Itchen Navigation: Distance Table and Dimensions
Dimensions
In its final form the Navigation had 15 locks and 2 half-locks (with a single pair of gates at each) with a combined rise of about 105 feet (32 metres) from mean sea level at Woodmill to Winchester.
The locks were capable of passing boats about 70 feet long with a beam of 13 feet (21.3m x 4.0m). The barges used were capable of carrying between 20 and 45 tons, but, often, poor maintenance of the waterway meant a full cargo could not be carried.
Further information on the locks and barges can be found on this page.
Distance Table
| Place | OS Grid Ref | From Black Bridge | From Northam Quay | ||
|---|---|---|---|---|---|
| Miles | Kms | Miles | Kms | ||
| Black Bridge and Blackbridge Wharf, Winchester | SU485288 | 0.0 | 0.0 | 12.4 | 20.0 |
| Tun Bridge | SU483280 | 0.5 | 0.8 | 11.9 | 19.2 |
| St Catherine Lock | SU480273 | 1.0 | 1.6 | 11.4 | 18.4 |
| Twyford Lane End Lock | SU479265 | 1.5 | 2.5 | 10.9 | 17.5 |
| Junction with main river | SU478264 | 1.6 | 2.6 | 10.8 | 17.4 |
| Tumbling Bay (hatches) | SU478264 | 1.8 | 2.8 | 10.6 | 17.2 |
| Compton Lock | SU476255 | 2.2 | 3.5 | 10.2 | 16.5 |
| Shawford Bridge | SU473249 | 2.6 | 4.2 | 9.8 | 15.8 |
| Shawford Single Gates | SU472248 | 2.7 | 4.3 | 9.7 | 15.7 |
| Malm Bridge | SU471240 | 3.2 | 5.2 | 9.2 | 14.8 |
| Malm Lock | SU471237 | 3.4 | 5.5 | 9.0 | 14.5 |
| College Mead Lock | SU470233 | 3.7 | 6.0 | 8.7 | 14.0 |
| Downs Bridge | SU470233 | 4.2 | 6.7 | 8.2 | 13.3 |
| Brambridge Lock | SU468225 | 4.3 | 7.0 | 8.1 | 13.0 |
| Brambridge (or Kiln Lane) Bridge | SU467224 | 4.4 | 7.1 | 8.0 | 12.9 |
| Brambridge Single Gates | SU466222 | 4.5 | 7.3 | 7.9 | 12.7 |
| Allbrook Lock | SU461211 | 5.3 | 8.5 | 7.1 | 11.5 |
| Ham Bridge | SU467224 | 5.8 | 9.3 | 6.6 | 10.7 |
| Withymead Railway Bridge | SU459204 | 6.0 | 9.7 | 6.4 | 10.3 |
| Withymead Lock | SU461202 | 6.2 | 9.9 | 6.2 | 10.1 |
| Barton Bay (junction with Barton River) | SU463196 | 6.6 | 10.5 | 5.8 | 9.5 |
| Stoke Lock | SU464193 | 6.8 | 10.9 | 5.6 | 9.1 |
| Stoke Bridge, Bishopstoke | SU464191 | 6.9 | 11.1 | 5.5 | 8.9 |
| Conegar Lock | SU465188 | 7.1 | 11.5 | 5.3 | 8.5 |
| Fish House Bay (junction with Barton River) | SU466185 | 7.3 | 11.7 | 5.1 | 8.3 |
| Chicken Hall Railway Bridge | SU466177 | 7.9 | 12.6 | 4.5 | 7.4 |
| Lock House Lock | SU462174 | 8.2 | 13.2 | 4.2 | 6.8 |
| Decoypond Lock | SU455168 | 8.8 | 14.2 | 3.6 | 5.8 |
| Sandy Lock | SU464163 | 9.1 | 14.7 | 3.3 | 5.3 |
| M27 Motorway crossing | SU450159 | 9.6 | 15.5 | 2.8 | 4.5 |
| Mansbridge Lock | SU448157 | 9.7 | 15.6 | 2.7 | 4.4 |
| Mans Bridge (junction with main river, navigable to Gaters Mill) | SU447155 | 9.8 | 15.9 | 2.6 | 4.1 |
| Woodmill Lock | SU439151 | 10.4 | 16.7 | 2.0 | 3.3 |
| Cobden Bridge | SU438140 | 11.3 | 18.2 | 1.1 | 1.8 |
| Northam Quay | SU432128 | 12.4 | 20.0 | 0.0 | 0.0 |
| Place | OS Grid Ref | From Mans Bridge | From Gaters Mill | ||
| Miles | Kms | Miles | Kms | ||
| Mans Bridge (junction with main line of the Navigation) | SU447155 | 0.0 | 0.0 | 0.3 | 0.5 |
| Entrance to Gaters Mill (limit of navigation) | SU453155 | 0.3 | 0.5 | 0.0 | 0.0 |
It should be noted that the above distances relate to length of the Navigation when in use. The M27 Motorway crossing has caused a diversion of the public footpath adding 0.4 miles (0.7 km) to the length of the path.