After rising sharply by 16.26 per cent to Rs 13.15 in intra-day trade, shares of the company finally ended at Rs 12.27, up 8.49 per cent on BSE.
On NSE, the stock gained 8.81 per cent to close at Rs 12.35.
On the volume front, 6.57 lakh shares of the company changed hands at BSE and over 30 lakh at NSE during the day.
Stock markets were closed on Friday for 'Bakr Id'.
The contract has been awarded under phase II of the National Highways Development Project (NHDP).
Gammon India, one of the largest contractors and developers of infrastructure projects in India, operates in four major areas - engineering, procurement and construction, construction business, infrastructure development business and and international business.