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Standard Special Provision 103S57 for OPSS 366 has been prepared to clarify the requirement for repairing concrete pavement and concrete base. As part of the specification publication process, Engineering Materials Office (EMO) Concrete Section and Pavements Section are posting the draft standard special provision for external stakeholder consultation prior to its publication in November 2025.

OPSS 182, SSP 101F23 and CAIS 182 provide guidance to Contractors and Contract Administrators to protect fish and fish habitat from harmful impacts during construction. These documents have been updated based on revised policies and guidance as well as feedback received to provide clearer instruction to users. 

A new standard for stainless drain pipe has been developed for deck drains.

Drainage Section is submitting OPSS.PROV 421 for external stakeholders’ consultation prior to publishing the updated version

A new standard for Buried Approach Slabs has been developed to be used on Integral and semi-integral bridges. Buried approach slabs have been successfully used in Ontario and other jurisdictions.

OPSS 941 has been drafted to replace SSP 599S22 and updated to refer to OPSS 1355 for standard precast concrete requirements and other changes. As part of the specification publication process, Structures Office Foundations Section and EMO Concrete Section are posting the draft specification for external stakeholders’ consultation prior to publication in November 2025.

OPSS 916 has been updated to refer to OPSS 1355 for standard precast concrete requirements and other changes. As part of the specification publication process, Structures Office and EMO Concrete Section are posting the draft specification for external stakeholders’ consultation prior to publication in November 2025.

OPSS 912 has been updated to refer to OPSS 1355 for standard precast concrete requirements and other changes. As part of the specification publication process, Structures Office and EMO Concrete Section are posting the draft specification for external stakeholders’ consultation prior to publication in November 2025.

OPSS 909 has been updated to refer to OPSS 1355 for standard precast concrete requirements and other changes. As part of the specification publication process, Structures Office and EMO Concrete Section are posting the draft specification for external stakeholders’ consultation prior to publication in November 2025.

OPSS 760 has been updated to refer to OPSS 1355 for standard precast concrete requirements and other changes. As part of the specification publication process, Highway Design Office and EMO Concrete Section are posting the draft specification for external stakeholders’ consultation prior to publication in November 2025.

OPSS 740 has been updated to refer to OPSS 1355 for standard precast concrete requirements and other changes. As part of the specification publication process, Highway Design Office and EMO Concrete Section are posting the draft specification for external stakeholders’ consultation prior to publication in November 2025.

OPSS 1355 – Precast Concrete – Materials and Production is a newly developed specification which includes standard requirements for precast concrete. Other construction specifications for precast concrete components, such as OPSS 909 for girders and OPSS 912 for culverts, now refer to OPSS 1355 for the standard precast concrete requirements. As part of the specification publication process, Engineering Materials Office (EMO) Concrete Section is posting the draft specification for external stakeholders’ consultation prior to publication in November 2025.

OPSS 363 has been updated to refer to OPSS 1355 for standard precast concrete requirements and other changes. As part of the specification publication process, Engineering Materials Office (EMO) Concrete Section and Pavements

Drainage Section is submitting OPSS.PROV 410 for external stakeholders’ consultation prior to publishing the updated version of the specification.