delhi → Chennai
NH 66Primary
Navi Mumbai → Kanyakumari
NH 75Primary
Bantval → Katpadi
NH 77Primary
Krishnagiri → Tindivanam
NH 78Primary
Naraharipeta → Anchetty
NH 79Primary
Mettur Dam → Ulundurpettai
NH 80Primary
Sayalgudi → Thiruvarur
NH 81Primary
Coimbatore → Chidambaram
NH 82Primary
Parthibanur → Tiruchendur
NH 83Primary
Coimbatore → Nagapattinam
NH 84Primary
Avinashi → Kumily
NH 85Primary
Kochi → Thondi
NH 86Primary
Mimisal → Rasipuram
NH 87Primary
Manamadurai → Dhanushkodi
NH 88Primary
Kottayam → Nagercoil
NH 132
Puducherry → Kanchipuram
NH 132B
Sadras → Kanchipuram
NH 136
Thanjavur → Perambalur
NH 138
Tuticorin Port → Tirunelveli
NH 175
Kunigal → Mettur Dam
NH 175K
Kollegala → Talamalai
NH 177
Tiruvannamalai → Dharmapuri
NH 177A
Tiruvannamalai → Panruti Cuddalore
NH 177B
Chengam → Melmaruvathur
NH 177C
Tindivanam → Thiruttani
NH 178
Anchetty → Hosur
NH 179A
Salem → Vaniyambadi
NH 179B
Tindivadnam → Chennai
NH 179D
Villupuram → Arcot
NH 180
Sayalgudi → Watrap
NH 181
Coimbatore → Gundulpet
NH 182
Thiruchendur → Anjugramam
NH 182A
Uvari → Nanguneri Kalakkad
NH 183
Dindigul → Kollam
NH 184
Tiruppur → Sathyamangalam
NH 186
Thuvarankurichi → Lalgudi
NH 280
Sayalgudi → Sivakasi
NH 283
NH 332
Puducherry → Viluppuram
NH 332A
Puducherry → Chennai
NH 336
Pudukkottai → Tiruchirappalli
NH 338
Melur → Karaikkudi
NH 377
Singarapettai → Bargur
NH 380
Kumbakonam → Kodiyakarai
NH 380A
Sirkali → Thiruthuraipoondi
NH 381
NH544 in Avinashi → Avinashipalaiym
NH 381A
Vellakoil → Sankakiri
NH 381B
Musiri → Mettupalayam
NH 382
Thamirabarani → Vijayapathi
NH 382A
Tirunelveli → Kulathur
NH 383
Dindigul ,Kosavapatti → Thalakavoor
NH 383A
NH 384
Palladam → Palani
NH 386
Attur → Nochiyam
NH 532
Cuddalore → Chinasalem
NH 536
Tirumayam → Ramanathapuram
NH 538
Melur → Ramanathapuram
NH 544
Salem → Ernakulum
NH 544H
Thoppur → Erode
NH 585
Munnar → Magic Valley
NH 648
Nelamangla → Hosur
NH 716
Chennai → Renigunta
NH 716A
Puttur → Janappachataram
NH 716B
Thiruttani → Chittoor
NH 732
Karaikal → Thayippakulam
NH 744
Tirumangalum → NH66 Chinnakada
NH 744A
Alampatti ,Vadagarai → Vadipatti
NH 785
Pandian Hotel Junction in Madurai → Tovarankurichchi
NH 786
Karur → Manapparai
NH 932
Nagore → Kumbakonam|Tamil Nadu
NH 944
Kavalkinaru → Nagercoil
NH 948
Bengaluru → Coimbatore
NH 948A
Dobaspete → Sarjapur
Frequently asked questions
How many national highways pass through Tamil Nadu?
79 national highways run through Tamil Nadu, of which 21 are primary (single- or double-digit) national highways and the rest are branch or spur routes.
Which is the longest national highway in Tamil Nadu?
Among the highways passing through Tamil Nadu, NH 44 is the longest at 3745.0 km, running from Srinagar to Kanyakumari. Note that this is the highway's full length across all states it passes through, not only the portion inside Tamil Nadu.
What is the speed limit on national highways in Tamil Nadu?
On national highways the default limit notified by the Ministry of Road Transport & Highways is 100 km/h for cars on four-lane and wider divided carriageways, 80 km/h on undivided highways, and 80 km/h for light goods vehicles. State authorities and NHAI can notify lower limits on specific stretches, and the signposted limit always overrides the default.