A Detailed Project Report (DPR) relating to the Chennai Metro Rail Project was prepared and submitted by the Delhi Metro Rail Corporation Limited (DMRC) who have successfully designed and implemented the Delhi Metro Rail Project. The DPR envisages the creation of 2 initial corridors under the proposed phase-1 of the Chennai Metro Rail Project as shown below:
| Corridor | Length |
| Washermenpet to Airport | 23.1 kms. |
| Chennai Central to St.Thomas Mount | 22.0 kms. |
| Total | 45.1 kms. |
The details of the two corridors are given below:
Corridor-1:
Washermenpet – Broadway (Prakasam Road) – Chennai Central Station – Rippon Building – along Cooum River – Government Estate – Tarapore Towers – Spencers – Gemini – Anna Salai – Saidapet – Guindy – Chennai Airport.
Corridor-2:
Chennai Central – along EVR Periyar Salai – Vepery – Kilpauk Medical College – Aminjikarai – Shenoy Nagar – Annanagar East – Anna Nagar 2nd avenue – Tirumangalam – Koyambedu – CMBT – along Inner Ring Road – Vadapalani – Ashok Nagar – SIDCO – Alandur – St. Thomas Mount.
The portions of Corridor-1 with a length of 14.3 kms. from Washermanpet to Saidapet, and Corridor-2 with a length of 9.7 kms. from Chennai Central to Anna Nagar 2nd Avenue will be underground and the remainder elevated. The alignment and stations given above are tentative and subject to change during detailed design and execution.
Source: http://chennaimetrorail.gov.in/
