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INTRODUCTION
 

Tamil Nadu State in India has an extensive road network system.The details are as given below:

CATEGORY OF ROAD

LENGTH (Km)
National Highways (NH) 4,873
State Highways (SH) 9,384
Major District Roads (MDR) 11,288
Other District Roads (ODR) 36,096
Total 61,641
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Different types of Bridges and their numbers:

TYPES OF BRIDGES

NUMBERS

Major Bridges 1318
Minor Bridges 7710
Culverts 103935
Road over bridges in railway level crossings 179
Road under bridges in railway level crossings 57

 

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