1. METRO RAIL IN CHENNAI
Prepared by
S.PRABHAVARAJAN
LECTURER

2. INTRODUCTION
Chennai Metropolis has been growing rapidly and the traffic volumes on the roads have also been increasing enormously. Hence the need for a new rail based rapid transport system has been felt and towards this objective the Government of Tamil Nadu have decided to implement the Chennai Metro Rail Project. This project aims at providing the people of Chennai with a fast, reliable, convenient, efficient, modern and economical mode of public transport, which is properly integrated with other forms of public and private transport including buses, sub-urban trains and MRTS.

3. INTRODUCTION
The Government of Tamil Nadu created a Special Purpose Vehicle (SPV) for implementing the Chennai Metro Rail Project. This SPV named as "Chennai Metro Rail Limited" was incorporated on under the Companies Act. It has now been converted into a Joint Venture of Government of India and Government of Tamil Nadu with equal equity holding.

4. PLANNING
A total of 7 lines have been planned by the DMRC for the Chennai Metro network. Two routes are currently under construction as part of the first phase, with several planned for future phases of the metro network.
Line 1
Tiruvottiyur
Line 2
Chennai Central
Line 3
Mogappair
Line 4
Porur
Line 5
Ring Road
Line 6
Radhakrishnan Salai
Line 7
Along NH5 Road

5. CONSTRUCTION HISTORY
Construction started on 10 June 2009 with the piling work for the elevated viaduct between Koyambedu and Ashok Nagar stretch.
The construction work on the project was suspended on 9 August 2012, following an accident that killed a worker and injured six others, a day earlier.
The project is estimated to cost around  146 billion (US$2.3 billion) for the two corridors totaling 45 km.
The estimated construction cost of Underground and Elevated Station will be Rs1 billion and Rs3 billion respectively.

6. DESIGN OF METRO CORRIDORS
The lines of Chennai Metro are double-tracked ones. The average height of the tracks will be 12 m, which increases at two points, namely, above the Vadapalani flyover where it reaches about 18 m and over the Kathipara grade separator where the height reaches a maximum of about 25 m. The underground stretch will run at a depth of 17 m below the street level. The Metro corridor accommodates a complex structure over the Kathipara grade separator. Technically called the balanced cantilever, it is a bridge-like structure at a height of about 25 m above the street, connecting the Metro corridor on both sides of the grade separator.

7. PHASES AND TERMINALS Line 1 Washermanpet Line 1 Extension Wimco Nagar
Chennai central

8. Interesting, right?
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