# List of major district roads in Tamil Nadu

In Tamil Nadu, there is a separate Highways Department (HD) which was established in April 1946 and renamed as Highways & Minor Ports Department (HMPD) on 30 October 2008. HMPD of Tamil Nadu is primarily responsible for construction and maintenance of roads including national highways, state highways and major district roads in Tamil Nadu.
Roads with traffic density less than 10,000 PCUs but more than 5,000 PCUs are designated as major district roads (MDR). MDRs provide linkage between production and marketing centres within a district. They also provide connections between district and taluk headquarters with the state highways and national highways. Construction and maintenance is carryout by the Highways Department for MDR along with state highways and ODR. These roads have a minimum width of 15 meters.

## Lane wise distribution

Details of lane wise distribution of MDR roads in Tamil Nadu as of March 2013:
| S. no | Division | Single lane (in km) | Intermediate lane (in km) | Double lane (in km) | Multi lane (in km) | Total (in km) |
| 1 | Chennai City Roads | | | 31.73 | 10.01 | 41.74 |
| 2 | Tiruvallur | 69.50 | 96.45 | 119.02 | 7.00 | 291.97 |
| 3 | Chengalpattu | 129.61 | 89.25 | 152.83 | 5.30 | 376.98 |
| 4 | Vellore | 97.80 | 55.60 | 60.65 | 12.65 | 226.70 |
| 5 | Vaniyambadi | 8.80 | 20.00 | 29.96 | 1.60 | 60.36 |
| 6 | Thiruvannamalai | 139.00 | 191.30 | 110.95 | | 441.25 |
| 7 | Villupuram | 66.15 | 102.32 | 18.52 | | 186.99 |
| 8 | Kallakurichi | 189.35 | 52.50 | 47.30 | | 289.15 |
| 9 | Cuddalore | 162.72 | 158.61 | 73.78 | 0.40 | 395.50 |
| 10 | Ariyalur | 93.60 | 85.71 | 42.19 | 1.40 | 222.90 |
| 11 | Trichy | 165.31 | 112.65 | 55.52 | 2.50 | 335.98 |
| 12 | Pudukottai | 97.59 | 311.97 | 27.87 | | 437.43 |
| 13 | Thanjavur | 182.20 | 214.18 | 47.73 | | 444.10 |
| 14 | Nagapattinam | 81.01 | 201.71 | 14.85 | 1.20 | 298.76 |
| 15 | Tiruvarur | 124.00 | 92.95 | 13.40 | | 230.35 |
| 16 | Salem | 212.57 | 152.67 | 238.94 | 16.73 | 620.90 |
| 17 | Namakkal | 10.50 | 191.64 | 69.94 | 1.95 | 274.04 |
| 18 | Krishnagiri | 28.31 | 153.09 | 109.20 | 2.76 | 293.36 |
| 19 | Dharmapuri | 73.70 | 117.03 | 87.91 | | 278.64 |
| 20 | Tiruppur | 62.00 | 87.88 | 79.61 | 9.20 | 238.68 |
| 21 | Dharapuram | 91.12 | 130.79 | 47.45 | | 269.36 |
| 22 | Erode | 62.00 | 86.82 | 103.13 | 3.06 | 255.00 |
| 23 | Karur | 113.72 | 218.68 | 75.20 | | 407.60 |
| 24 | Coimbatore | 29.40 | 105.25 | 155.00 | 26.17 | 315.82 |
| 25 | Pollachi | 72.14 | 83.50 | 27.95 | 0.80 | 184.39 |
| 26 | Gobi | 31.30 | 98.20 | 75.47 | 2.24 | 207.20 |
| 27 | Ooty | 27.37 | 148.80 | 4.20 | | 180.37 |
| 28 | Madurai | 176.30 | 68.00 | 306.25 | 1.60 | 552.14 |
| 29 | Theni | 6.18 | 90.85 | 129.03 | | 226.05 |
| 30 | Dindigul | 284.93 | 328.29 | 144.50 | 0.97 | 758.69 |
| 31 | Sivagangai | 154.86 | 124.16 | 40.67 | 0.80 | 320.49 |
| 32 | Ramanathapuram | 144.98 | 141.36 | 40.80 | | 327.14 |
| 33 | Tirunelveli | 107.82 | 60.44 | 54.21 | 0.00 | 222.47 |
| 34 | Tenkasi | 56.98 | 68.90 | 38.80 | | 164.67 |
| 35 | Thoothukudi | 95.62 | 100.39 | 95.48 | 2.28 | 293.77 |
| 36 | Virudhunagar | 202.53 | 109.21 | 20.91 | | 332.64 |
| 37 | Nagercoil | 55.38 | 76.20 | 104.62 | | 236.20 |
| 38 | Cheyyar | | | | | |
| 39 | Perambalur | | | | | |
| | Grand Total | 3706.34 | 4527.33 | 2895.52 | 110.61 | 11239.79 |

## List of MDRs

List of Major district roads in Tamil Nadu (as of March 2019).

### MDR 1 to MDR 100

| Road number | OSM relation | Name of road | Division | Length (in km) | Remarks |
| MDR | OSM | Soolaimeni - Thervoy Kandigai Road | Tiruvallur | 4.80 | |
| MDR | OSM | Pattukkottai Bypass Road | Thanjavur | 7.40 | |
| MDR | OSM | Velankanni - Thiruthuraipoondi Road (Abandoned Section) | Nagapattinam | 1.057 | KM 16/23 to KM 16/68, KM 22/015 to KM 22/399, KM 22/432 to KM 22/655. |
| MDR | OSM | Rasipuram Bypass Road | Namakkal | 6.00 | KM 2/8 to KM 8/8 |
| MDR1 | OSM | Abulkalam Azad Road | Tirunelveli | 1.80 | |
| MDR5 | OSM | Aduthurai - South Thiruneelakudi Road | Thanjavur | 2.80 | KM 10/4 to KM 13/2 |
| MDR6 | OSM | Ayikudi - Nainaragaram Road | Tenkasi | 3.20 | |
| MDR7 | OSM | Akkur Railway Feeder Road | Nagapattinam | 0.80 | |
| MDR9 | OSM | Alagesapuram Road | Tuticorin | 1.32 | |
| MDR10 | OSM | Alampatti - Sedapatti Road | Madurai | 18.40 | |
| MDR11 | OSM | Alapakkam Railway Feeder Road | Cuddalore | 0.524 | |
| MDR12 | OSM | Allithurai - Thogaimalai Road | Trichy, Karur | 28.20 | KM 5/4 to KM 33/6, road till KM 5/4 is part of another MDR |
| MDR13 | OSM | Ambarampalayam - Anaimalai - Sethumadai Road | Pollachi | 16.00 | MDR till KM 16/0, from there unclassified road |
| MDR14 | | Ambasamudram - Alangulam Road | | 20.40 | Upgraded as SH40B |
| MDR16 | OSM | Ambasamudram Travellers Bungalow Road | Tirunelveli | 1.00 | |
| MDR18 | OSM | Ambur - Sathgur Road | Vaniyambadi | 1.80 | Ambur town limit |
| MDR21 | OSM | Ammapettai - Vaduvur Road | Thanjavur, Tiruvarur | 13.70 | |
| MDR22 | OSM | Anaimalai - Poolankinar Road | Pollachi, Dharapuram | 32.40 | |
| MDR23 | OSM | Anaimalai Loop Road | Pollachi | 7.80 | |
| MDR27 | OSM | Anjugramam Road | Nagercoil | 10.30 | |
| MDR28 | OSM | Anthiyur - Ammapettai Road | Erode | 17.40 | |
| MDR29 | OSM | Anthiyur - Athani Road | Erode | 9.20 | |
| MDR30 | OSM | Arachalur - Sivagiri - Thamaraipalayam Road | Erode | 20.60 | |
| MDR32 | OSM | Tiruvallur - Arakkonam Road | Tiruvallur, Vellore | 20.80 | |
| MDR34 | OSM | Arasalar New Bridge Approach Road | Thanjavur | 0.427 | |
| MDR35 | OSM | Aravakurichy - Chinnadharapuram Road | Karur | 10.03 | |
| MDR37 | OSM | Aravakurichy - Pungampadi Road | Karur | 6.60 | MDR till 6/6, from Dindigul district border another MDR continues with origin from 6/4, overlapping between divisions. |
| MDR38 | | Arisipallayam - Cherring Cross Road | | 1.20 | KM 2/4 to KM 3/6, upgraded as SH218 |
| MDR40 | OSM | Arni - Devikapuram Road | Cheyyar | 21.20 | |
| MDR41 | OSM | Arni - Ettivadi Road | Cheyyar, Tiruvannamalai | 17.70 | |
| MDR42 | OSM | Arni - Kalambur Road | Tiruvannamalai | 0.80 | Extension to MDR41 (KM 9/6 to KM 10/4) |
| MDR43 | OSM | Arni - Vandavasi Road | Cheyyar | 39.20 | |
| MDR44 | OSM | Arungunam Road | Cuddalore | 4.40 | |
| MDR45 | | Athiyuthu-Surandai road | | 12.00 | Upgraded as SH39B |
| MDR46 | OSM | Attaiyampatti - Masakkalipatti Road | Salem, Namakkal | 12.80 | |
| MDR48 | OSM | Avaniapuram - Thirupparankundram Road | Madurai | 4.80 | |
| MDR52 | OSM | Ayyampettai Railway Approach Road | Thanjavur | 1.60 | |
| MDR53 | | Bagalur - Berigai Road | | 12.00 | Upgraded as SH17C |
| MDR54 | OSM | Balamore Road | Nagercoil | 20.40 | KM 17/2 to KM 37/6 |
| MDR55 | OSM | Bauxite Mines Road | Salem | 2.00 | |
| MDR57 | OSM | Bhavani - Kavandapady Road | Gopichettipalayam | 13.60 | |
| MDR58 | OSM | Bodi - Kurangani Road | Theni | 10.00 | KM 6/0 to KM 16/0, till KM 6/0 it is NH |
| MDR59 | OSM | Brahmin Burning Ghat - Vijayapuram Regulator Road | Tiruvarur | 0.60 | |
| MDR62 | OSM | Thindal - Periyasemur Link Road via Villarasampatti Bypass | Erode | 8.40 | |
| MDR65 | OSM | Chennai - Kovalam - Mamallapuram Road | Chengalpattu | 5.60 | KM 35/2 - KM 40/0 and KM 57/6 - KM 58/4 |
| MDR66 | OSM | Chennai - Ponnerikarai - Kanchipuram Road | Chengalpattu | 4.50 | KM 70/4 - KM 74/9 |
| MDR70 | OSM | Chennimalai - Arachalur - Kodumudi Road | Erode | 13.60 | |
| MDR71 | OSM | Chennimalai - Uthukuli Road | Erode, Tiruppur | 18.20 | |
| MDR73 | OSM | Chetinad Railway Feeder Road | Sivagangai | 2.781 | |
| MDR75 | OSM | Cheyyar Bypass Road | Cheyyar | 0.60 | |
| MDR78 | | Chinnamanur - Seepalakottai Road | | 8.80 | Upgraded as SH227 |
| MDR80 | OSM | Chunampet Road | Villupuram | 3.00 | |
| MDR81 | OSM | Coimbatore - Siruvani Road | Coimbatore | 29.80 | MDR till KM 29/8, from there unclassified road |
| MDR83 | OSM | College Campus Road - Karaikudi Railway Station Road | Sivagangai | 1.20 | |
| MDR84 | OSM | Construction Road | Tuticorin | 2.80 | |
| MDR86 | OSM | Coonoor - Kundha Road | Udhagai | 26.80 | MDR from KM 3/2 to KM 30/3, till KM 3/2 it is NH |
| MDR87 | OSM | Courtallam - Five Falls Road | Tenkasi | 4.00 | |
| MDR88 | OSM | Courtallam - Mathalamparai Road | Tenkasi | 7.40 | |
| MDR89 | OSM | Cuddalore - Pallineliyanur Road | Cuddalore, Villupuram | 17.50 | MDR from KM 2/8 till KM 4/3 and from KM 7/6 till KM 23/6. KM 4/3 till KM 7/6 is under Puducherry UT. |
| MDR90 | OSM | Cumbam - Cumbammettu Road | Theni | 12.80 | at KM 12/8 it is Kerala state border, road joins with SH there |
| MDR91 | OSM | Denkanikottai - Kelamangalam - Uddanapalli Road | Krishnagiri | 21.20 | |
| MDR93 | OSM | Devipattinam - Pottagavayal - Nainarkoil Road | Ramanathapuram | 27.20 | KM 0/0 to KM 12/8 and KM 15/8 to KM 30/2, in between it is ODR |
| MDR94 | OSM | Dhali - Komaralingam Road | Dharapuram | 16.80 | |
| MDR95 | OSM | Dharapuram Bypass Road | Dharapuram | 0.40 | KM 3/8 to KM 4/2, till KM 3/8 it is SH |
| MDR96 | OSM | Dharapuram - Pollachi Road | Dharapuram | 1.00 | KM 0/6 to KM 1/6 |
| MDR100 | OSM | Dharmapuri - Papparapatti Road | Dharmapuri | 13.20 | |

