Section 15 Base metals and articles of base metal 76 Aluminium and articles thereof 76 10 Aluminium structures and parts of structures; plates, rods... therefor 76 10 90 Bridges and bridge-sections; towers or lattice masts 76 10 90 91 Bridges and bridge-sections; towers or lattice masts Commodity Code Description 76 10 90 91 00 Bridges and bridge-sections; towers or lattice masts