Madhucon Projects Ltd has announced that the Company has signed a Concession Agreement with NHAI for a longest BOT Project between Madurai and Tuticorin involving Design, Engineering, Finance, Construction, Operation and Maintenance of KM 138.800 to KM 264.500 of NH-45B at a cost of Rs 8200 million with 20 years Concession Period and positive grant of Rs 1450 million.