### MDR 101 to MDR 200

| Road number | OSM relation | Name of road | Division | Length (in km) | Remarks |
| MDR101 | OSM | East Velli Street | Madurai | 0.80 | |
| MDR103 | | Edappadi - Magudanchavadi Road | | 17.80 | Upgraded as SH221 |
| MDR104 | OSM | Elumalai Road | Madurai | 12.80 | |
| MDR105 | OSM | Eraniel - Muttom Road | Nagercoil | 9.60 | |
| MDR106 | OSM | Eraniel - Rajakkamangalam Road | Nagercoil | 9.70 | KM 0/0 to KM 9/4 and KM 11/8 to KM 12/1, KM 9/4 to KM 11/8 converted to SH, from KM 12/1 it is ODR |
| MDR107 | OSM | Eraniel - Thuckalay Road | Nagercoil | 4.00 | |
| MDR108 | OSM | Erode - Chennimalai Road | Erode | 24.00 | |
| MDR109 | OSM | Old Erode-Karur Road at Kodumudi town | Erode | 1.40 | KM 36/6 to KM 38/0 |
| MDR110 | OSM | Old Karur Road via Vendipalayam | Erode | 3.30 | |
| MDR112 | OSM | Eruvadi - Thirukkurankudi Road | Tirunelveli | 5.60 | |
| MDR113 | OSM | Eathenkattumadam Road | Nagercoil | 12.20 | |
| MDR114 | OSM | Gangaikondan - Kuppakurichi Road | Tirunelveli | 6.00 | |
| MDR115 | OSM | George Road | Tuticorin | 2.40 | KM 0/0 to KM 0/53 is MDR434, approximate mapping, at the end of the road SH begins. |
| MDR116 | OSM | Gobi - Savandapur Road | Gopichettipalayam | 12.60 | |
| MDR117 | OSM | Goshen Road | Dindigul | 39.20 | KM 23/4 to KM 62/6, till KM 23/4 it is part of another MDR, from KM 62/2 another MDR begins |
| MDR119 | OSM | Govindasamy Arts College Road | Villupuram | 4.847 | |
| MDR120 | OSM | Gowthampet Road | Vaniyambadi | 0.563 | KM 0/437 to KM 1/0 |
| MDR121 | OSM | Harur Bypass Road | Dharmapuri | 2.40 | |
| MDR124 | OSM | Hosur Town - Hosur R.S. Road | Krishnagiri | 2.00 | |
| MDR125 | OSM | Imperial Bank Road | Coimbatore | 0.80 | |
| MDR126 | OSM | Iyerpadi Branch Road | Pollachi | 1.00 | MDR till KM 1/0, from there ODR begins |
| MDR130 | | Jayankondam - Sendurai road | | 25.40 | Upgraded as SH217 |
| MDR131 | OSM | Kadambur - Eppodumvendran Road | Tuticorin | 20.50 | KM 0/0 to KM 11/0 and KM 11/7 to KM 21/2 |
| MDR132 | OSM | Kadayanallur - Valasai Road | Tenkasi | 6.20 | |
| MDR133 | OSM | Kakapalayam - Attamyapatty Road | Edappadi, Salem | 5.20 | |
| MDR134 | OSM | Kakkapalayam - Chinnappampatty Road | Salem, Edappadi | 12.60 | |
| MDR135 | OSM | Kallakurichi - Kachirapalayam - Sankarapuram Road | Kallakurichi | 35.30 | |
| MDR143 | OSM | Kancheepuram Bypass road | Chengalpattu | 6.40 | |
| MDR144 | OSM | Kandambakkam Railway Feeder Road | Villupuram | 1.70 | |
| MDR147 | OSM | Karaikadu Cross Road | Cuddalore | 1.40 | |
| MDR148 | OSM | Karaikudi - Collage Campus Road | Sivagangai | 4.035 | KM 2/4 to KM 6/435 |
| MDR149 | OSM | Karatholuvu - Madathukulam - Komaralingam Road | Dharapuram | 15.60 | |
| MDR150 | OSM | Karattadipalayam - Bungalowpudur Road | Gopichettipalayam | 6.60 | |
| MDR151 | OSM | Karungadal - Munanjipatti Road | Tirunelveli | 2.80 | KM 22/0 to KM 24/8, from Tuticorin district border it is another MDR |
| MDR152 | OSM | Karungulam - Moolakaraipatti Road | Tuticorin, Tirunelveli | 15.60 | |
| MDR154 | OSM | Kasimajorpuram - Kuthukalvalasai Road | Tenkasi | 1.80 | |
| MDR155 | OSM | Kattampatty - Koduvai Road | Pollachi, Tiruppur | 36.60 | |
| MDR157 | OSM | Kaveripattinam – Kakankarai Road | Krishnagiri, Vaniyambadi | 35.20 | |
| MDR158 | OSM | Kayalpattinam Bypass Road | Tuticorin | 4.472 | |
| MDR159 | OSM | Kayathar - Kadambur Road | Tuticorin | 12.20 | |
| MDR160 | OSM | Kayathar - Kalugumalai Road | Tuticorin | 23.00 | |
| MDR161 | OSM | Keerapalayam - Sethiyathope Road | Cuddalore | 13.60 | |
| MDR162 | OSM | Killai Road | Cuddalore | 4.20 | KM 7/2 to KM 11/4 |
| MDR165 | OSM | Kinathukadavu - Kattampatti Road | Pollachi | 16.00 | |
| MDR166 | OSM | Pollachi - Vadakkipalayam - Nadupuni Road | Pollachi | 17.40 | MDR till KM 17/4, from Kerala state border it is unclassified road |
| MDR167 | OSM | KM 15/6 of Udumalpet-Chinnar Road - Amaravathi Nagar Road | Dharapuram | 5.40 | |
| MDR168 | OSM | Nazarathpet Road | Tiruvallur | 1.40 | MDR till KM 1/4, from Chengalpattu district border it is ODR |
| MDR169 | OSM | KM 6/8 of Coimbatore-Siruvani Road - KM 165/8 of Salem-Cochin Road | Coimbatore | 6.60 | |
| MDR170 | OSM | Kodaikanal - Cochin Road | Dindigul, Theni | 53.00 | KM 0/0 to KM 23/4 is for public access, KM 23/4 to KM 50/0 is unmaintained with Forest department, KM 50/0 to KM 58/4 falls within Kerala State, KM 58/4 to KM 61/4 is under Tamil Nadu for public access, from KM 61/4 at Kerala state border it is SH. |
| MDR171 | OSM | Kodaikanal - Palani Ghat Road | Dindigul, Palani | 39.60 | |
| MDR175 | OSM | Kodivery Dam Road | Gopichettipalayam | 2.00 | |
| MDR176 | OSM | Kovilpatti Junction - Pudukkottai District Border Road | Sivagangai | 11.21 | at Pudukottai District border SH201 terminates |
| MDR177 | OSM | Koilpatti - Manapparai Road | Trichy | 12.20 | |
| MDR178 | OSM | Kokkirakulam - Nanguneri Road | Tirunelveli | 5.80 | KM 4/0 to KM 9/8 |
| MDR180 | OSM | Kollegal - Hassanur Road | Gopichettipalayam | 25.80 | MDR from KM 52/4 to 78/2, till Karnataka state border it is SH |
| MDR181 | OSM | Kolli Hills Ghat Road | Namakkal | 22.00 | |
| MDR182 | | Komarapalayam - Eadapadi Road | | 25.60 | Upgraded as SH221 |
| MDR183 | OSM | Koradachery Railway Feeder Road | Tiruvarur | 0.40 | |
| MDR185 | OSM | Kottaiyur - Aranthangi Road | Sivagangai | 10.804 | KM 5/6 to KM 16/404, till KM 5/6 upgraded as NH, from Pudukottai District border at KM 16/404 it is ODR |
| MDR186 | OSM | Kottakuppam Road | Villupuram | 1.40 | |
| MDR187 | OSM | Kottar - Dharmapuram Road | Nagercoil | 8.10 | |
| MDR188 | OSM | Kottar - Manakudy Road | Nagercoil | 8.30 | KM 0/0 to KM 7/6 and KM 10/2 to KM 10/9, KM 7/6 to KM 10/2 converted to SH |
| MDR191 | OSM | Kovilpatti Bypass Road | Tuticorin | 1.00 | |
| MDR192 | | Krishnagiri - Rayakottai road | | 30.80 | Upgraded as SH225 |
| MDR193 | OSM | KRP Dam Approach Road | Krishnagiri | 2.80 | |
| MDR194 | OSM | Krishnankovil - Koomapatti Road | Virudhunagar | 14.80 | |
| MDR195 | OSM | Kulasekaramangalam - Valasai Road | Tenkasi | 10.40 | |
| MDR196 | OSM | Kulathupuzha Chowkey Road | Tenkasi | 8.20 | |
| MDR197 | OSM | Kulathur - Viralimalai Road | Trichy | 6.00 | |
| MDR198 | OSM | Kulavanigarpuram - Kurichi Road | Tirunelveli | 2.03 | |
| MDR199 | OSM | Kullanchavady - Kattugudalore Road | Cuddalore | 26.475 | |
| MDR200 | OSM | Kullanchavady Cross Road | Cuddalore | 6.31 | |

### MDR 201 to MDR 300

| Road number | OSM relation | Name of road | Division | Length (in km) | Remarks |
| MDR201 | OSM | Kumaratchi - Puliyangudi Road | Cuddalore | 7.40 | |
| MDR205 | OSM | Kumbakonam - Kollidakkarai Road | Thanjavur | 8.80 | |
| MDR206 | OSM | Kumbakonam Railway Station - Old Cauvery Bridge Road | Thanjavur | 2.80 | KM 0/4 to KM 3/2 |
| MDR209 | OSM | Kunnakudi - Kanadukathan Road | Sivagangai | 9.80 | KM 11/2 to KM 20/6 and KM 23/2 to KM 23/6. KM 20/6 to KM 23/2 is upgraded as NH. |
| MDR210 | OSM | Kunnakudi Devasthanam Road | Sivagangai | 0.195 | |
| MDR211 | OSM | Kuthalam - Komal Road | Nagapattinam | 10.00 | |
| MDR212 | | Kuthukalvalasai-Panpozhi-Thirumalaikoil road | | 9.60 | KM 3/6 to KM 13/2, upgraded as SH43 |
| MDR213 | OSM | Kuttalam - Panthanallur Road | Nagapattinam, Thanjavur | 9.80 | |
| MDR214 | OSM | Koothur Railway Feeder Road | Nagapattinam | 1.60 | |
| MDR216 | OSM | Kuzhithurai - Thengapattinam Road | Nagercoil | 7.50 | KM 0/0 to KM 7/0 and KM 11/0 to KM 11/5, KM 7/0 to KM 11/0 upgraded to SH |
| MDR217 | OSM | Lake Bridge - Observatory Road | Dindigul | 4.00 | |
| MDR220 | OSM | Link Road | Tuticorin | 2.08 | Approximate alignment |
| MDR221 | OSM | Kongampalayam - Rayapalayam Link Road connecting Erode-Sathy Road with Old Salem-Cochin NH | Erode | 1.40 | |
| MDR222 | OSM | Udumalpet-Chinnadharapuram Road - Palani-Dharapuram Road Link Road | Dharapuram | 0.60 | |
| MDR224 | OSM | Ma.Po.C. Road | Tiruvallur | 0.80 | |
| MDR226 | OSM | Madhukkur - Pattukkottai Road | Thanjavur | 11.00 | KM 59/0 to KM 70/0 |
| MDR227 | OSM | Madurai - Palamedu Road | Madurai | 18.20 | KM 6/2 to KM 24/4, till KM 6/2 it is SH |
| MDR231 | OSM | Old Madurai - Thondi Road | Sivagangai | 1.60 | KM 72/4 to KM 74/0 |
| MDR232 | OSM | Madurai - Thondi Road | Madurai | 5.00 | KM 12/8 to KM 17/8, from Sivagangai district border another MDR continues |
| MDR233 | OSM | Old Madurai - Kanyakumari Road | Tirunelveli | 0.38 | KM 149/5 to KM 149/88 |
| MDR234 | | Madurai - Melakkal Road | | 13.00 | KM 4/0 to KM 17/0, upgraded as SH73A |
| MDR237 | OSM | Mallapuram - Mookanur Road | Dharmapuri | 18.80 | |
| MDR238 | OSM | Malligundam - Koonandiyur Road | Edappadi | 6.634 | |
| MDR239 | OSM | Mamallapuram - Kokilamedu Road | Chengalpattu | 3.00 | |
| MDR240 | OSM | Managiri - Kallal - Madagupatti Road | Sivagangai | 15.084 | KM 11/6 to KM 26/684, till KM 11/6 upgraded to SH |
| MDR243 | OSM | Mangalrevu - Elumalai Road | Madurai | 22.40 | |
| MDR244 | OSM | Mannachanallur - Edumalai - Elanthalaipatty Road | Trichy, Perambalur | 29.80 | |
| MDR245 | OSM | Mannargudy - Eyyalur Road | Cuddalore | 10.20 | |
| MDR246 | OSM | Mannargudi - Thiruthuraipoondi Road | Tiruvarur | 1.40 | |
| MDR248 | OSM | Mannargudi - Orathanadu - Thiruvonam Road | Tiruvarur, Thanjavur | 38.80 | KM 4/8 to KM 43/6 |
| MDR249 | OSM | Mariyammankoil Railway Approach Road | Thanjavur | 1.20 | |
| MDR250 | OSM | Marthandam - Karungal Road | Nagercoil | 6.80 | |
| MDR252 | OSM | Mathalankulam Street | Tiruvannamalai | 0.60 | |
| MDR255 | OSM | Mavoor - Sattiyakkudy Road | Tiruvarur, Nagapattinam | 7.20 | |
| MDR256 | OSM | Mayiladuthurai - Muthupet Road | Tiruvarur | 3.60 | KM 69/0 to KM 72/6, KM 91/8 to KM 94/2 section of 2.40 KMs modified as MDR1054 |
| MDR257 | OSM | Mayiladuthurai - Pattavarthi Road | Nagapattinam | 13.00 | KM 0/2 to KM 13/2 |
| MDR258 | OSM | Mayiladuthurai Rail Over Bridge Service Road | Nagapattinam | 1.00 | |
| MDR259 | OSM | Mayiladuthurai - Pattavarthy Road (town limit) | Nagapattinam | 0.600 | KM 0/6 to KM 1/2 |
| MDR261 | OSM | Meingnanapuram - Munanjipatti Road | Tuticorin | 22.80 | from Tirunelveli district border it is another MDR |
| MDR262 | OSM | Melakkal - Peranai Road | Madurai, Dindigul | 21.00 | KM 17/4 to KM 38/4 |
| MDR263 | OSM | Melpattampakkam Railway Feeder Road | Cuddalore | 0.20 | |
| MDR266 | OSM | Melur - Poovanthi - Thiruppuvanam Road | Madurai, Sivagangai | 20.839 | KM 0/0 to KM 19/4 and KM 19/564 to 21/003, from KM 21/003 road converted to NH |
| MDR267 | OSM | Memathur Channel Bund Road | Cuddalore | 6.20 | ODR joins at KM 6/2 |
| MDR268 | | Mettur-Palar Road | | 29.40 | Upgraded as SH20A |
| MDR269 | OSM | Meycode - Kulasekaram Road | Nagercoil | 7.20 | |
| MDR270 | OSM | Mohanur - Valayapatti Road | Namakkal | 13.60 | |
| MDR271 | OSM | Morappur - Karimangalam - Marandahalli Road | Dharmapuri | 54.40 | |
| MDR272 | OSM | Mudhanai Road | Cuddalore | 8.00 | ODR joins at KM 8/0 |
| MDR273 | OSM | Mudukulathur - Kamuthi Road | Ramanathapuram | 18.40 | |
| MDR275 | OSM | Mundiyampakkam Railway Feeder Road | Villupuram | 0.20 | |
| MDR276 | OSM | Musiri - Pulivalam Road | Trichy | 24.00 | |
| MDR277 | OSM | Musiri - Thathaiyangarpettai - Eragudy - Murugur Road | Trichy | 40.805 | |
| MDR278 | OSM | Muthanendal Railway Feeder Road | Sivagangai | 0.053 | Approximate road chosen |
| MDR280 | OSM | Mylampatty - Palayam Road | Karur | 10.80 | MDR till 10/8, from Dindigul district border another MDR terminates |
| MDR282 | OSM | Nagalur - Puthur Road | Salem | 3.60 | |
| MDR283 | OSM | Nagapattinam - Velaganni Road | Nagapattinam | 1.20 | KM 1/2 to KM 2/4 |
| MDR285 | OSM | Nainamalai - Sendamangalam Road | Namakkal | 8.60 | |
| MDR286 | OSM | Nallur - Kayalpattinam Road | Tuticorin | 3.80 | |
| MDR287 | OSM | Nalli Railway Station Road | Virudhunagar | 1.80 | from KM 1/8 an ODR begins |
| MDR291 | OSM | Nanguneri - Kalakad Road | Tirunelveli | 11.00 | |
| MDR292 | OSM | Nanguneri - Moolaikaraipatti Road | Tirunelveli | 14.20 | |
| MDR293 | OSM | Nanjundapuram - Naducombai Road | Namakkal | 8.00 | |
| MDR294 | OSM | New Austinpatti Road | Madurai | 2.00 | |
| MDR295 | OSM | Neyveli - Valayamadevi Road | Cuddalore | 8.60 | Intermediate section is closed for NLC mines operations. |
| MDR296 | OSM | Kothandaramasamy Koil Road | Ramanathapuram | 0.90 | |
| MDR297 | OSM | North High Ground Road | Tirunelveli | 2.70 | |
| MDR298 | OSM | Observatory - Pillar Rock Road | Dindigul | 1.20 | |
| MDR299 | OSM | Okkur - Keelapoongudi Road | Sivagangai | 11.493 | KM 13/19 to KM 24/683 |
| MDR300 | OSM | Okkur - Nattarasankottai Road | Sivagangai | 8.531 | |

