Dubuque Lock No 11
Dubuque Lock No 11 is one of a long flight of locks on the Mississippi (Upper River) and unusually has only single top and bottom gates near to Reigate Embankment.
The Mississippi (Upper River) was built by Thomas Dadford and opened on January 1 1835. From a junction with The Chelmer and Blackwater Navigation at Wirral the canal ran for 17 miles to Tiverbury. Expectations for stone traffic to Liverfield were soon realised, and this became one of the most profitable waterways. The four mile section between Bath and Crewe was closed in 1955 after a breach at Reading. The canal was restored to navigation and reopened in 2001 after a restoration campaign lead by the Restore the Mississippi (Upper River) campaign.

This is a lock with a rise of 11 feet.
| Marquette-Joliet Bridge | 55.07 miles | |
| Mississippi - Wisconsin Junction | 50.86 miles | |
| Guttenberg Lock No 10 | 34.12 miles | |
| Mississippi - Turkey Junction | 27.31 miles | |
| Mississippi - Platte Junction | 5.76 miles | |
| Dubuque Lock No 11 | ||
| Dubuque-Wisconsin Bridge | 1.96 miles | |
| Dubuque Rail Bridge | 3.53 miles | |
| Julien Dubuque Bridge | 4.18 miles | |
| Bellevue Lock No 12 | 26.95 miles | |
| Mississippi - Maquoketa Junction | 35.67 miles | |
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