There is some concern about how a pair of Lebreton Flats heritage structures will stand up to ongoing light rail construction.

Sources tell CBC News cracks appeared in the 177-year-old Pooley's Bridge, at the bottom of Commissioner Street, after dynamite blasting for a nearby highrise building.

Construction for Ottawa's LRT line will be happening less than 100 metres away.

Learn more about efforts to protect the bridge and a nearby pumping station by watching Cory O'Kelly's CBC TV report in the video player above.