234120 Bridge and Tunnel Construction
This industry comprises:
- Establishments primarily responsible for the entire construction (i.e.., new work, reconstruction, or repairs) of bridges, viaducts, elevated highways, and tunnels
- Establishments identified as bridge and tunnel construction management firms
- Establishments identified as special trade contractors primarily engaged in performing subcontract work related to bridge and tunnel construction. Establishments in this industry may subcontract some or all of the actual construction work. Kinds of establishments include bridge and tunnel general contractors, design builders, engineer-constructors, and joint-venture contractors.