Industry: 1622—Bridge, Tunnel, and Elevated Highway Construction
General contractors primarily engaged in the construction of bridges; viaducts; elevated highways; and highway, pedestrian, and railway tunnels. General contractors engaged in subway construction are classified in Industry 1629. Special trade contractors primarily engaged in guardrail construction or installation of highway signs is classified in Industry 1611.
Abutment construction—general contractors
Trestle construction—general contractors
Bridge construction—general contractors
Tunnel construction—general contractors
Causeway construction on structural supports—general contractors
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