Lock and Dam No. 11

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Lock and Dam No. 11

Lock and Dam #11 as seen from Eagle Point Park in Dubuque, Iowa.
Official name General Zebulon Pike Lock and Dam No. 11
Location Dubuque, Iowa / Grant County, Wisconsin
Coordinates Coordinates: 42°32′25″N 90°38′39″W / 42.540278°N 90.644167°W / 42.540278; -90.644167
Construction began 1934
Opening date 14 September 1937
Dam and spillways
Length 1,478 ft (450 m)
Impounds Upper Mississippi River
Reservoir
Creates Pool 11
Lock and Dam No. 11 Historic District
Location: 11 Lime St., Dubuque, Iowa
Area: 114.2 acres (46.22 ha)
Built: 1937
Architect: Abbott, Edwin E.; multiple
Architectural style: lock and dam
MPS: Upper Mississippi River 9-Foot Navigation Project MPS
NRHP Reference#: 04000171[1]
Added to NRHP: March 10, 2004

General Zebulon Pike Lock and Dam No. 11 is a lock and dam located between Dubuque, Iowa and rural Grant County, Wisconsin, on the Upper Mississippi River. It was opened to navigation 14 September 1937. The movable portion of the dam is 1,478 feet (450.5 m) long and consists of 13 tainter gates and three roller gates. The non-movable part is a 3,340 feet (1,018.0 m) long non-overflow earthen dam that connects to the Wisconsin shore. The main lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long. There is also an incomplete auxiliary lock.

The lock and dam are listed on the National Register of Historic Places.[1]

Aerial view of Lock and Dam No. 11. View is to the west, looking across to the Iowa side of the river.

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Locks and dams of the Upper Mississippi River
USAFLSAF123455A67891011121314151617181920212224252627
Upstream:
Lock and Dam No. 10
Downstream:
Lock and Dam No. 12
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