Centre today approved 13 national highways projects worth of 10,300 crore rupees for six states. The states are Maharashtra, Rajasthan, Chattisgarh, Andhra Pradesh, Tamil Nadu and Madhya Pradesh. Road Transport and Highways Secretary Sanjay Mitra said the projects involve construction of 670 kms roads and most of them are likely to be awarded by the end of next month. <br/><br/>With today's approval, the number of projects cleared by the Ministry in a fortnight have swelled to 31, entailing a total investment of about 28 thousand crore rupees. The government has a target of awarding road contracts of 10 thousand kms for this fiscal and it has already awarded 7 thousand kms. It has already set a target to increase the length of National Highways to 2 lakh kms from the existing 96 thousand kms.