Raised road to add space to OMR

FOUR-LANE ELEVATED CORRIDOR FROM TARAMANI TO SIRUSERI PLANNED,PROJECT TO BE DONE IN 2 PHASES

After several years of see-sawing,the state government has chosen to build an elevated corridor on Old Mahabalipuram Road (OMR) rather than introduce a bus rapid transport system (BRTS) to ease congestion.

The four-lane elevated corridor is planned from Taramani to Siruseri.With the existing six lanes on OMR,the stretch will get 10 lanes to cater to the growing vehicle population.There are no plans to introduce metro rail,mono rail or MRTS.The elevated stretch has been designed with a technical committee that includes experts from IIT-Madras and Anna University, said a source.

The design for the corridor has been finalised for the stretch between Taramani and Sholinganallur junction.On Monday,chief minister Jayalalithaa announced that the corridor will run up to Siruseri in the first phase,which is about 22km,and from Siruseri to Mamallapuram in the second phase,coming to a total of 45km.When completed,it will be the longest elevated corridor in the country.

Available designs show that the corridor will begin after the MRTS station in Taramani and go over junctions at SRP Tools,Perungudi,Thoraipakkam and Sholinganallur.Those on ground level will not be disturbed, said an engineer familiar with the project.

The corridor will have rotaries to exit OMR.It will be like the rotaries on the Padi flyover so that people can get on or off the elevated corridor at any point, said the engineer.The government has sanctioned 5 crore for a detailed project report that will study the feasibility of the project.Initial estimates suggest that the 22km stretch will cost about 1,500 crore.

Earlier,the government was considering a bus rapid transport system on OMR with a dedicated lane for buses,lanes for pedestrians and cyclists,and a lane for other vehicles.Politicians and bureaucrats visited Ahmedabad to get a sense of how the system works.According to the plan,30% of the 41m OMR was to be dedicated to buses,30% to cyclists and pedestrians and 40% to general traffic.With Mondays announcement,officials seem unclear about the fate of BRTS,which has to be implemented before work begins on the elevated corridor.

Louis Berger Group,a USbased engineering firm,submitted designs for the corridor.Highways department,Chennai Metropolitan Development Authority,Metropolitan Transport Corporation and Tamil Nadu Urban Infrastructure Financial Services are the government bodies that responsible for implementing the project.

RAMPING UP

The government plans to build an elevated corridor on Old Mahabalipuram Road (OMR)

Four-laned elevated corridor between Chennai and Mamallapuram planned in two phases on OMR

At 22km,first phase between Taramani and Siruseri will be longest elevated corridor in the country

Corridor will be in the middle of the road with rotaries at every junction for commuters to enter and exit OMR,similar to Padi flyover.

Designs available for Taramani-Sholinganallur stretch,which will go over junctions at Tidel Park,SRP Tools,Perungudi,Thoraipakkam and Sholinganallur

Design for elevated corridor done by US-based engineering firm Louie Berger Group