Ontario Highway Interchange Locations from Official Road Map

Interchanges on provincial highways and connecting roads are documented for the Official Road Map of Ontario. The dataset is produced by the Government of Ontario and was last updated in March 2026.

Use Cases

• Analyze interchange density per highway segment using the interchange location feature.
• Map connectivity between provincial highways and municipal or US roads using the road type classification.
• Validate or update cartographic representations in official road atlases with the authoritative interchange data.

Strengths

• Includes interchanges on roads outside Ontario and in the United States shown on the ORM.
• Maintained by the authoritative Government of Ontario mapping agency.

Limitations

• Unknown total number of interchange records.
• Geographic scope is biased towards features deemed cartographically significant for the ORM.

Provenance

Source

Government of Ontario

Collection Method

Compiled for cartographic representation on the Official Road Map of Ontario.

Freshness

Updated March 2026.

Geography

Primarily Ontario, with some features in other Canadian regions and the United States.