Industrial Classification By SSIC (2020) Section F : CIVIL ENGINEERING 42 : CIVIL ENGINEERING 42 : CIVIL ENGINEERING 421 : CONSTRUCTION OF ROADS AND RAILWAYS 4210 : Construction of Roads and Railways 42101 : General contractors (non-building construction) 42102 : Road and railway construction 42103 : Bridge, tunnel, viaduct and expressway construction 422 : CONSTRUCTION OF UTILITY PROJECTS 4220 : Construction of Utility Projects 42201 : Water and gas pipe-line and sewer construction 42202 : Communications and power line construction 429 : CONSTRUCTION OF OTHER CIVIL ENGINEERING PROJECTS 4290 : Construction of Other Civil Engineering Projects 42901 : Land reclamation works 42902 : Dam and drainage construction 42903 : Marine construction (e.g. harbours, piers, docks, wharves) 42909 : Construction of other civil engineering projects n.e.c. (e.g. playground systems)