### MDR 301 to MDR 400

| Road number | OSM relation | Name of road | Division | Length (in km) | Remarks |
| MDR301 | OSM | Olakkur Railway Feeder Road | Villupuram | 2.40 | |
| MDR302 | OSM | Old Austinpatti Road | Madurai | 2.00 | |
| MDR303 | OSM | Old Courtallam Falls Road | Tenkasi | 2.40 | |
| MDR304 | | Old Cuddalore-Chidambaram road | | 3.20 | KM 34/0 to KM 37/2, upgraded as NH45A |
| MDR305 | OSM | Madurai - Thondi Road | Sivagangai | 1.40 | KM 17/8 to KM 19/2 |
| MDR306 | OSM | Thriuverumbur - Grandanaicut Road | Trichy, Thanjavur | 9.40 | |
| MDR307 | | Omalur-Mecheri Road | | 14.60 | Upgraded as SH222 |
| MDR308 | | Palacode - Nagadasampatti road | | 21.00 | Upgraded as SH224 |
| MDR310 | OSM | Palani Adivaram -Thekkanthottam Road | Palani | 12.185 | KM 0/0 to KM 0/972 and KM 1/987 to KM 13/2, at KM 13/2 another MDR terminates |
| MDR311 | N/A | Palayamkottai Bus Stand - Tiruchendur Road | Tirunelveli | 0.13 | KM 3/67 to KM 3/8, unable to identify the road segment |
| MDR312 | OSM | Palayam - Madukkarai Road | Palani | 2.20 | MDR till 2/2, at Karur district border another MDR terminates |
| MDR313 | OSM | Palayam - Servaikaranpatti Road | Palani | 3.20 | At KM 3/2 another MDR terminates |
| MDR314 | OSM | Palayamkottai - Thiruthu Road | Tirunelveli | 11.40 | |
| MDR315 | OSM | Palayamkottai - Tiruchendur Road | Tirunelveli | 0.20 | KM 4/2 to KM 4/4 |
| MDR319 | | Pallavaram-Kundrathur Road | | 6.80 | KM 1/0 to KM 7/8, upgraded as 113A |
| MDR322 | OSM | Panchalam Railway Feeder Road | Villupuram | 0.20 | |
| MDR324 | OSM | Pandikanmai Railway Feeder Road | Ramanathapuram | 0.40 | |
| MDR325 | OSM | Pannaikadu - Mangalamcombu Road | Dindigul | 8.40 | KM 3/6 to KM 12/0 |
| MDR326 | OSM | Pannaikadu Road | Dindigul | 3.60 | |
| MDR328 | OSM | Pappireddipatti - Mallapuram Road | Dharmapuri | 19.00 | |
| MDR328A | OSM | Pappireddipatti - Pallipatti - Thenkaraikottai - Morappur Road | Dharmapuri | 30.00 | |
| MDR329 | | Paramakudi - Mudukulathur Road to Vilathur Road | | 2.60 | Merged with MDR548 |
| MDR330 | OSM | Paramankurichi - Tiruchendur Road | Tuticorin | 8.40 | |
| MDR331 | OSM | Paramankurichi - Udangudi Road | Tuticorin | 6.80 | |
| MDR332 | OSM | Paramathy - Noyyal Road | Karur | 10.60 | |
| MDR333 | OSM | Paramathy - Rajapuram Road | Karur | 13.682 | |
| MDR334 | OSM | Parasalai - Panachamoodu Road | Nagercoil | 2.60 | KM 2/4 to KM 5/0, runs between two Kerala borders |
| MDR336 | OSM | Parikkal - Periyasevalai Road | Kallakurichi | 12.40 | |
| MDR337 | OSM | Parisalthurai Road | Trichy | 0.70 | |
| MDR338 | OSM | Parthibanur Railway Feeder Road | Ramanathapuram | 2.60 | |
| MDR339 | OSM | Parthibanoor - Vilathur Road | Ramanathapuram | 12.80 | |
| MDR340 | OSM | Pasupathikoil Railway Approach Road | Thanjavur | 1.20 | |
| MDR341 | OSM | Patchalur- Vadakadu - Oddanchatram Road | Palani | 31.60 | |
| MDR342 | OSM | Pattukkottai - Adirampattinam Road | Thanjavur | 11.60 | KM 47/2 to KM 58/8 |
| MDR343 | OSM | Pattukkottai - Muthupettai Road | Thanjavur | 17.20 | KM 46/2 to KM 63/4 |
| MDR345 | OSM | Pei Gopuram Road | Tiruvannamalai | 1.60 | |
| MDR346 | OSM | Peikulam - Perungulam Road | Tuticorin | 9.60 | |
| MDR347 | | Pennagaram - Perumbalai - Mecheri Road | | 9.080 | KM 34/4 to KM 43/48, upgraded as SH222 |
| MDR348 | | Pennagaram - Perumbalai Road | | 34.40 | Upgraded as SH222 |
| MDR349 | OSM | Pennagaram Bypass Road | Dharmapuri | 2.60 | |
| MDR351 | OSM | Peralam - Karaikkal Road | Tiruvarur | 7.40 | KM 0/0 to KM 6/8 and KM 8/0 to KM 8/6, remaining falls into Puducherry UT. |
| MDR354 | OSM | Old Valparai - Sholayar - Chalakkudy Road | Pollachi | 19.20 | MDR till KM 19/2, from Kerala state border it is SH. |
| MDR355 | OSM | Perumal Tank Bund Road | Cuddalore | 14.60 | chainage from KM 16/6 to KM 31/2 |
| MDR357 | OSM | Perundurai - Maccanamcombai Road | Erode, Gopichettipalayam | 38.80 | |
| MDR358 | OSM | Petmanagaram - Vagaikulam Road | Tuticorin | 12.00 | |
| MDR359 | OSM | Pettai - Thiruvengadanathapuram Road | Tirunelveli | 1.60 | |
| MDR361 | OSM | Podanur Junction Road | Coimbatore | 2.60 | |
| MDR362 | OSM | Pollachi Bypass road | Pollachi | 2.60 | |
| MDR365 | OSM | KM 103/10 of Pondy-Krishnagiri Road - KM 54/2 of Villupuram-Tiruvannamalai Road | Tiruvannamalai | 1.20 | |
| MDR366 | OSM | Pondy - Krishnagiri Road | Krishnagiri | 0.955 | KM 243/045 to KM 244/0 |
| MDR367 | OSM | Ponparappi Bypass Road | Ariyalur | 2.10 | KM 15/7 - KM 16/3 and KM 16/7 - KM 18/2 |
| MDR368 | OSM | Ponnamallee - Avadi Road | Tiruvallur | 0.60 | KM 8/0 - KM 8/6 |
| MDR369 | | Ponnamallee - Kundrathur Road | | 5.20 | Upgraded as SH113A |
| MDR370 | OSM | Poonthottam - Nachiyarkoil Road | Tiruvarur, Thanjavur | 25.40 | |
| MDR371 | OSM | Poovalur - Siruganur - Thirupattur Road | Trichy | 25.60 | |
| MDR372 | OSM | Pudukkottai - Pattukottai Road | Pudukkottai, Thanjavur | 28.07 | KM 19/33 to KM 47/4 |
| MDR374 | OSM | Puduchathiram Railway Feeder Road | Cuddalore | 1.00 | |
| MDR375 | OSM | Pudukkottai - South Kulathur Road | Pudukkottai | 8.00 | KM 42/8 to KM 50/8 |
| MDR376 | OSM | Pudupatti - Mangalrevu Road | Madurai | 13.80 | |
| MDR377 | OSM | Pudupatti - Nedungudi Road | Pudukkottai | 4.20 | MDR till Sivagangai district border, then unclassified. |
| MDR378 | OSM | Puduvoyal - Periyapalayam Road | Tiruvallur | 12.00 | |
| MDR379 | OSM | Puduvoyal – Pulicut Road | Tiruvallur | 6.20 | |
| MDR380 | OSM | Pullambadi - Sirugalappur - Padalur Road | Trichy | 23.60 | |
| MDR383 | OSM | Chidambaram - Puthur Road | Cuddalore | 15.40 | |
| MDR384 | OSM | Puttuthakku Causeway Road | Vellore | 5.40 | |
| MDR387 | OSM | Rajapalayam - Ayyanarkovil Road | Virudhunagar | 13.00 | |
| MDR389 | OSM | Ramanathapuram - Devipattinam Road | Ramanathapuram | 0.40 | KM 15/2 to KM 15/6, un till KM 15/2 upgraded as NH/SH |
| MDR390 | OSM | Ramanathapuram - Nainarkoil - Emaneswaram Road | Ramanathapuram | 9.60 | KM 30/2 to KM 39/8, till KM 30/2 upgraded to SH |
| MDR391 | OSM | Ramanathapuram - Keelakkarai Road | Ramanathapuram | 5.00 | KM 0/4 to KM 4/0 and KM 15/8 to KM 17/2, in between upgraded to NH. |
| MDR393 | OSM | Ramanathapuram Railway Feeder Road | Ramanathapuram | 0.80 | KM 0/8 to KM 1/6 |
| MDR394 | OSM | Rameswaram Railway Feeder Road | Ramanathapuram | 0.30 | |
| MDR395 | OSM | South Car Street | Ramanathapuram | 0.40 | |
| MDR396 | OSM | Chinnakadai Road | Ramanathapuram | 0.40 | |
| MDR397 | OSM | East Car Street | Ramanathapuram | 0.20 | |
| MDR398 | OSM | Middle Car Street | Ramanathapuram | 0.40 | |
| MDR399 | OSM | North Car Street | Ramanathapuram | 0.40 | |
| MDR400 | OSM | West Car Street | Ramanathapuram | 0.20 | |

### MDR 401 to MDR 500

| Road number | OSM relation | Name of road | Division | Length (in km) | Remarks |
| MDR401 | | Ranipet - Sholinghur Road | | 10.60 | Upgraded as SH61A |
| MDR402 | OSM | Rasipuram - Attur Road | Namakkal | 3.65 | |
| MDR403 | OSM | Reddiyarpatti - Vijayanarayanam Road | Tirunelveli | 40.800 | |
| MDR404 | OSM | Palladam Town Road | Tiruppur | 0.60 | |
| MDR406 | OSM | Salavathy Road | Villupuram | 2.00 | |
| MDR407 | OSM | Saliyamangalam - Papanasam Road | Thanjavur | 16.40 | |
| MDR408 | OSM | Sankarankoil - Thiruvenkadam Road | Tenkasi | 17.76 | |
| MDR409 | OSM | Sankarankovil - Veerasigamani Road | Tenkasi | 15.40 | |
| MDR411 | OSM | Sannathi Ramalinganar Street | Tiruvannamalai | 0.80 | |
| MDR412 | OSM | Santhapuram Road | Nagercoil | 12.40 | |
| MDR413 | OSM | Sarugani - Devakottai Road | Sivagangai | 15.48 | |
| MDR414 | OSM | Sathirakudi Railway Feeder Road | Ramanathapuram | 0.40 | |
| MDR416 | OSM | Seelaipillaiyarputhur - Kattuputhur - Namakkal Road | Trichy | 10.80 | MDR till KM 10/8, at Namakkal district border another MDR terminates |
| MDR417 | OSM | Selekarachal - Sulthanpet Road | Coimbatore, Pollachi | 11.60 | |
| MDR418 | OSM | Servaikaranpatti - Aravakurichi Road | Palani | 18.20 | MDR from KM 6/4 to KM 24/6, at Karur district border another MDR terminates with chainage of KM 6/6, overlapping between divisions, at KM 24/6 another MDR terminates. |
| MDR419 | OSM | Service Road | Tirunelveli | 0.90 | |
| MDR421 | OSM | Shevapet - Elampillai Road | Salem | 17.20 | |
| MDR422 | OSM | Shoolagiri - Berigai Road | Krishnagiri | 22.00 | MDR till KM 22/0, at Andhra Pradesh border another road joins |
| MDR424 | | Singarapet - Thirupathur Road | | 13.20 | KM 16/4 to KM 29/6, upgraded as SH18A |
| MDR425 | OSM | Sirkali - Panangattangudi Road | Nagapattinam | 9.80 | |
| MDR426 | OSM | Sirkali - Thirumullaivasal - Koolaiyar Road | Nagapattinam | 19.00 | |
| MDR430 | OSM | Sivakasi - Kalugumalai Road | Tenkasi | 2.60 | KM 21/0 to KM 23/6, another SH terminates at Tenkasi District border |
| MDR431 | OSM | Sivaramapettai - Panpozhi - Shencottai Road | Tenkasi | 15.40 | |
| MDR431A | OSM | Kadayanallur - Achampudur Road | Tenkasi | 6.40 | |
| MDR432 | | Solathiram-Srimushnam road | | 20.00 | Upgraded as SH216 |
| MDR433 | OSM | South Arcot Frontier Road | Chengalpattu | 4.20 | |
| MDR434 | OSM | South Beach Road | Tuticorin | 0.53 | |
| MDR435 | OSM | Srivaikuntam - Pudukkottai Road | Tuticorin | 17.22 | |
| MDR436 | OSM | Girder Bridge Road | Tuticorin | 0.40 | |
| MDR437 | OSM | Sulur - Selekarchal Road | Coimbatore | 11.00 | |
| MDR438 | OSM | Sulur Railway Feeder Road | Coimbatore | 5.60 | |
| MDR439 | OSM | Suramangalam - Tharamangalam Road | Salem | 11.10 | Old chainage KM 5/7 to KM 23/8, KM 16/8 to KM 23/8 upgraded as SH219 and chainage altered to KM 0/0 to KM 11/10. |
| MDR440 | | Surandai-Senthamaram Road | | 10.87 | KM 12/0 to KM 22/87, upgraded as SH39B |
| MDR440A | OSM | Idaikal - Sendamaram Road | Tenkasi | 12.80 | |
| MDR441 | OSM | Swamimalai - Patteeswaram Road | Thanjavur | 4.20 | |
| MDR442 | | Tenkasi Loop Road | | 0.80 | Upgraded as SH43 |
| MDR446 | OSM | Thambikottai Railway Approach Road | Thanjavur | 0.80 | |
| MDR447 | | Thandalam - Perambakkam - Thakkolam - Arugilpadi Road | | 39.40 | Upgraded as SH50B |
| MDR449 | OSM | Thanjavur - Pattukkottai Road | Thanjavur | 2.80 | Orathanadu urban stretch (KM 21/2 to KM 24/0) |
| MDR451 | | Tharamangalam - Jalagandapuram Road | | 10.00 | Upgraded as SH219A |
| MDR452 | OSM | Tharamani - Perungudi Road | Chennai City Roads | 2.01 | |
| MDR453 | OSM | Tharangampadi - Mayiladuthurai Road | Nagapattinam | 18.40 | KM 11/2 to KM 29/6 |
| MDR454 | OSM | Thazhanallur Railway Feeder Road | Cuddalore | 4.80 | |
| MDR455 | OSM | Thedavoor - Thammampatty Road | Salem | 24.60 | |
| MDR456 | | Theertham - Berigai road | | 18.20 | Upgraded as SH226 |
| MDR460 | OSM | Trichy - Chidambaram Byepass Road | Trichy | 1.80 | |
| MDR461 | OSM | Trichy - Kulumani - Jeeyapuram Road | Trichy | 16.40 | |
| MDR461A | OSM | Konarchathiram/Pandamangalam - Perur - Kulumani Road | Trichy | 11.30 | Road is of two segments KM 0 to KM 2/7 from Konarchathiram and KM 2/7 to KM 11/3 from Pandamangalam |
| MDR462 | OSM | Thirukazhukundram Bypass Road | Chengalpattu | 5.40 | |
| MDR466 | OSM | Thirumathikunnam Railway Feeder Road | Tiruvarur | 2.60 | |
| MDR467 | OSM | Thirunellikkaval - Kolappadu - Karunganni Road | Nagapattinam, Tiruvarur | 19.42 | KM 0/0 to KM 12/2, KM 12/38 to 19/6 |
| MDR468 | OSM | Thirupachur - Kadambattur - Kondancheri Road | Tiruvallur | 12.50 | |
| MDR469 | OSM | Thirupparankundram Town Road | Madurai | 1.40 | |
| MDR472 | OSM | Thiruppananthal - Aduthurai Road | Thanjavur | 10.20 | KM 0/2 to KM 10/4 |
| MDR477 | OSM | KM 33/6 of East Coast Road to Muttukadu Picturesque Beauty Spot Road | Chengalpattu | 0.84 | |
| MDR479 | OSM | Thisayanvilai - Udangudi Road | Tirunelveli, Tuticorin | 22.80 | |
| MDR480 | OSM | Thittachery - Thirumalarayanpattinam Road | Nagapattinam | 3.40 | |
| MDR482 | OSM | Thogamalai - Mylampatty Road | Karur | 18.80 | |
| MDR484 | OSM | Thoothukudi - Tharuvaikulam Road | Tuticorin | 6.80 | |
| MDR486 | OSM | Bhavani - Vellithiruppur Road | Erode | 18.20 | |
| MDR487 | OSM | Thottiyam - Kattuputhur Road | Trichy | 13.80 | |
| MDR488 | OSM | Thuckalay - Thadikarankonam Road | Nagercoil | 8.60 | |
| MDR489 | OSM | Thudiyalur - Kovilpalayam Road | Coimbatore | 15.40 | |
| MDR490 | OSM | Thirumazhisai - Sathyavedu Road | Tiruvallur | 1.20 | KM 44/0 - KM 45/2 |
| MDR491 | OSM | Thuraimangalam Bungalow Road | Perambalur | 1.40 | |
| MDR496 | OSM | Tiruchendur - Kulasai - Udangudi Road | Tuticorin | 4.766 | KM 13/4 to KM 18/166 |
| MDR499 | OSM | Thirukovilur Railway Feeder Road | Kallakurichi | 1.00 | |

