This Sub-class includes: •construction of bridges and/or viaducts, including those for expressways •construction of tunnels
•general contractors (non-building construction), see 42101 •road and railway construction, see 42102 •construction of water and gas pipe-lines, see 42201 •construction of communication lines and power lines, see 42202 •construction of playground systems and/or outdoor sports facilities, see 42909 •rental and leasing of construction equipment without operator, see 77330