This industry comprises establishments primarily engaged in the construction of highways (including elevated), streets, roads, airport runways, public sidewalks, or bridges. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this group if they are engaged in activities primarily related to highway, street, and bridge construction (e.g., installing guardrails on highways). Illustrative Examples: Airport runway construction Highway line painting Causeway construction Painting traffic lanes or parking lot lines Culverts, highway, road, and street, construction Pothole filling, highway, road, street, or bridge Elevated highway construction Resurfacing, highway, road, street, or bridge Guardrail construction Sign erection, highway, road, street, or bridge Cross-References. Establishments primarily engaged in-- ? Constructing tunnels--are classified in Industry 237990, Other Heavy and Civil Engineering Construction; ? Highway lighting and signal installation--are classified in Industry 238210, Electrical Contractors and Other Wiring Installation Contractors; ? Painting bridges--are classified in Industry 238320, Painting and Wall Covering Contractors; and ? Constructing parking lots, private driveways, sidewalks, or erecting billboards--are classified in Industry 238990, All Other Specialty Trade Contractors.