### MDR 501 to MDR 600

| Road number | OSM relation | Name of road | Division | Length (in km) | Remarks |
| MDR503 | OSM | Tiruvannamalai - Kanji Road | Tiruvannamalai | 21.60 | |
| MDR505 | OSM | Thiruvathipuram - Arni Road | Cheyyar | 30.40 | |
| MDR506 | OSM | Tiruchengode Bypass Road | Namakkal | 1.40 | |
| MDR508 | OSM | Udaiyarpatti - Seevalaperi Road | Tirunelveli | 16.60 | |
| MDR509 | OSM | Udumalpet - Chinnar Road | Dharapuram | 28.80 | MDR till KM 28/8, from Kerala state border it is SH |
| MDR510 | OSM | Udumalpet - Komaralingam Road | Dharapuram | 18.80 | MDR till KM 18/8, from Dindigul district border another MDR terminates |
| MDR511 | OSM | Udumalpet - Senjeri Hills Road | Dharapuram, Pollachi | 28.20 | |
| MDR512 | OSM | Udumalpet - Thirumoorthi Hills Road | Dharapuram | 13.80 | KM 7/0 to KM 20/8, till KM 7/0 another MDR exists. |
| MDR513 | OSM | Ulundurpet Railway Feeder Road | Kallakurichi | 0.40 | |
| MDR516 | OSM | Uthamapalayam Town Road | Theni | 1.20 | |
| MDR517 | OSM | Uthangarai Bypass Road | Krishnagiri | 1.20 | |
| MDR518 | OSM | Uthiramerur - Kammalampoondi - Acharapakkam Road | Chengalpattu | 18.40 | Ends at SH-115 Cheyyur-Vandavasi Road |
| MDR520 | OSM | Uthiyur - Kundadam Road | Tiruppur, Dharapuram | 10.60 | |
| MDR521 | OSM | Uthukuli R.S. - Uthukuli Town Road | Tiruppur | 2.40 | |
| MDR522 | OSM | Vadachittur - Chettipalayam Road | Pollachi | 11.80 | |
| MDR523 | OSM | Vadachittur - Negamam Road | Pollachi | 10.80 | |
| MDR525 | OSM | Vadavalam - Pudupatti Road | Pudukkottai | 24.80 | KM 8/8 to KM 33/6 |
| MDR526 | OSM | Vaigai Causeway Approach Road | Madurai | 0.80 | |
| MDR530 | OSM | Valapady - Thimmanaickenpatty Road | Salem | 10.60 | |
| MDR531 | OSM | Valayapatti - Andapuram Road | Namakkal | 7.40 | MDR till KM 7/4, at Trichy district border another MDR terminates |
| MDR532 | OSM | Vallam - Orathanadu Road | Thanjavur | 21.60 | |
| MDR533 | OSM | Vallampadugai Railway Feeder Road | Cuddalore | 0.40 | |
| MDR534 | OSM | Valparai - Manicka Kurangumudi Road | Pollachi | 10.20 | |
| MDR536 | OSM | Varakkalpattu Railway Feeder Road | Cuddalore | 0.10 | |
| MDR540 | OSM | Vedanthangal Road | Chengalpattu | 12.60 | |
| MDR541 | OSM | Verakeralampudur - Shanmuganallur Road | Tenkasi | 28.60 | |
| MDR542 | OSM | Veeranam Tank Bund Road | Cuddalore | 14.40 | |
| MDR543 | | Velachery Bye Pass Road | | 1.90 | Upgraded as SH48C |
| MDR544 | OSM | Velankanni - Thiruthuraipoondi Road | Tiruvarur | 1.40 | KM 38/8 to KM 40/2 |
| MDR545 | OSM | Velayuthampalayam - Noyyal Road | Karur | 10.708 | KM 17/2 to KM 27/908 |
| MDR546 | | Vellore Municipal Bypass Road | | 1.20 | Upgraded as SH230 |
| MDR547 | OSM | Velur - Mohanur Road | Namakkal | 16.20 | |
| MDR548 | OSM | Melayakudi - Vilathur - Muthaneri Road | Ramanathapuram | 15.45 | |
| MDR552 | OSM | Vridhachalam East and North Fort Street | Cuddalore | 0.40 | |
| MDR553 | OSM | Vridhachalam Good Shed Road | Cuddalore | 0.50 | |
| MDR554 | OSM | Vridhachalam Railway Feeder Road | Cuddalore | 0.50 | |
| MDR555 | OSM | Walajah Railway Station Road | Vellore | 3.20 | Extension to SH61 (KM 1/0 to 4/2) |
| MDR559 | OSM | Thiruppuvanam West Car Street | Sivagangai | 0.10 | Approximate road chosen |
| MDR560 | OSM | Yelagiri Hill Road | Vaniyambadi | 14.40 | |
| MDR561 | OSM | Yercaud - Vaniyar Road | Salem | 7.20 | |
| MDR563 | OSM | Yercaud Loop Road | Salem | 33.60 | |
| MDR564 | OSM | Abdullapuram - Moranam Road | Cheyyar | 24.25 | |
| MDR565 | OSM | Acharapakkam - Periyakalakadi Road | Chengalpattu | 15.00 | |
| MDR566 | OSM | Agaramthen - Kovilanchery Road | Chennai City Roads | 7.10 | |
| MDR568 | OSM | Sholavandan - Andipatti - Valayapatti Road | Madurai | 30.00 | MDR till 30/0, from there it is ODR |
| MDR570 | OSM | Andipatty - Theppampatti - Velappar Kovil Road | Theni | 18.00 | |
| MDR571 | OSM | Annur - Sirumugai Road | Coimbatore | 16.75 | |
| MDR572 | OSM | Arakkonam - Melpakkam Road | Vellore | 2.40 | |
| MDR574 | OSM | Puthambur - Venjamangudular - Pungambadi Road | Karur | 16.19 | |
| MDR575 | OSM | Avadi - Vaniyanchatiram Road | Tiruvallur | 10.40 | KM 1/6 - KM 12/0 |
| MDR575A | OSM | Vellanur - Red Hills Road | Tiruvallur | 9.00 | |
| MDR576 | OSM | Azhampoondy - Mazhavanthangal Road | Villupuram | 22.50 | |
| MDR577 | OSM | Banavaram - Sendhamangalam - Ganapathipuram Road | Vellore | 27.60 | |
| MDR578 | OSM | Brammadesam - Kiliyanur - Ranganathapuram Road | Villupuram | 20.20 | |
| MDR579 | OSM | KM 43/2 of NH49 - Kattanoor Road | Sivagangai, Virudhunagar | 22.883 |
| MDR580 | OSM | Veeramangalam - Mahankalikapuram - Ammayarkuppam Road | Tiruvallur | 11.60 | |
| MDR581 | OSM | Chengalpattu - Thiruporur Road | Chengalpattu | 21.80 | |
| MDR582 | OSM | Cheyyar Anaicut Road | Cheyyar | 19.20 | |
| MDR583 | OSM | Chidambaram - Keelnatham - Veeranam Tank Bund Road | Cuddalore | 16.80 | |
| MDR584 | OSM | Chinnadharapuram - Kodumudi Road | Karur | 21.00 | MDR till 21/0, from Erode district border it is ODR |
| MDR585 | OSM | Chitharasur Road | Cuddalore | 4.90 | |
| MDR586 | OSM | Thondamuthur - Madampatty Road | Coimbatore | 3.20 | |
| MDR587 | OSM | Cumbam - Kamayagowndanpatty Road | Theni | 3.60 | |
| MDR588 | OSM | Denkanikottai - Anchety - Natrampalayam Road | Krishnagiri | 43.00 | Begins at SH termination point, runs till KM 43/0, then it is unclassified road |
| MDR589 | OSM | Dharumathupatty - Adalur - Thandigudi Road | Dindigul | 45.00 | |
| MDR590 | OSM | Dindigul - Manakkattur Road | Dindigul | 30.82 | |
| MDR591 | | Edappady - Poolampatty - Mettur RS Road | | 12.935 | Upgraded as SH220A |
| MDR592 | OSM | Edward Memorial Road (Girivalapathai) | Namakkal | 3.20 | |
| MDR593 | OSM | Ilayangudi - Vandal - Sukkirapatti Road | Sivagangai, Ramanathapuram | 42.40 | |
| MDR594 | OSM | Gajalnaickenpatty - Panamarathupatty - Seshanchavadi Road | Salem | 38.09 | |
| MDR596 | OSM | GST Road - Padalam - Cheyyur Road | Chengalpattu | 32.00 | |
| MDR597 | OSM | GST Road - Arungal - Nallambakkam Road | Chengalpattu | 12.40 | |
| MDR598 | OSM | Guduvancheri - Kottamedu Road | Chengalpattu | 17.60 | |
| MDR599 | OSM | Gummidipoondi – Madarapakkam Road | Tiruvallur | 16.85 | |
| MDR599A | OSM | Nagarajakandigai - Sirupuzhalpettai Road | Tiruvallur | 8.00 | |
| MDR600 | | Jeyamangalam - Eluvanampatti Road | | 8.425 | Merged with MDR903 |

