Parks Canada has awarded the contract for work on Crowe Bay Lock 14, on the Trent River, in Campbellford.
Work includes installation of four mechanized gates, modifications to downstream embankments, installation of a back up generator and improvements to public safety on site.
The bridge leading up to the lock station is also being rebuilt.
Construction activity is set to begin soon on the east side of the river, as crews build a cofferdam upstream of the bridge, to create a dry workspace for the bridge replacement.
Boaters are being asked to follow the guidance of lock staff when mooring at the location when work begins and land-based visitation will be unavailable.