Minister’s Regulation to support Harmonization of Municipal Road Construction Standards​

ERO number
026-0105
Notice type
Bulletin
Posted by
Ministry of Transportation
Bulletin posted
Last updated

This notice is for informational purposes only. There is no requirement to consult on this initiative on the Environmental Registry of Ontario. Learn more about the types of notices on the registry.

Bulletin summary

A Minister’s regulation is being proposed to make certain Ontario Provincial Standards for Municipal Road Construction (OPSS.MUNI) mandatory for municipalities.  

Why consultation isn't required

The Environmental Bill of Rights does not require this notice to be placed on the Environmental Registry. However, we are sharing our Regulatory Registry proposal for a new Minister’s regulation to harmonize municipal road construction standards.

Bulletin details

In November 2025, as part of the Fighting Delays, Building Faster Act 2025 the Public Transportation and Highway Improvement Act (PTHIA) was amended to support the harmonization of municipal road construction standards. A new Minister’s regulation is being proposed to make Ontario Provincial Standards for Municipal Road Construction (OPSS.MUNI) mandatory for municipalities with respect to hot mix asphalt, aggregates, drainage, and general conditions of contract. The proposed regulation would also include provisions for a transition period, a process for exemptions, and reporting requirements for municipalities.

A transition provision is proposed whereby all municipalities would be required to comply with standards listed in the proposed regulation effective July 1, 2027. The remaining OPSS.MUNI standards (e.g., electrical, concrete, metal) are intended to be harmonized through a phased implementation in future proposed regulations.

Details on the proposal can be found at: Regulatory Registry.

Supporting materials

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Some supporting materials may not be available online. If this is the case, you can request to view the materials in person.

Get in touch with the office listed below to find out if materials are available.

Municipal Standards Harmonization Office
Address

95 Arrow Rd Flr 2
Toronto, ON
M9M 2L4
Canada

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MTO ERO

Email address
Office
Environmental Policy Office
Address

438 University Ave
12th Floor
Toronto, ON
M7A 1N3
Canada

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