### MDR 601 to MDR 700

| Road number | OSM relation | Name of road | Division | Length (in km) | Remarks |
| MDR601 | OSM | Akkarapakkam - Thirunilai - Arani Road | Tiruvallur | 7.70 | |
| MDR602 | OSM | Kadampuliyur - Sendanadu - Ulundurpet Road | Cuddalore, Kallakurichi | 30.20 | |
| MDR603 | OSM | Kalagam - Avudayarkoil Road | Thanjavur, Pudukkottai | 36.20 | |
| MDR604 | OSM | Kanniseri - Mathiyasenai Road | Virudhunagar | 15.60 | |
| MDR605 | OSM | Karamadai - Tholampalayam Road | Coimbatore | 16.60 | MDR till KM 16/6, then unclassified road continues |
| MDR606 | OSM | Karur - Esanatham - Koombur - Vedasandur Road | Karur, Palani | 51.225 | KM 0/0 to KM 35/8 and 35/625 to 51.225, section KM 35/625 to KM 35/8 is overlapping between divisions. |
| MDR607 | OSM | Katpadi - Vallimalai Road | Vellore | 19.60 | |
| MDR608 | OSM | Keelapalur - Thirumalapadi - Pullambadi Road | Ariyalur, Trichy | 34.00 | |
| MDR609 | OSM | Kodavasal - Koradachery - Koothanallur - Mavoor Road | Tiruvarur | 35.60 | |
| MDR610 | OSM | Kodungaiyur – Vazhudhugaimedu Road | Tiruvallur | 8.80 | |
| MDR611 | OSM | Koduvai - Nachipalayam Road | Tiruppur | 17.20 | |
| MDR612 | | Koduvilarpatti - S.Alagapuri - Seelayampatti Road | | 23.255 | Upgraded as SH228 |
| MDR613 | OSM | Kokkulam - Uthappanaickanur Road | Madurai | 29.20 | |
| MDR616 | OSM | Krishnamanayakkanthoppu Road | Theni | 0.70 | KM 7/9 to KM 8/6, KM 1/6 to KM 7/9 modified as MDR1168 |
| MDR618 | OSM | Kunnam - Veppur - Vayalapadi Road | Perambalur | 18.80 | |
| MDR619 | OSM | Kurinjipady - Palur Road | Cuddalore | 21.30 | |
| MDR620 | OSM | M.Kunnathur - Naripalayam Road | Kallakurichi | 20.30 | |
| MDR621 | OSM | M.Reddiapatti - Salukkuvarpatti - Thoppalakarai Road | Virudhunagar | 17.40 | |
| MDR622 | OSM | Madipakkam - Velachery Road | Chennai City Roads | 3.20 | |
| MDR623 | OSM | Madukkarai - Chettipalayam Road | Coimbatore | 12.60 | |
| MDR625 | OSM | Mahadhanapuram - Panjapatty - Tharagampatti Road | Karur | 33.671 | |
| MDR626 | OSM | Mailam - Karattai Road | Villupuram | 23.10 | |
| MDR627 | OSM | Manamadurai - T.Pudukkottai - Paramakudi Road | Sivagangai | 24.80 | |
| MDR628 | OSM | Manapparai -Tharagampatti- Gujiliamparai Road | Trichy, Karur, Palani | 34.00 | Road begins on the outskirts of Manapparai |
| MDR629 | OSM | Manjanaickenpatty - Kallimandayam Road | Palani | 18.00 | |
| MDR631 | OSM | Mariamman Kovil - Fathimanagar Road | Virudhunagar | 1.50 | |
| MDR632 | OSM | Mayanur - Sengal - Panchapatty Road | Karur | 16.555 | |
| MDR633 | | Medavakkam - Mambakkam - Sembakkam Road | | 26.80 | Upgraded as SH110A |
| MDR634 | OSM | Medur - Gummidipoondi Road | Tiruvallur | 23.20 | |
| MDR635 | | Mount - Medavakkam Road | | 9.10 | Upgraded as SH48A |
| MDR636 | OSM | Mudukarai - Kadalur Road | Chengalpattu | 28.80 | |
| MDR637 | OSM | Mudukulathur - Uthiragosamangai Road | Ramanathapuram | 26.60 | |
| MDR638 | OSM | Mudukulathur - Veerasolam - KM 99/4 of SH42 Road | Ramanathapuram, Virudhunagar | 35.725 | |
| MDR640 | OSM | Muthupet - Voimedu Road | Tiruvarur, Nagapattinam | 23.10 | |
| MDR642 | OSM | N.C.Veeralore Road | Tiruvannamalai | 18.40 | |
| MDR643 | OSM | Natchikulam - Nilakottai - Sempatti Road | Dindigul | 29.60 | Road ends with KM 10/0 chainage joining the same road which begins from end of another MDR with chainage from KM 10/0 |
| MDR644 | OSM | Natham - Pillaiyarnatham Road | Dindigul | 32.80 | KM 0/0 to KM 8/6 is converted into NH. |
| MDR645 | OSM | Nochilli Road | Tiruvallur | 12.80 | |
| MDR646 | | Omalur Main Road | | 2.40 | Upgraded as SH218 |
| MDR647 | OSM | Padamathur - Thiruppachethi Road | Sivagangai | 10.00 | |
| MDR648 | OSM | Palaviduthi - Kadavur - Ayyalur Road | Karur, Palani | 24.854 | |
| MDR649 | OSM | Palayam - Uppukottai Road | Theni | 0.80 | KM 0/8 to KM 19/2 upgraded as SH229 |
| MDR650 | OSM | Pallapatti - Aravakurichy - Esanatham - Gujiliamparai Road | Karur, Palani | 29.128 | |
| MDR651 | OSM | Pallur - Sogandy Road | Chengalpattu | 23.80 | |
| MDR652 | OSM | Paramakudi - Keerandai Road | Ramanathapuram | 34.46 | |
| MDR653 | OSM | Pattukottai - Peravurani - Aranthangi Road | Thanjavur, Pudukkottai | 44.20 | |
| MDR654 | OSM | Pennagaram - Nagamarai Road | Dharmapuri | 29.60 | |
| MDR655 | OSM | Pension Line Road | Salem | 0.93 | |
| MDR656 | | Periyakulam - Devedhanapatti Road | | 8.60 | Merged with MDR903 |
| MDR657 | OSM | Perundalaiyur - Kavandapady - Getticheiyur Road | Gopichettipalayam, Erode | 29.80 | |
| MDR658 | OSM | Pettavaithalai - Nangavaram - Kavalkaranpatty Road | Karur | 26.40 | |
| MDR659 | | Polur - Jamunamarathur - Alangayam - Vaniyambadi Road | | 81.80 | Upgraded as SH215 |
| MDR660 | | Hill Round Road | | 5.20 | Upgraded as SH231 |
| MDR662 | OSM | Puduchathiram - Portonovo Road | Cuddalore | 6.55 | KM 26/6 to KM 33/15 |
| MDR663 | OSM | Pudukkottai - Arimalam - Embal Road | Pudukkottai | 46.00 | |
| MDR664 | OSM | Pudukkottai - Killukkottai - Manayeripatti Road | Pudukkottai, Thanjavur | 41.70 | |
| MDR665 | OSM | Pudukkottai - Manapparai Road | Pudukkottai | 48.20 | |
| MDR666 | | Pudupadi - Illuppai - Vadailluppai - Perumbakkam - Vishar - Kancheepuram Road | | 37.60 | Upgraded as SH116A |
| MDR667 | OSM | Andipatty - Pullimancombai Road | Theni | 15.00 | MDR till KM 15/0 from Dindigul district border it is ODR |
| MDR668 | OSM | Punnam - Pugalur Road | Karur | 8.60 | |
| MDR669 | OSM | Puthiragoundampalayam - Panmadal - Edapatty Road | Salem | 14.60 | |
| MDR670 | OSM | Puthur - Pudupattinam - Palaiyar Road | Nagapattinam | 19.20 | |
| MDR672 | OSM | Rishivandhiyam - Eraiyur - Nemili Road | Kallakurichi | 27.85 | |
| MDR673 | OSM | KM 2/10 of Arisipalayam to Cherring Cross Road - Chinneri Vayakadu Road | Salem | 0.30 | |
| MDR674 | | Salem Steel Plant Road | | 11.50 | Upgraded as SH219 |
| MDR675 | OSM | Salem - Veeranam Road | Salem | 9.60 | KM 0/8 to KM 10/4 |
| MDR676 | OSM | Sangarapuram - Chinnamanur Road | Theni | 11.20 | |
| MDR677 | | Sankari - Edappady Road | | 13.20 | Upgraded as SH220 |
| MDR678 | OSM | Saravanampatty - Thennampalayam Road | Coimbatore | 17.20 | |
| MDR679 | OSM | Sathy - Periyakodivery - Kadambur Road | Gopichettipalayam | 29.10 | |
| MDR680 | OSM | Sattanathapuram - Thiruvenkadu - Melaiyur Road | Nagapattinam | 12.80 | |
| MDR681 | OSM | Sattur - Elayirampannai - Guhanparai Road | Virudhunagar | 22.211 | |
| MDR682 | OSM | Sattur - Nenmeni - Nagalapuram Road | Virudhunagar | 13.25 | MDR till KM 13/25 at Tuticorin District border ODR terminates |
| MDR683 | OSM | Sattur - Thiruvenkatapuram Road | Virudhunagar | 31.55 | at KM 31/55 another ODR terminates |
| MDR684 | OSM | Sendurai - Udayarpalayam - Anaikarai Road | Ariyalur | 38.80 | |
| MDR685 | OSM | Sengathalai Bridge - Vedaranyam Road | Nagapattinam | 21.20 | |
| MDR686 | OSM | Singaperumalkoil - Reddikuppam Road | Chengalpattu | 13.20 | |
| MDR687 | OSM | Sitharevu - Chinnalapatty Road | Dindigul | 20.20 | |
| MDR688 | OSM | Sivagiri - Nathakadaiyur - Muthur Road | Tiruppur, Dharapuram | 34.60 | |
| MDR689 | OSM | Sivakasi - Erichanatham Road | Virudhunagar | 19.80 | |
| MDR690 | OSM | Solakadu - Semmedu - Vilaram - Semmedu Road | Namakkal | 43.20 | |
| MDR691 | OSM | Soundirapuram - Anankur - Kannivadi Road | Karur, Dharapuram | 20.00 | |
| MDR692 | OSM | South Car Street - Bus Stand Road | Virudhunagar | 1.00 | Approximate road chosen |
| MDR693 | OSM | South Car Street | Virudhunagar | 0.42 | |
| MDR694 | OSM | Sulthanbathery - Cherambadi Road | Udhagai | 9.40 | MDR from KM 11/0 to KM 20/4, continues from another MDR at Kerala state border |
| MDR695 | OSM | Sundaraperumalkovil - Maruthanallur Road | Thanjavur | 9.80 | |
| MDR696 | OSM | Suramangalam - Muthanaickenpatty - Omalur Road | Salem, Edappadi | 13.80 | |
| MDR697 | OSM | Tenkasi - Tirumangalam Road to Keelarajakularaman | Virudhunagar | 9.20 | |
| MDR698 | OSM | Tenkasi - Tirumangalam Road to Sholapuram | Virudhunagar | 10.40 | |
| MDR700 | OSM | Thalaikundha - Kallatty - Theppakadu Road | Udhagai | 29.20 | |

### MDR 701 to MDR 800

| Road number | OSM relation | Name of road | Division | Length (in km) | Remarks |
| MDR701 | OSM | Thalaivasal - Veeraganur Road | Salem | 13.00 | |
| MDR703 | OSM | Thally - Jawalagiri Road | Krishnagiri | 11.20 | MDR till KM 11/2, at Karnataka state border other road joins |
| MDR705 | OSM | Thanjavur - Karambakudi - Seethambalpuram Road | Thanjavur, Pudukkottai | 56.60 | |
| MDR706 | OSM | Thanjavur - Periyakangeyanpatti Road | Thanjavur | 26.60 | |
| MDR707 | | Tharamangalam - Nangavalli - Kunchandiyur Road | | 19.60 | Upgraded as SH223 |
| MDR708 | OSM | Tharangambadi - Manganallur - Aduthurai Road | Nagapattinam, Thanjavur | 42.20 | |
| MDR709 | OSM | Thavasi - Vallam Road | Cheyyar | 19.40 | |
| MDR710 | OSM | Thellar - Mazhayur Road | Cheyyar | 15.20 | |
| MDR711 | | Theni - Venkatachalapuram Road | | 10.70 | Upgraded as SH227 |
| MDR712 | OSM | Theni Bypass Road | Theni | 4.40 | |
| MDR713 | OSM | Thennampalayam - Vagarayampalayam - Annur Road | Coimbatore | 20.00 | |
| MDR714 | OSM | Timiri - Kalavai Road | Vellore | 14.20 | |
| MDR715 | OSM | Thiruppathur - Alangudi Road | Sivagangai | 17.00 | |
| MDR716 | OSM | Tirupattur - Natrampalli Road | Vaniyambadi | 14.80 | |
| MDR717 | OSM | Thiruppullani - Pirappanvalasai Road | Ramanathapuram | 25.683 | |
| MDR718 | OSM | Thiruppuvanam - Pulvaikarai - Narikudi Road | Sivagangai, Virudhunagar | 33.80 | |
| MDR719 | OSM | Tiruttani - Nagalapuram Road | Tiruvallur | 14.565 | Up to Andhra Pradesh border |
| MDR720 | OSM | Thittai - Dharasuram Road | Thanjavur, Tiruvarur | 31.00 | |
| MDR721 | OSM | Thummakkundu - Ulaipatti Road | Madurai | 22.87 | |
| MDR725 | OSM | Town Railway Station Road | Salem | 1.275 | |
| MDR726 | OSM | Tiruchengode - Komarapalayam Road | Namakkal | 23.40 | |
| MDR728 | OSM | Vairamadai - Thoppampatty - Kuppam Road | Karur | 24.33 | |
| MDR729 | OSM | Vaiyampatty - Konnaiyur Road | Trichy, Pudukkottai | 48.50 | |
| MDR730 | OSM | Valathy - Avalurpet road | Villupuram | 16.40 | |
| MDR730A | OSM | Melmalayanur - Kodukkankuppam - Melsevalampady Road | Villupuram | 9.60 | |
| MDR732 | OSM | Varatharajanagar - Renganathapuram Road | Theni | 13.80 | |
| MDR733 | OSM | Vathalagundu - Thandigudi Road | Dindigul | 40.90 | |
| MDR734 | OSM | Veerapandi - Nagalapuram Road | Theni | 10.37 | KM 4/83 to KM 15/2, KM 0/0 to KM 4/83 upgraded as SH229 |
| MDR735 | OSM | Veerapandi - Seeppalakottai Road | Theni | 7.20 | KM 0/0 to KM 7/2, KM 7/2 to KM 16/52 upgraded as SH227 |
| MDR736 | OSM | Veerapar - Gedilam Road | Kallakurichi | 7.20 | |
| MDR737 | OSM | Velankanni - Vedaranyam Road | Nagapattinam | 34.80 | |
| MDR739 | | Vellemedupettai - Mailam Road | | 21.60 | Upgraded as SH136 |
| MDR740 | OSM | Kannigaipair - Vengal - Seethancheri Road | Tiruvallur | 26.80 | |
| MDR741 | OSM | Veppur - Tholar - Eraiyur Road | Cuddalore | 21.60 | |
| MDR742 | OSM | Veriyappur - Markkampatty Road | Palani | 23.10 | MDR till 23/1, from Karur district border it is ODR |
| MDR743 | OSM | Vilangadu Road | Cheyyar | 15.20 | MDR till KM 15/2, from Kanchipuram district border it is ODR |
| MDR744 | OSM | Vilangudi - T.Palur - Annakaranpettai Road | Ariyalur | 25.80 | |
| MDR745 | OSM | Viralimalai - Kalamavur Road | Pudukkottai | 25.40 | |
| MDR746 | OSM | Vridhachalam - Palakollai Road | Cuddalore, Kallakurichi | 21.60 | |
| MDR748 | OSM | Alankuppam - Avanipur - Konerikuppam Road | Villupuram | 21.00 | |
| MDR749 | OSM | Andimadam - Srimushnam Road | Ariyalur | 4.80 | MDR till KM 4/8, from Cuddalure district border it is ODR |
| MDR751 | OSM | Arni - Padavedu Road | Cheyyar, Tiruvannamalai | 19.80 | |
| MDR753 | OSM | Kodavasal - Valangaiman - Papanasam Road | Tiruvarur | 23.20 | |
| MDR754 | OSM | Kundarapalli - Veppanapalli Road | Krishnagiri | 0.40 | KM 16/0 to KM 16/4, KM 0/0 to KM 16/0 upgraded as SH226 |
| MDR762 | OSM | Andipandal - Nannilam Road | Tiruvarur | 5.80 | |
| MDR763 | OSM | Andipatty - Jeyamangalam Road | Theni | 6.60 | MDR till KM 6/6, from there it is SH |
| MDR764 | | Avinashi - Puliyampatty Road | | 21.50 | Upgraded as SH166 |
| MDR765 | OSM | Bhavani - Chellampalayam Road | Erode | 0.20 | |
| MDR766 | OSM | Chinnadharapuram - Aravakurichi Road | Dharapuram, Karur | 11.49 | |
| MDR767 | | Edappady - Jalagandapuram - Mecheri Road | | 31.41 | Upgraded as SH220 |
| MDR768 | | Kallikudi - Thiruchuli - Kamuthi - Kariyapatti Road | | 73.30 | KM 15/0 to KM 88/3, upgraded as SH154 |
| MDR769 | OSM | T.Kallupatti - Saptur Road | Madurai | 9.20 | MDR from KM 7/4 to 16/6, till KM 7/4 it is SH, from 16/6 it is ODR |
| MDR770 | | Kancheepuram - Thiruvathipuram Road | | 17.20 | KM 13/0 to KM 30/2, upgraded as SH5A |
| MDR772 | OSM | Karur - Vangal Road | Karur | 11.40 | |
| MDR773 | OSM | Kottur - Meenamanallur - Senganthi Road | Tiruvarur | 14.20 | |
| MDR777 | OSM | Mookanur - Harur Road | Dharmapuri | 25.60 | |
| MDR778 | OSM | Pappanadu - Madhukkur - Perugavalanthan Road | Thanjavur, Tiruvarur | 26.45 | |
| MDR779 | OSM | Thamaraikulam Road | Nagercoil | 6.00 | |
| MDR781 | OSM | Tiruvallur - Karasangal Road | Chengalpattu | 3.60 | KM 31/4 - KM 35/0 |
| MDR782 | OSM | Thoghur - Ayyampettai Road | Thanjavur | 42.20 | |
| MDR783 | OSM | Tiruchendur - Kanyakumari Road | Tuticorin, Tirunelveli | 5.40 | KM 11/4 to KM 15/0 and KM 102/65 to KM 104/45 |
| MDR784 | OSM | Thirukovilur - Thiyagadurgam Road | Kallakurichi | 17.40 | SH till KM 14/2, MDR from KM 14/2 to KM 31/6 |
| MDR786 | OSM | Pennalurpet Road | Tiruvallur | 8.00 | |
| MDR787 | OSM | Goonipalayam - Placepalayam Road | Tiruvallur | 12.80 | |
| MDR788 | OSM | Athimanjeri – Podaturpet – Nagari R.S. Road | Tiruvallur | 14.20 | Up to Andhra Pradesh border |
| MDR789 | OSM | Thirumukkudal - Nelvoy - Thirukazhukundram Road | Chengalpattu | 48.00 | |
| MDR790 | OSM | Perungalathur - Kolapakkam Road | Chengalpattu | 5.20 | |
| MDR791 | OSM | Kancheepuram - Rajakulam Road | Chengalpattu | 9.18 | |
| MDR792 | OSM | Kilveethi - Minnal - Ameerpet Road | Vellore | 25.00 | |
| MDR793 | OSM | Panapakkam - Ganapathipuram - Thakkolam Road | Vellore | 22.20 | |
| MDR794 | OSM | Ayal - Anvarthikanpet Road | Vellore | 11.80 | |
| MDR795 | OSM | Muppaduvetti - Kaniyanur Road | Vellore | 11.60 | |
| MDR797 | OSM | BHEL Feeder Road | Vellore | 4.40 | |
| MDR798 | OSM | Delhigate Road | Vellore | 2.80 | |
| MDR799 | OSM | Kelly's Road | Vellore | 1.80 | |
| MDR800 | OSM | Ammapalayam - Pudupalayam Road | Tiruvannamalai | 11.20 | |

