Since October 2016, Parks Canada has been undertaking concrete repair work at Nassau Mills Lock 22 on the Trent-Severn Waterway National Historic Site.
The lower approach walls and the pier were formed—and new concrete poured—at the end of February. After this work was complete, gravel and other material was then backfilled up against the repaired walls and new concrete was poured for the decking at the top of the lock walls.