General Information
Project Type
| Function / usage: |
Lock |
|---|---|
| Structure: |
Radial gate barrage Roller drum gate barrage |
Location
| Location: |
Quincy, Adams County, Illinois, USA |
|---|---|
| Impounds: |
|
| Coordinates: | 39° 54' 20.29" N 91° 25' 52.26" W |
Technical Information
Dimensions
| crest length | 385.6 m | |
| lock | width | 33.5 m |
| length | 182.9 m |
Excerpt from Wikipedia
Lock and Dam No. 21 is a lock and dam located at Quincy, Illinois on the Upper Mississippi River around river mile 324.9. The movable portion of the dam is 1,265 feet (385.6 m) long and consists of three roller gates and ten tainter gates. A 1,400 feet (426.7 m) long submersible dike continues to the Missouri shore. The main lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long and there is also an incomplete auxiliary lock. In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 21 Historic District, #04000181 covering 1,075 acres (4.4 km²), 1 building, 4 structures, 4 objects.
Text imported from Wikipedia article "Lock and Dam No. 21" and modified on July 23, 2019 according to the CC-BY-SA 4.0 International license.
Participants
Relevant Web Sites
- About this
data sheet - Structure-ID
20030590 - Published on:
24/08/2007 - Last updated on:
05/06/2017