### MDR 801 to MDR 900

| Road number | OSM relation | Name of road | Division | Length (in km) | Remarks |
| MDR801 | OSM | Vadamathimangalam - Kommanandal Road | Tiruvannamalai | 17.00 | |
| MDR802 | OSM | Kalavai - Vazhapandal Road | Cheyyar | 4.80 | Extension to SH123 (KM 20/0 to KM 4/8) |
| MDR803 | OSM | Verayur - Thandarai Road | Tiruvannamalai | 9.80 | |
| MDR804 | OSM | Kozhapalur - Avaniyapuram Road | Cheyyar | 9.90 | |
| MDR805 | OSM | Radhapuram - Vanapuram Road | Tiruvannamalai | 7.80 | |
| MDR806 | OSM | Kalasapakkam - Melarni Road | Tiruvannamalai | 6.80 | |
| MDR807 | OSM | Soorapattu - Anandapuram - Athiyur - Ottampattu Road | Villupuram | 25.30 | |
| MDR808 | OSM | Perumpakkam - Tiruvakkarai - Kodukkur Road | Villupuram | 9.94 | |
| MDR809 | OSM | Vellimalai - Moolakadu - Pudhur Road | Kallakurichi | 62.80 | |
| MDR810 | OSM | Kachirapalayam - Vellimalai Road | Kallakurichi | 32.20 | |
| MDR811 | OSM | Thiyagadurgam - Adari Road | Kallakurichi, Cuddalore | 24.20 | |
| MDR812 | OSM | Thirukovilur - Vettavalam Road | Kallakurichi, Tiruvannamalai | 15.60 | |
| MDR813 | OSM | Chinnayampettai - Elayankanni Road | Tiruvannamalai, Kallakurichi | 20.40 | |
| MDR814 | OSM | Thittagudy - Avatti - Sirupakkam Road | Cuddalore | 31.60 | |
| MDR815 | OSM | Vridhachalam - Kattugudalore Road | Cuddalore | 19.60 | |
| MDR816 | OSM | Bhuvanagiri - Kurinjipady Road | Cuddalore | 18.00 | |
| MDR817 | OSM | Kumaragudy - Nachiyarpettai Road | Cuddalore | 10.00 | |
| MDR818 | OSM | Alathur - Ariyalur Road | Perambalur | 29.80 | |
| MDR819 | OSM | Krishnapuram - Poolambadi - Veeraganur Road | Perambalur, Salem | 21.80 | |
| MDR820 | OSM | Veppanthattai - Neikuppai - GST Road | Perambalur | 20.80 | |
| MDR821 | OSM | Cavery South Bank Road | Trichy | 8.525 | |
| MDR822 | OSM | Cauvery Left Bank Road | Trichy | 14.10 | |
| MDR823 | OSM | Samayapuram - Thirupanjili - Keelakannukulam Road | Trichy | 18.60 | |
| MDR824 | OSM | Thiruverambur - Suriyur Road | Trichy | 15.40 | |
| MDR825 | OSM | Keeranur - Adhanakottai Road | Pudukkottai | 24.20 | |
| MDR826 | OSM | Illuppur - Mathur Road | Pudukkottai | 29.20 | |
| MDR827 | OSM | Perumanadu - Konnaiyur Road | Pudukkottai | 20.70 | |
| MDR827A | OSM | Arasamalai - Palakurichi Road | Pudukkottai | 16.40 | MDR till KM 16/4, from Trichy district border it is ODR |
| MDR828 | OSM | Thiruchitrambalam - Andikkadu Road | Thanjavur | 14.277 | |
| MDR829 | OSM | Thiruchitrambalam - Mavadukuruchi Road | Thanjavur | 8.80 | |
| MDR830 | OSM | Kathiramangalam - Pandanallur Road | Thanjavur | 8.20 | |
| MDR831 | OSM | Thiruvidaimarudur - Thirunageswaram - Thirunaraiyur Road | Thanjavur | 9.20 | |
| MDR832 | OSM | Maruthanallur - Annal Agraharam Road | Thanjavur | 5.20 | |
| MDR833 | OSM | Kunnandarkoil - Sengipatti Road | Pudukkottai, Thanjavur | 18.20 | |
| MDR834 | OSM | Orathanadu - Neyvasal Road | Thanjavur | 10.00 | |
| MDR835 | OSM | Sembodai - Chettipulam - Kariyapattinam Road | Nagapattinam | 13.00 | |
| MDR836 | OSM | Anaikkaranchatram - Mahendrapalli Road | Nagapattinam | 11.48 | |
| MDR837 | OSM | Kuravapulam - Karuppampulam - Kadinelvayal Road | Nagapattinam | 8.90 | |
| MDR838 | OSM | Moolakkarai - Piranthiyankarai - Kariyapattinam Road | Nagapattinam | 7.00 | |
| MDR839 | OSM | Koothanallur - Vedapuram - Thiruthuraipoondi Road | Tiruvarur | 32.90 | |
| MDR840 | OSM | Mannargudi - Thirumakkottai - Chockanavoor Road | Tiruvarur | 20.60 | |
| MDR841 | OSM | Kattokottai - Sadasivapuram - Thidavour Road | Salem | 14.00 | |
| MDR842 | OSM | Hasthampatti - Kannankurichi Road | Salem | 5.40 | |
| MDR843 | OSM | Konganapuram - Vaikundam - Kalipatty Road | Edappadi, Namakkal | 17.00 | |
| MDR844 | OSM | Pudupalayam - Ponnarampatty Road | Salem, Namakkal | 9.60 | |
| MDR845 | OSM | Kuppanur - Kottachedu - Valavanthi Road | Salem | 18.60 | |
| MDR846 | OSM | Manjini - Gangavalli Road | Salem | 5.80 | |
| MDR847 | | Valappady - Belur Road | | 6.40 | Upgraded as SH232 |
| MDR848 | OSM | Thalaivasal - Govindampalayam Road | Salem | 11.92 | |
| MDR849 | OSM | Jalagandapuram - Chinnappampatty Road | Edappadi | 10.80 | |
| MDR850 | OSM | Nalikkalpatty - Uthamasolapuram Road | Salem | 5.93 | |
| MDR851 | OSM | Theevattipatty - Danispet - Boomidi Road | Edappadi | 26.45 | MDR till KM 26/45, from Dharmapuri district border it is ODR |
| MDR852 | OSM | Malayalapatty - Ulipuram -Thammampatty Road | Namakkal, Salem | 9.90 | |
| MDR853 | OSM | Mettala - Mullukurichi - Periyakombai Road | Namakkal | 16.30 | |
| MDR854 | OSM | Chittalandur - Jedarpalayam Road | Namakkal | 10.00 | |
| MDR855 | OSM | Namagiripettai - Ariyagoundampatti - Kallakuruchi Pirivu Road | Namakkal | 7.585 | |
| MDR856 | OSM | Rasipuram - Pudupatti -Namagiripettai Road | Namakkal | 14.80 | KM 1/6 to KM 16/2 |
| MDR857 | OSM | Vaiyappamalai - Velagoundampatti Road | Namakkal | 14.675 | |
| MDR858 | OSM | Mallasamuthiram - Vaiyappamalai Road | Namakkal | 12.275 | |
| MDR859 | OSM | Pennagaram - Mudugampatti - Malaiyanur Road | Dharmapuri | 24.04 | |
| MDR860 | OSM | Bommidi R.S. - Thoppaiyar Road | Dharmapuri | 24.20 | |
| MDR861 | OSM | Kaveripattinam - Palacode Road | Krishnagiri, Dharmapuri | 19.40 | |
| MDR862 | OSM | Kaveripattinam - Pochampalli Road | Krishnagiri | 19.20 | |
| MDR863 | OSM | Jandamedu - Puliyur Road | Krishnagiri | 20.20 | |
| MDR864 | OSM | Arasu Colony - Panjamadevi - Nerur Road | Karur | 8.05 | |
| MDR865 | OSM | Uppidamangalam - Munayanur Road | Karur | 9.417 | |
| MDR866 | OSM | Nangavaram - Perugamani Road | Karur | 2.60 | |
| MDR867 | OSM | Manmangalam - Vangal Road | Karur | 5.80 | |
| MDR868 | OSM | Irumboothipatty - Panjapatty Road | Karur | 11.80 | |
| MDR869 | OSM | Tiruppur - Vanjipalayam - Thekkalur Road | Tiruppur | 12.43 | KM 0/0 to KM 4/93 and KM 5/8 to KM 13/3 |
| MDR871 | OSM | Karaipudur Pirivu - Valaithotathu Ayyan Koil Road | Tiruppur | 6.40 | |
| MDR872 | OSM | Ganapathy - Athipalayam Road | Coimbatore | 9.00 | KM 0/8 to KM 9/8 |
| MDR873 | OSM | Sivanandha Mills - Vilankuruchi Road | Coimbatore | 2.00 | Begins from an unclassified road |
| MDR875 | OSM | Veerapandi - Ugayanur Road | Tiruppur | 8.00 | |
| MDR876 | OSM | Irrutupallam - Poondi Road | Coimbatore | 8.00 | |
| MDR877 | OSM | Thudiyalur - Saravanampatty Road | Coimbatore | 8.20 | |
| MDR878 | OSM | Anupparpalayam - Kaniyampoondi - Vanjipalayam Road | Tiruppur | 7.45 | KM 0/0 to KM 0/85 and KM 1/1 to KM 7/7 |
| MDR879 | OSM | Chinniyampalayam - Ravathur - Somanur Road | Coimbatore | 19.40 | |
| MDR881 | OSM | Senjeri Hills - Mettulakshminaickenpalayam - Vadachittor Road | Pollachi | 17.40 | |
| MDR882 | OSM | Palladam - Boomalur Road | Tiruppur | 12.60 | |
| MDR883 | OSM | Pongalur - Genganaickenpalayam - Mettukadai Road | Tiruppur, Dharapuram | 13.10 | |
| MDR884 | OSM | Dharapuram - Poolavdai Road | Dharapuram | 27.66 | |
| MDR885 | OSM | Pasur R.S. - Elumathur - Vellodu Road | Erode | 27.10 | |
| MDR886 | OSM | Nathakkadaiyur - Uthamapalayam Road | Tiruppur, Dharapuram | 24.80 | KM 0/0 to KM 7/4 and KM 7/8 to KM 25/2 |
| MDR887 | OSM | Uthur - Anankur Road | Dharapuram | 7.20 | |
| MDR888 | OSM | Sathy - Ukkaram - Puliyampatty Road | Gopichettipalayam | 20.00 | |
| MDR888A | OSM | Puliyampatty - Nambiyur Road | Gopichettipalayam | 18.20 | |
| MDR889 | OSM | Puliyampatty - Bhavanisagar - Bannari Road | Gopichettipalayam | 27.00 | KM 0/0 to KM 15/0 and KM 18/0 to KM 30/0, rest is under Bhavanisagar area |
| MDR890 | OSM | Sathy - Kothamangalam Road | Gopichettipalayam | 11.20 | |
| MDR891 | OSM | Perundurai - Kavandapady Road | Erode, Gopichettipalayam | 17.40 | |
| MDR892 | OSM | Melur - Samuthirapatti - Kottaiyur - Aravakurichi Road | Madurai, Dindigul | 42.60 | |
| MDR893 | OSM | Kadachanendal - Thiruvathavour Road | Madurai | 17.80 | |
| MDR894 | | Samayanallur - Melakkal Road | | 5.59 | Upgraded as SH73A |
| MDR895 | OSM | Koodakoil Road | Madurai | 13.40 | |
| MDR896 | OSM | Mulanur - Kilangundal - Moolakadai - Chinniyagoundanvalasu Road | Dharapuram, Palani | 27.39 | |
| MDR897 | OSM | Kodai - Pallangi Road | Dindigul | 9.40 | |
| MDR898 | OSM | Kuttupatti - Seithur - Sendurai Road | Dindigul | 14.80 | KM 0/0 to KM 1/8 is converted into NH |
| MDR899 | OSM | Thuvarankurichy - Kosukurichy Road | Trichy, Dindigul | 13.00 | KM 0/0 to KM 5/2 upgraded as NH785, road terminates at KM 9/0 and chainage begins as KM 9/0 from road splitting at KM 8/6. |
| MDR900 | OSM | Palaya Ayakudi - Porulur Road | Palani | 19.10 | |

