For implementing the World Bank backed Rs 8,583-crore road infrastructure project, the State government has allocated Rs 65 crore to prepare a detailed project report (DPR). The State Principal Secretary of Highways and Minor Ports Rajeev Ranjan said that the DPR was still being prepared for the 1,678-km road development project across the State under the public-private partnership (PPP) mode.    He was delivering a special address at the inaugural session of Suminfra, an event organised by the Confederation of Indian Industry (CII) along with the Tamil Nadu and Kerala governments. The project is likely to be implemented from next year, said Ranjan.    The project involves financial strategies such as tolling of high-density traffic corridors and levy of cess on motor fuel and motor vehicle tax. Ranjan said that the first phase of the Outer Ring Road project has been completed and the second phase of Outer Ring Road from Nemilicheri on NH 205 to Minjur on Tiruvottiyur-Ponneri-Panchetti section has started.    The second phase of the ORR project costs Rs 985.44 crore. He said that the State government was planning to develop six lanes and eight lanes on the Oragadam industrial corridor.