North American Product Classification System (NAPCS) Canada 2017 Version 1.0
623 - Infrastructure
This group comprises infrastructure such as highways, bridges, pipelines, nuclear power plants, water filtration plants and mine structures.
62311 - Highways, roads, streets, bridges and tunnels
This class comprises highways, roads, streets, bridges, and tunnels.
623113 - Tunnels
This subclass comprises tunnels.
6231131 - Tunnels
Tunnels.
Illustrative example(s)
- canal tunnels
- road tunnels
- subway tunnels
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