### MDR 901 to MDR 1000

| Road number | OSM relation | Name of road | Division | Length (in km) | Remarks |
| MDR901 | OSM | Palani - Kolumam Road | Palani | 13.20 | MDR till KM 13/2, at KM 13/2 another MDR terminates |
| MDR902 | OSM | Vathalagundu - Genguvarpatti Road | Dindigul | 10.00 | |
| MDR903 | OSM | Periyakulam - Jeyamangalam - Eluvanampatti - Palaya Vathalagundu Road | Theni, Dindigul | 31.23 | MDR till 31/23 from there residential road |
| MDR904 | OSM | Pithalaipatti - Palayakannivadi Road | Dindigul | 10.20 | |
| MDR905 | OSM | Reddiarchatram - Kannivadi Road | Dindigul | 7.60 | |
| MDR906 | OSM | Pettai Mettupatti - Nagal Nagar Road | Dindigul | 2.23 | |
| MDR907 | OSM | Reddiarchatram - Karuppimadam Road | Palani | 6.00 | |
| MDR908 | OSM | Kallimandayam - Kothampoondi - Mulanur Road | Palani | 15.20 | MDR till 15/2, from Tiruppur district road another MDR continues |
| MDR909 | OSM | Kedaiyerambu - Edaiyakottai Road | Palani | 9.40 | |
| MDR910 | OSM | Velampatti - Koothampoondi Road | Palani | 19.20 | |
| MDR911 | OSM | Puliyampatty - Salakkadai Road | Palani | 19.40 | MDR till KM 19/4, from Tiruppur district border it is unclassified road |
| MDR912 | OSM | Nattarasankottai - Panangudi - Chokkanathapuram Road | Sivagangai | 23.30 | |
| MDR913 | OSM | Singampunari - V. Pudur Road | Sivagangai | 19.20 | |
| MDR914 | OSM | Pulithipatti - Ponnamaravathy Road | Sivagangai, Pudukkottai | 23.20 | |
| MDR915 | OSM | Ettivayal - Uthiragosamangai - Edambadal Road | Ramanathapuram | 17.20 | |
| MDR915A | OSM | Uthiragosamangai - Thiruppullani Road | Ramanathapuram | 11.08 | KM 0/0 to KM 10/88 and KM 11/21 to KM 11/41, in between there is MDR915B. |
| MDR915B | OSM | Thiruppullani - Sethukarai Road | Ramanathapuram | 5.20 | |
| MDR916 | OSM | Thiruvadanai - S.P Pattinam Road | Ramanathapuram | 23.98 | |
| MDR917 | OSM | Devakottai - Vattanam Road | Sivagangai, Ramanathapuram | 30.89 | |
| MDR918 | OSM | Ramayanpatti Road | Tirunelveli | 1.80 | |
| MDR919 | OSM | Thaneerkulam Branch Road | Tirunelveli | 1.40 | |
| MDR920 | OSM | Veeragavapuram - Melanatham Road | Tirunelveli | 4.73 | |
| MDR921 | OSM | Gopalasamudram Road | Tirunelveli | 3.80 | |
| MDR922 | | Kadayam - Mukkudal Road | | 28.00 | Upgraded as SH40A |
| MDR923 | OSM | Ayikudi - Tenkasi Road | Tenkasi | 5.40 | |
| MDR924 | OSM | Vadakarai - Adavinainar Dam Road | Tenkasi | 6.80 | |
| MDR925 | OSM | Alangulam - Kuruvikulam - Thiruvenkadam Road | Tenkasi | 13.00 | |
| MDR926 | OSM | Kariapatti - Narikudi Road | Virudhunagar | 24.20 | |
| MDR927 | OSM | Vellamadam - Suchindaram Road | Nagercoil | 7.30 | |
| MDR928 | OSM | Parassalai - Kollencode Road | Nagercoil | 7.60 | begins at Kerala state border |
| MDR929 | OSM | Swamiyarmadam -Meycode Road | Nagercoil | 6.90 | |
| MDR930 | OSM | Nagercoil Beach Road | Nagercoil | 8.50 | |
| MDR931 | OSM | Vattakottai - Kottaram - Agasteeswaram Road | Nagercoil | 8.50 | |
| MDR932 | OSM | Mulagumoodu - Colachel Road | Nagercoil | 11.20 | |
| MDR933 | OSM | Thiruvattar - Thirparappu Road | Nagercoil | 7.90 | |
| MDR934 | OSM | Kadayam - Pavoorchatram Road | Tirunelveli, Tenkasi | 13.40 | |
| MDR935 | OSM | Sillanatham - Puthiyamputhur Road | Tuticorin | 11.00 | |
| MDR936 | OSM | Arumuganeri - Veerapandiapattinam Road | Tuticorin | 6.20 | |
| MDR937 | OSM | Melamadai - Palavanatham Road | Virudhunagar | 23.60 | at KM 23/6 an ODR terminates |
| MDR938 | OSM | Thiruthangal - Sengamalanachiyarpuram Road | Virudhunagar | 5.40 | |
| MDR940 | OSM | Vellamadam - Shenbagaramanputhoor Road | Nagercoil | 5.10 | |
| MDR941 | OSM | Kuzhithurai - Alancholai - Arukani Road | Nagercoil | 29.10 | runs till Kerala state border |
| MDR942 | OSM | Lekshmipuram - Mondaikadu Road | Nagercoil | 2.80 | |
| MDR943 | OSM | Eraviputhoorkadai - Karungal Road | Nagercoil | 7.60 | |
| MDR944 | OSM | Thanichiyam - Alanganallur - Vavidamaruthur Road | Madurai | 19.40 | |
| MDR945 | OSM | Thirunagar - Palkalainagar Road | Madurai | 11.60 | |
| MDR946 | OSM | Othakadai - B.Muthupatti Road | Madurai | 10.80 | |
| MDR947 | OSM | Sellur - Kulamangalam Road | Madurai | 8.00 | KM 4/8 to KM 12/8 |
| MDR948 | OSM | Varichiyur - Sakkudi Road | Madurai | 7.00 | |
| MDR949 | OSM | Alagarkoil - Natham Road | Madurai | 4.40 | |
| MDR950 | OSM | Kottanathampatti - Kodukkampatti Road | Madurai | 20.78 | MDR between KM 0/0 to KM 14/18 and KM 14/38 to KM 20/9, from Sivagangai district border it is ODR |
| MDR951 | OSM | Peraiyur - Melapatti Road | Madurai | 6.80 | |
| MDR952 | OSM | Vellaloor - Uranganapatti Road | Madurai | 6.20 | MDR till 6/2, from Sivagangai district border it is ODR |
| MDR953 | OSM | Thirumangalam - Madurai Airport Road | Madurai | 12.10 | |
| MDR954 | OSM | Chithalai - Vagaikulam - Munduvelampatti - Chellampatti Road | Madurai | 19.20 | Road till KM 14/0, then the chainage continues from KM 13/8 of the same road |
| MDR955 | OSM | Kumaram - Sholavandan Road | Madurai | 15.32 | |
| MDR956 | OSM | T.Kallupatti - Virudhunagar Road | Madurai, Virudhunagar | 21.29 | |
| MDR957 | OSM | Kallandiri - Panaikulam Road | Madurai | 13.40 | |
| MDR958 | OSM | Thirumal Road | Madurai | 12.00 | |
| MDR959 | OSM | Thumbaipatti - Jeyankondanilai Road | Madurai | 11.60 | KM 0/0 to KM 8/8 and KM 9/26 to KM 12/06 |
| MDR960 | OSM | Avalsooranpatti - Sennampatti Road | Madurai | 9.603 | |
| MDR961 | OSM | Padeeswaran - Pannikundu Road | Madurai | 10.00 | |
| MDR962 | OSM | Peraiyur - Watrap Road | Madurai | 9.19 | |
| MDR963 | OSM | Sengapadai - Sivarakkottai Road | Madurai | 8.31 | |
| MDR964 | OSM | Bodi - Shanmugasundarapuram Road | Theni | 1.15 | |
| MDR965 | OSM | Pannaipuram - Pulikuthi Road | Theni | 6.60 | |
| MDR966 | OSM | Reddiarchatram - Devinaickenpatti - Kalvarpatty Road | Dindigul, Palani | 28.10 | |
| MDR967 | OSM | Veiladichampatty - Palayakannivady Road | Dindigul | 9.00 | |
| MDR968 | OSM | Veerkkal Road | Dindigul | 5.20 | |
| MDR969 | OSM | Ambathurai - Sempatty Road | Dindigul | 5.20 | |
| MDR970 | OSM | Ambilikkai - Kuthilippai Road | Palani | 11.40 | |
| MDR971 | OSM | Chatirapatty - 19 Pudur - Devathur Road | Palani | 9.57 | |
| MDR972 | OSM | Aralikottai - Keelavalavu Road | Sivagangai | 13.40 | |
| MDR973 | OSM | Devakottai - Kannankudi - Pudukkottai District Border Road | Sivagangai | 24.20 | |
| MDR974 | OSM | Karaikudi - Soorakudi Road | Sivagangai | 4.40 | |
| MDR975 | OSM | Thayamangalam Road | Sivagangai | 7.20 | |
| MDR976 | OSM | Mudukulathur - Sikkal Road | Ramanathapuram | 20.073 | |
| MDR977 | OSM | Ganapathy - Nanjegoundanpudur - Kanuvai Road | Coimbatore | 9.80 | |
| MDR978 | OSM | Thudiyalur - Chinnathadagam Road | Coimbatore | 9.60 | |
| MDR979 | OSM | Karamadai - Sirumugai Road | Coimbatore | 9.60 | |
| MDR980 | | Chitra - Kurumbapalayam Road | | 8.61 | Upgraded as SH233 |
| MDR981 | OSM | Kanthegoundanchavadi - Velanthavalum Road | Coimbatore | 8.20 | |
| MDR982 | OSM | Kaundampalayam - Vadavalli - Onappalayam Road | Coimbatore | 10.80 | |
| MDR983 | OSM | Kuppadampalayam - Ganapathypalayam - Singanur Road | Tiruppur | 10.60 | |
| MDR984 | OSM | Thudiyalur - Maruthamalai Road | Coimbatore | 10.20 | |
| MDR985 | OSM | KM 331/6 of Nagapattinam-Mysore Road - Pappampatty Road | Coimbatore | 6.80 | |
| MDR986 | OSM | Singanallur - Peelamedu Road | Coimbatore | 3.00 | |
| MDR987 | OSM | Ganapathy - Avarampalayam Road | Coimbatore | 1.06 | MDR till KM 1/06, then unclassified road continues |
| MDR988 | OSM | Kinathukadavu - Cochin Frontier Road | Pollachi | 14.10 | MDR till KM 14/1, from Kerala state border it is unclassified road |
| MDR989 | OSM | Akkaraipalayam - Kariyur Road | Dharapuram | 13.60 | |
| MDR990 | OSM | Perundurai R.S. - Arachalur Road | Erode | 13.00 | |
| MDR991 | OSM | Kallimandayam - Kothampoondi - Mulanur Road | Dharapuram | 7.00 | KM 15/2 to KM 22/2, at Dindigul district border another MDR joins |
| MDR992 | OSM | Kangayam Bypass Road | Tiruppur | 1.31 | |
| MDR993 | OSM | Uthiyur - Dasanaickenpatti Road | Tiruppur, Dharapuram | 17.80 | |
| MDR994 | OSM | Doddabetta - Iduhatty - Kattabettu Road | Udhagai | 21.80 | |
| MDR995 | OSM | Kotagiri - Kodanadu View Point Road | Udhagai | 16.60 | |
| MDR996 | OSM | Alagapuram Road | Salem | 2.60 | |
| MDR997 | OSM | Erode Privu Road - Sankari R.S. Road | Salem | 3.20 | |
| MDR998 | OSM | Paramathy - Jedarpalayam Road | Namakkal | 14.40 | |
| MDR999 | OSM | Mohanur - Oruvandur Road | Namakkal | 7.60 | MDR till KM 7/6, at Trichy district border ODR terminates |
| MDR1000 | | Veppanapalli - Theertham Road | | 12.40 | Upgraded as SH226 |

### MDR 1001 to MDR 1100

| Road number | OSM relation | Name of road | Division | Length (in km) | Remarks |
| MDR1001 | OSM | Kurubarapalli - Kothakrishnapalli Road | Krishnagiri | 17.40 | |
| MDR1002 | OSM | Ayyarmalai - Valayapatty - Kumaramangalam Road | Karur | 13.40 | |
| MDR1003 | OSM | Velayuthampalayam - Pugalur R.S. Road | Karur | 5.80 | |
| MDR1004 | OSM | Musiri Byepass Road | Trichy | 2.85 | |
| MDR1005 | OSM | Arimalam - Thirumayam Road | Pudukkottai | 17.80 | |
| MDR1006 | OSM | Alangudi - Maramadakki - Kurumbur Road | Pudukkottai | 19.46 | |
| MDR1007 | OSM | Thirumayam - Panayapatti Road | Pudukkottai | 12.00 | |
| MDR1008 | OSM | Poonthottam - Karaikkal Road | Tiruvarur, Nagapattinam | 16.20 | KM 0/0 to KM 14/0, KM 14/6 to KM 15/0, KM 16/0 to KM 17/8 |
| MDR1010 | OSM | Sakkottai - Annal Agharam Road | Thanjavur | 2.80 | |
| MDR1011 | OSM | Velankanni Church Road | Nagapattinam | 2.20 | |
| MDR1011A | OSM | Akkaraipettai - Vadakkupoiyur - Velankanni Road | Nagapattinam | 9.20 | |
| MDR1012 | OSM | Kuravapulam - Thopputhurai Road | Nagapattinam | 7.36 | |
| MDR1013 | OSM | Chinnasalem - Kachirapalayam Road | Kallakurichi | 12.40 | |
| MDR1014 | OSM | Thirukovilur - Manalurpet Road | Kallakurichi | 11.00 | |
| MDR1015 | OSM | Pattampakkam - Maligaimedu - Rajapalayam Road | Cuddalore | 7.63 | |
| MDR1016 | OSM | Beach Road | Cuddalore | 4.30 | |
| MDR1017 | OSM | Kammiyampettai - Semmandalai - Gundusalai Road | Cuddalore | 4.18 | |
| MDR1018 | OSM | Manali - Mathur Road | Tiruvallur | 5.70 | |
| MDR1019 | OSM | Lakshmipuram - Puzhal Road | Tiruvallur | 3.00 | |
| MDR1020 | OSM | Valasaravakkam - Valluvar Nagar - Ramapuram Road | Tiruvallur | 3.00 | |
| MDR1021 | OSM | Maduravoyal - Valasaravakkam Road | Tiruvallur | 2.90 | |
| MDR1022 | OSM | Basin Road | Tiruvallur | 1.80 | |
| MDR1024 | OSM | Ponnerikarai - Paranthur Road | Chengalpattu | 8.20 | |
| MDR1025 | OSM | Railway Road | Chengalpattu | 1.46 | |
| MDR1026 | OSM | Kodambakkam to Sriperumbudur Road - Kolapakkam - Manapakkam Road | Chengalpattu | 5.60 | |
| MDR1027 | OSM | Pudupakkam - Sirucheri Road | Chengalpattu | 6.20 | |
| MDR1028 | OSM | Nelvoy - Pallikonda Road | Vellore | 19.80 | |
| MDR1029 | OSM | Gandhi Nagar Main Road | Vellore | 1.90 | |
| MDR1030 | OSM | Virinjipuram Road | Vellore, Vaniyambadi | 6.00 | |
| MDR1031 | OSM | Srivilliputhur - Thiruvannamalai Road | Virudhunagar | 3.00 | |
| MDR1038 | | Tiruppur Ring Road | | 39.70 | Upgraded as SHN2 |
| MDR1039 | OSM | Chidambaram - Pitchavaram Tourism Road | Cuddalore | 9.80 | KM 3/2 to KM 13/0, KM 0/0 to KM 3/2 upgraded as NH45A |
| MDR1040 | OSM | Coimbatore - Thondamuthur - Narasipuram Road | Coimbatore | 22.00 | |
| MDR1041 | OSM | Minjur – Kattur – Thirupalaivanam Road | Tiruvallur | 17.20 | |
| MDR1042 | OSM | Km.11/8 of SCKAT Road - Vitalapuram - Pudupattinam Road | Chengalpattu | 17.40 | KM 0 - KM 17 and KM 18/4 - KM 18/8 |
| MDR1043 | OSM | Kilvelur - Katchanam Road | Nagapattinam | 20.40 | |
| MDR1044 | OSM | Ayothiyapattinam - Belur - Kilakkadu Road | Salem | 54.60 | |
| MDR1045 | OSM | Chellampalayam - Burgur - Kollegal Road | Erode | 51.20 | Begins at end of SH, MDR till 51/2, from Karnataka state border another road continues |
| MDR1047 | OSM | Kovilpatti - Ottapidaram - Puducottai - Eral - Mukkani Road | Tuticorin | 77.00 | |
| MDR1048 | OSM | Viswanatham - Venkatachalapuram Road | Virudhunagar | 16.125 | |
| MDR1049 | OSM | Kanakammachattiram - Thakkolam Road | Tiruvallur | 18.55 | MDR till KM 18/55, from Vellore district border it is ODR |
| MDR1054 | OSM | Mayiladuthurai - Muthupet Road | Tiruvarur | 2.40 | KM 91/8 to KM 94/2 |
| MDR1055 | OSM | Pattukkottai - Muthupet Road | Tiruvarur | 1.10 | KM 65/9 to KM 67/0 |
| MDR1071 | OSM | Udhagai - Avalanchi - Kundha - Thaishola Road | Udhagai | 42.17 | MDR till KM 42/17, then it is ODR |
| MDR1073 | OSM | Coonoor - Kattabettu Road | Udhagai | 13.80 | |
| MDR1077 | OSM | Udhagai - Kaikatty Road | Udhagai | 15.40 | |
| MDR1081 | OSM | Wellington - Kotagiri Road | Udhagai | 5.20 | KM 3/0 to KM 8/2, till KM 3/0 under Wellington roads |
| MDR1093 | OSM | Dharasuram - Mulayur Road | Thanjavur | 1.20 | |
| MDR1094 | OSM | Alanganallur - Muduvarpatti - Chathiravellalapatti Road | Madurai | 17.20 | |
| MDR1095 | OSM | Palamedu - Vembarali Road | Madurai | 6.60 | |
| MDR1096 | OSM | KM 377/6 of BCC Road - KM1/6 of SH35 Link Road | Dindigul | 1.16 | |
| MDR1097 | OSM | Manjoor - Keelakottai Road | Ramanathapuram | 3.40 | |
| MDR1098 | OSM | Edaiyar Kudiyurppu Road | Ramanathapuram | 0.40 | |
| MDR1099 | OSM | NH 49 Branch at KM 76/262 in Paramakudi Town Area | Ramanathapuram | 0.153 | |
| MDR1100 | OSM | KM 18/10 of Palladam-Cochin Frontier Road - Kalangal - Kasigoundenpudur Road | Coimbatore | 8.40 | |

