Explanatory Note
Title: Construction of bridges and tunnels
Includes the construction of bridges (includes overpasses), in any material, and tunnels,
including those on motorways and railways.
Does not include:
Installation of lighting and electrical signaling (43210);
Installation of protective guards, traffic signs and similar non-electrical devices (43500);
Architecture and engineering activities (711);
Management and supervision of construction projects (711);
Engineering activities (71120);