IRB Infrastructure announced an increase in net profit for Q3 to Rs 169 crore for the quarter ended December, compared to Rs 133 crore a year ago, a rise of 27 per cent. The rise is largely due to a surge in the company?s revenue and income from road infrastructure projects. IRB?s income from operations rose by 37 per cent to Rs 1,364 crore against Rs 993 crore.