detail of the guard rail, anti-corrosion galvanized material. constructive detail. galvanized steel structure

guard rail road motorways beams safety traffic dividers galvanisation barrier bolts guardrail news nuts highway accident steel protection crash barriers roadside metal fence street drive construction barricade transportation security danger asphalt railing travel caution roadway design bridge iron structure repair pavement industry zinc prevention infrastructure building safeguarding urban planning detail anti-corrosion galvanized material constructive combines strength balances functionality component supports profiled designed withstand impacts stability special attention weather resistance rounded corners structural continuity reliable visually events