Furnace Bridge
Key Takeaway
Furnace Bridge is classified as significant hazard in Wisconsin. It was completed in 1848 and is 178 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 14 ft (taller than 40.1% in WI) |
| Dam Length | 180 ft |
| Dam Type | Gravity |
| Max Storage | 140 acre-ft |
| Normal Storage | 68 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 172 sq mi |
| Max Discharge | 3,413 cfs |
| Year Completed | 1848 (178 years old) |
| NID ID | WI00121 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
City of Mayville
Local Government
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Low Hazard 7 ftFrequently Asked Questions
What is the hazard classification of Furnace Bridge?
Furnace Bridge is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Furnace Bridge?
Furnace Bridge is owned by City of Mayville (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Furnace Bridge built?
Furnace Bridge was completed in 1848, making it 178 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Furnace Bridge?
Furnace Bridge serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Furnace Bridge?
Furnace Bridge has a dam height of 14 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Furnace Bridge last inspected?
Furnace Bridge was last inspected on March 19, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.