Archived - Standard Industrial Classification - Establishments (SIC-E) 1980

• F - Construction Industries
• 41 - Industrial and Heavy (engineering) Construction Industries
• 412 - Highway and Heavy Construction

4121 - Highways, Streets and Bridges

Establishments primarily engaged in the construction and repair of highways, streets and bridges. Establishments primarily engaged in asphalt paving other than on highways, streets and bridges are classified in 4216 - Asphalt Paving, construction those specializing in steel erection are classified in 4227 - Structural Steel Erection and those primarily engaged in highway, street or bridge maintenance are classified in 4591 - Highway, Street and Bridge Maintenance Industry.