| 1/00 | Bridges in general (characterised by their structural type E01D 4/00-E01D 15/00) |
| 2/00 | Bridges characterised by the cross-section of their bearing spanning structure |
| 2/02 | Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type |
| 2/04 | Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type |
| 4/00 | Arch-type bridges |
| 6/00 | Truss-type bridges |
| 6/02 | Truss-type bridges of bowstring type |
| 11/00 | Suspension or cable-stayed bridges |
| 11/02 | Suspension or cable-stayed bridges Suspension bridges |
| 11/04 | Suspension or cable-stayed bridges Cable-stayed bridges |
| 12/00 | Bridges characterised by a combination of structures not covered as a whole by a single one of groups E01D 2/00-E01D 11/00 |
| 15/00 | Movable or portable bridges (arrangement of ship-based outboard ramps or gangways B63B 27/14; loading ramps B65G 69/28); Floating bridges |
| 15/02 | Movable or portable bridges (arrangement of ship-based outboard ramps or gangways B63B 27/14; loading ramps B65G 69/28); Floating bridges Vertical lift bridges |
| 15/04 | Movable or portable bridges (arrangement of ship-based outboard ramps or gangways B63B 27/14; loading ramps B65G 69/28); Floating bridges Swing bridges |
| 15/06 | Movable or portable bridges (arrangement of ship-based outboard ramps or gangways B63B 27/14; loading ramps B65G 69/28); Floating bridges Bascule bridges; Roller bascule bridges, e.g. of Scherzer type |
| 15/08 | Movable or portable bridges (arrangement of ship-based outboard ramps or gangways B63B 27/14; loading ramps B65G 69/28); Floating bridges Bascule bridges; Roller bascule bridges, e.g. of Scherzer type Drawbridges |
| 15/10 | Movable or portable bridges (arrangement of ship-based outboard ramps or gangways B63B 27/14; loading ramps B65G 69/28); Floating bridges Travelling bridges; Sliding bridges; Rotary cylinder bridges, i.e. rotating about longitudinal axis to invert and raise the road |
| 15/12 | Movable or portable bridges (arrangement of ship-based outboard ramps or gangways B63B 27/14; loading ramps B65G 69/28); Floating bridges Portable or sectional bridges (floating bridges E01D 15/14) |
| 15/127 | Movable or portable bridges (arrangement of ship-based outboard ramps or gangways B63B 27/14; loading ramps B65G 69/28); Floating bridges Portable or sectional bridges (floating bridges E01D 15/14) combined with ground-supported vehicles for the transport, handling or placing of such bridges or of sections thereof |
| 15/133 | Movable or portable bridges (arrangement of ship-based outboard ramps or gangways B63B 27/14; loading ramps B65G 69/28); Floating bridges Portable or sectional bridges (floating bridges E01D 15/14) built-up from readily separable standardised sections or elements, e.g. Bailey bridges (E01D 15/127 takes precedence) |