a road bridge with supporting structures and metal beams. civil engineering

architecture beam boardwalk bolts building construction corrosion cross beams members engineering equipment forming foundation galvanized girder girders industrial industry infrastructure iron maritime material metal metallic metallurgy metalwork metalworks oxidation pier beach pillar rafter rivets rough rust rusty scaffolding span stainless steel background steelwork strong structural structure superstructure support truss wrought road bridge supporting structures civil transport