Overhead Bridge Clearances
The following are the heights of the lowest points at the centres of the middle arches in the Port area under which vessels may require to pass.
| Name of Bridge | Height Above | |
| Chart Datum | MHWS | |
| Itchen Bridge | 28.9m | 24.4m |
| Northam Bridge | 9.2m | 4.7m |
| Railway (Itchen) | 9.0m | 4.5m |
| Cobden Bridge | 9.1m | 4.6m |
