On NSE, the shares settled for the day at Rs 302, down 1.95 per cent from the previous close.
The stock fell 1.63 per cent on BSE to end the day at Rs 303.85.
In terms of volume, 3.50 lakh scrips of the firm were traded on NSE and 14,000 shares changed hands on BSE.
"KNR Constructions Ltd has bagged its first Hybrid Annuity Project (HAM) with bid project cost of Rs 1020.60 crore from NHAI for the work of four-laning of Trichy to Kallagam section of NH-227," the company said in a regulatory filing to the BSE.
It added that the project has a concession period of 17 years including construction period of 2 years from the appointed date.