# CanadaBuys #4026-E-0015

Ontario engineering design and environmental assessment services retainer

**Posted:** November 09, 2026
**Respond By:** December 03, 2026
**Identifier:** 4026-E-0015
**NAICS:** 541330

Ontario is seeking engineering design and environmental assessment services under a large-value retainer.
- **Government buyer:** Engineering Services - Eastern Region, an Ontario government contracting organization.
- **Services requested:** Preliminary and detailed design, plus environmental assessment for structural rehabilitation or replacement, highway rehabilitation that considers future lanes, and interchange or intersection improvements.
- **OEMs and vendors:** No OEMs, product vendors, or engineering service providers are named in the notice. MERX is identified as the platform for accessing bidding documents; fees may apply.
- **Notable requirements:** Highway rehabilitation planning must consider future lanes. The opportunity is competitive, and solicitation information is available in English and French.

### Description

The solicitation seeks a large-value retainer for preliminary design and environmental assessment services. The scope includes structural rehabilitation or replacement, highway rehabilitation with consideration for future lanes, and interchange or intersection improvements. Bidding documents and full details are available through MERX, where fees may apply. The estimated contract period is listed as 0 months, with a proposed start date of February 7, 2030.

[View original listing](https://canadabuys.canada.ca/en/tender-opportunities/tender-notice/mx-243100801621)