# CanadaBuys #WS5881296127

Design and Construction Services for Nassau Mills Dam Replacement at Lock 22

**Posted:** September 24, 2026
**Respond By:** October 22, 2026
**Identifier:** WS5881296127
**NAICS:** 237990, 237110

Public Services and Procurement Canada (PSPC), under the Department of Public Works and Government Services, is soliciting design and construction services for the replacement of the Nassau Mills Dam at Lock 22, part of the Trent–Severn Waterway National Historic Site.
- Government Buyer:
  - Public Services and Procurement Canada (PSPC)
  - Department of Public Works and Government Services
- OEMs and Vendors:
  - No specific OEMs or vendors are named in the solicitation
- Products/Services Requested:
  - Dam engineering and replacement services
  - Bridge construction and repair
  - Waterproofing agents
  - Referenced UNSPSC codes: 81101507 (Dam engineering), 72141107 (Bridge construction and repair), 12164900 (Waterproofing agents)
- Unique/Notable Requirements:
  - Mandatory site visit for all bidders
  - Strict PPE requirements: hard hats, high-visibility vests, CSA-approved safety footwear, personal flotation devices
  - Pre-registration required for site visit
  - Open competitive bidding process for eligible Ontario-based bidders

### Description

Public Services and Procurement Canada (PSPC) is seeking design and construction services for the replacement of the Nassau Mills Dam at Lock 22 within the Trent–Severn Waterway National Historic Site. The project includes a mandatory site visit on October 15th, 2026, with specific PPE requirements for attendees. Bidders must register prior to the site visit and comply with safety protocols. The procurement is conducted through a competitive open bidding process.

[View original listing](https://canadabuys.canada.ca/en/tender-opportunities/tender-notice/ws5881296127-doc5881315907)