CPV code 45221100 designates Construction work for bridges in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
45221100 sits under 45221000 (Construction work for bridges and tunnels, shafts and subways) and groups 2 more specific sub-codes. When classifying a tender, choose the narrowest code that still covers the full subject of the contract.