### MDR 1101 to MDR 1200

| Road number | OSM relation | Name of road | Division | Length (in km) | Remarks |
| MDR1101 | | Thondamuthur - Madampatty Road | | 3.20 | Modified as MDR586 |
| MDR1102 | OSM | Vavipalayam - Uthukuli Road | Tiruppur | 7.40 | |
| MDR1103 | OSM | Andipalayam - Attayampalayam Road | Tiruppur | 5.49 | |
| MDR1104 | OSM | Muthur - Vellakovil - Mulanur Road | Dharapuram | 0.60 | KM 14/6 to KM 15/2, rest is SH |
| MDR1105 | | Kumbakonam - Sirkali Road (Link Road) | | 1.00 | Road modified and Unidentified |
| MDR1106 | | Taramani Link Road | | 3.63 | Upgraded as SH48B |
| MDR1107 | OSM | Sathanur Dam Road | Tiruvannamalai | 5.00 | |
| MDR1108 | OSM | Jaffrabath Road | Vellore | 6.00 | |
| MDR1109 | OSM | Thumberi - Sankarapuram - Diguvapalayam Road | Vaniyambadi | 10.20 | |
| MDR1110 | OSM | Madanur - Gudiyatham Road | Vaniyambadi | 5.40 | |
| MDR1111 | OSM | Jolarpettai – Natrampalli Road | Vaniyambadi | 9.60 | |
| MDR1111A | OSM | Dhamalerimuthur Road | Vaniyambadi | 8.80 | |
| MDR1112 | OSM | KM 4/2 of Tiruvannamalai-Arur Road - KM 12/2 of Thandrampet-Kottakulam Road | Tiruvannamalai | 17.90 | Kilsirupakkam - G.Krishnapuram Road |
| MDR1113 | OSM | Vallam - GST Road | Villupuram | 19.20 | |
| MDR1114 | OSM | Melpattampakkam - Madukarai - Panchamadevi Road | Cuddalore, Villupuram | 15.80 | MDR till KM 9/4 and between 12/3 and 18/5, ODR from KM 9/4 to KM 10/3 and then till 12/3 under Puducherry UT. |
| MDR1115 | OSM | Moratandy - Bommiyampalayam Road | Villupuram | 9.00 | |
| MDR1116 | OSM | Chidambaram - Thandavaransozhaganpettai Road | Cuddalore | 13.80 | |
| MDR1117 | OSM | Nemam - Devangudy Road | Cuddalore | 13.60 | |
| MDR1118 | OSM | Eraiyur - Kandappankurichi - Nallur Road | Cuddalore | 24.50 | |
| MDR1119 | OSM | Pudupettai - Oraiyur - Karumbur - Paithampadi Road | Cuddalore | 15.70 | MDR till KM 15/7, from Cuddalore district border unclassified road |
| MDR1120 | OSM | Alathur - Chettikulam - Senjeri Road | Perambalur | 21.20 | |
| MDR1120A | OSM | Chettikulam - Nakkaselam Road | Perambalur | 7.20 | |
| MDR1121 | OSM | Sendurai - Anganur - Agaramseegur - Thirumandurai Road | Ariyalur, Perambalur | 36.40 | |
| MDR1122 | OSM | Thirumanur - Ellakurichi - Thoothur Road | Ariyalur | 21.49 | |
| MDR1123 | OSM | Eragudy - Alathudaiyanpatty - Puliyancholai Road | Trichy | 14.46 | |
| MDR1124 | OSM | Kajamalai - Mullipatty Road | Trichy | 10.00 | |
| MDR1125 | OSM | Siruthaiyur - Anbil - Sengaraiyur Road | Trichy | 13.60 | |
| MDR1126 | OSM | Mandapam - Kumulur - Peruvalappur Road | Trichy | 10.60 | |
| MDR1127 | OSM | Kamalapuram - Chinnathirupathi - Jodukuli Road | Edappadi | 18.70 | |
| MDR1128 | OSM | Edappadi - Moolapathai - Panikanur Road | Edappadi | 16.20 | |
| MDR1129 | OSM | Koneripatty - Kalvadangam Road | Edappadi | 3.00 | |
| MDR1129A | OSM | Kalvadangam - Poolampatty Road | Edappadi | 7.00 | |
| MDR1129B | OSM | Moolappathai - Kalvadangam Road | Edappadi | 6.40 | |
| MDR1130 | OSM | Chittoor - Pakkanadu - Jalagandapuram Road | Edappadi | 12.745 | |
| MDR1131 | OSM | Nedungulam Ferry Road | Edappadi | 0.40 | |
| MDR1132 | OSM | Tiruchengode - Kokkarayanpettai Road | Namakkal | 14.40 | MDR till KM 14/4, from there ODR runs till Erode district border |
| MDR1133 | OSM | Bargur - Jagadevi Road | Krishnagiri | 8.20 | |
| MDR1134 | OSM | Krishnagiri - Maharajakadai - Kandhikuppam Road | Krishnagiri | 22.60 | KM 0/0 to KM 18/5 and KM 18/9 to KM 23/0. |
| MDR1135 | OSM | Thally - Gummalapuram Road | Krishnagiri | 9.60 | MDR till KM 9/6, at Karnataka state border another road joins |
| MDR1136 | OSM | Athimugam - Perandapalli - Thorapalli Road | Krishnagiri | 23.20 | |
| MDR1137 | OSM | Perundurai - R.S. - Chennimalai Road | Erode | 13.40 | |
| MDR1138 | OSM | Unjalur R.S. - Sivagiri - Vadapalani Road | Erode | 22.00 | |
| MDR1139 | OSM | Kurumbapalayam - Karichipalayam Road | Coimbatore | 12.80 | |
| MDR1140 | OSM | Pethikuttai - Pulliyampatti Road | Coimbatore | 12.20 | |
| MDR1141 | OSM | Karuvalur - Kovilpalayam Road | Tiruppur, Coimbatore | 20.80 | |
| MDR1142 | OSM | Ketty - Palada - Selas Road | Udhagai | 10.40 | |
| MDR1143 | OSM | Sholurmattam Road | Udhagai | 12.00 | MDR till KM 12/0, from there another ODR begins |
| MDR1144 | OSM | Sitharpatty Vilakku - Ganeshapuram - Ambasamuthiram Road | Theni | 11.60 | |
| MDR1145 | OSM | Kanniyappapillaipatty - G.Usilampatty - Gandamanur Road | Theni | 13.60 | |
| MDR1146 | OSM | Periyakulam - Sothuparai Road | Theni | 9.68 | MDR till KM 9/68, from Dindigul district border it is unclassified |
| MDR1147 | OSM | Myladumparai - Vaikkalparai - Thangammalpuram Road | Theni | 14.40 | |
| MDR1148 | OSM | Parali - Lingavadi - Ponthuugampatti Road | Dindigul, Madurai | 7.40 | |
| MDR1149 | OSM | Dindigul - Sirumalai Ghat Road | Dindigul | 22.00 | MDR till KM 22/0, from there it is unclassified |
| MDR1150 | OSM | Palani - Balasamuthiram - Palaru Dam Road | Palani | 7.20 | MDR from KM 0/0 to KM 7/2, at KM 0/0 residential road terminates, from KM 7/2 it is unclassified road |
| MDR1151 | OSM | Devakottai - Muppaiyur Road | Sivagangai | 14.80 | Begins from MDR413 |
| MDR1152 | OSM | Devakottai - A.Pudur Road | Sivagangai | 12.10 | |
| MDR1153 | OSM | Manamadurai - Puliyangulam Road | Sivagangai | 11.20 | |
| MDR1154 | OSM | Veneervaikkal - Manjoor Road | Ramanathapuram | 20.80 | |
| MDR1155 | OSM | Valudur - Periyapattinam Road | Ramanathapuram | 10.20 | |
| MDR1156 | OSM | Keelakidaram - Valinockam Road | Ramanathapuram | 7.80 | |
| MDR1157 | OSM | Alwarkurichi - Karuthapillaiyur Road | Tirunelveli | 9.40 | |
| MDR1158 | OSM | Ambur - Papanasam Road | Tirunelveli | 6.60 | |
| MDR1159 | OSM | Thailapuram - Meignanapuram - Kayamozhi - Gandhipuram Road | Tuticorin | 23.40 | |
| MDR1160 | OSM | Nazareth - Eral Road | Tuticorin | 16.80 | |
| MDR1161 | OSM | Derisanamcode - Surulacode Road | Nagercoil | 10.90 | |
| MDR1162 | OSM | Kadayal - Pechipparai Road | Nagercoil | 7.40 | |
| MDR1163 | OSM | Pallavaram - Thiruneermalai - Thirumudivakkam Road | Chennai City Roads, Chengalpattu | 8.40 | |
| MDR1163 | OSM | Old Batlakundu - Eluvanampatty Road | Theni | 2.20 | KM 13/0 to KM 15/2, begins from another MDR at KM 13/0 |
| MDR1164 | OSM | Tambaram - Somangalam Road | Chennai City Roads, Chengalpattu | 9.60 | |
| MDR1164 | OSM | KM 6/8 of NH 210 to Annanagar Road | Trichy | 4.70 | |
| MDR1165 | OSM | Chettipadu – Nemam Road | Tiruvallur | 7.60 | |
| MDR1166 | OSM | Thiruverkadu - Ambattur Road | Tiruvallur | 9.20 | |
| MDR1167 | OSM | Melpakkam – Kannampalayam Road | Tiruvallur | 7.20 | |
| MDR1167 | OSM | Ilayangudi Bypass Road | Sivagangai | 2.43 | |
| MDR1168 | OSM | Timiri - Kavanur Road | Vellore | 6.20 | |
| MDR1168 | OSM | Periyakulam - Adukkam - Kodaikanal Road | Theni | 10.80 | MDR till 10/8, from Dindigul district border it is ODR |
| MDR1169 | OSM | Perumanam Road | Tiruvannamalai | 8.60 | |
| MDR1170 | OSM | Sathambady - Kaplampady Road | Villupuram | 9.675 | |
| MDR1171 | OSM | Gingee - Vadapalai Road | Villupuram | 12.80 | |
| MDR1172 | OSM | Karunkuzhi - Mettukuppam Road | Cuddalore | 7.15 | |
| MDR1173 | OSM | Mallur - Veerapandy Road | Salem | 9.725 | |
| MDR1174 | OSM | Tholasampatty Road | Edappadi | 9.60 | |
| MDR1174A | OSM | Tholasampatty - Mallappanur Road | Edappadi | 15.80 | |
| MDR1175 | OSM | Karuppur - Vellapatty - Thathiyangarpatty Road | Edappadi | 9.70 | |
| MDR1176 | OSM | Mudalaipatti - Kalinaickanur Road | Namakkal | 11.30 | |
| MDR1177 | OSM | Puthuchathiram - Singalanthapuram Road | Namakkal | 9.82 | |
| MDR1178 | OSM | Vadugapatty - Alanganatham Road | Namakkal | 8.40 | |
| MDR1179 | OSM | Pudukkottai - Valayapatty Road | Namakkal | 8.30 | |
| MDR1180 | OSM | Thanneerpandal - Kambaliyampatti - Lakkamanaickenpalayam Road | Tiruppur | 12.60 | MDR till 12/4, from Dharapuram division border it is ODR |
| MDR1181 | OSM | Thavittupalayam - Appakoodal Road | Erode | 11.80 | |
| MDR1182 | OSM | Kuruchi - Madukkarai - Nachipalayam - Kannamanaickenur Road | Coimbatore, Pollachi | 18.40 | |
| MDR1183 | OSM | Samathur - Devanurpudur road | Pollachi | 10.60 | MDR till 10/6, from Tiruppur district border it is ODR |
| MDR1184 | OSM | Arasur Market - Nambiyur Market Road | Gopichettipalayam | 14.00 | |
| MDR1185 | OSM | Kottur - Kamatchipuram Road | Theni | 8.40 | |
| MDR1186 | OSM | Veerapandi - Koduvilarpatty Road | Theni | 6.60 | |
| MDR1187 | OSM | Ramanaickenpatti - Vadhuvarpatti Road | Virudhunagar | 7.20 | from KM 7/2 it is ODR |
| MDR1188 | OSM | Tenkasi - Sundarapandiyapuram Road | Tenkasi | 9.20 | |
| MDR1189 | OSM | Radhapuram - Irukkanthurai Road | Tirunelveli | 12.20 | |
| MDR1190 | OSM | Monday Market - Mankuzhy - Manavalakurichi Road | Nagercoil | 5.70 | |
| MDR1191 | OSM | Karungal - Colachel Road | Nagercoil | 6.10 | |
| MDR1192 | OSM | Sannasipatty - Sethurapatty - Fathima Nagar Road | Trichy | 9.60 | |
| MDR1193 | OSM | Veliyathur - Okkur Road | Pudukkottai | 10.60 | |
| MDR1194 | OSM | Avudayarkovil - Okkur Road | Pudukkottai | 8.11 | |
| MDR1195 | OSM | Avudayarkoil - Perumaruthur Road | Pudukkottai | 8.00 | ODR joins at KM 8/0 |
| MDR1196 | OSM | Ponnamaravathy - Thirukkalambur Road | Pudukkottai | 12.70 | MDR till KM 12/7, from Sivaganga district border it is ODR |
| MDR1197 | OSM | Vallampudur - Nattani - Thatchankurichi Road | Pudukkottai | 7.40 | MDR till KM 7/4, from Thanjavur district border it is ODR |
| MDR1198 | OSM | Karaiyur - Melathaniyam Road | Pudukkottai | 7.10 | |
| MDR1199 | OSM | Alangudi - Thalainayar - Thalanthiruvasal Road | Nagapattinam | 12.00 | |
| | | | Total | 11639.301 | |