Nassau Guard Gate during construction
Nassau Mills Lock 22

March 13, 2017 –
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.

With the repairs to the walls now complete, it is expected that the temporary cofferdams will be removed in the coming weeks. The project will then conclude with the restoration of the concrete stairs and the overall site. Some of the work to restore the site will continue into spring, as activities such as replanting, seeding, and sodding are warm weather dependent.

Overall, the work has been progressing well and is on schedule to be completed in time for the 2017 navigation season beginning on the Victoria Day weekend. This 2 year, celebrate with us as we commemorate Canada's 150th anniversary with free lockage!

This project to repair the concrete walls at Nassau Mills Lock 22 is part of Parks Canada’s unprecedented $3 billion dollar investment over 5 years to support infrastructure work to heritage, visitor, waterway and highway assets located within national historic sites, national parks, and national marine conservation areas across Canada. These historic investments will mitigate health and safety risks, halt the loss of nationally significant built heritage and stimulate the economy in communities across the country.

For More Information:

For up-to-date news on infrastructure work along the Trent-Severn Waterway, please visit our website: If you would like to be added to our community engagement list and receive updates on this project, please e-mail and include Nassau Mills Lock 22 in the subject heading.