Bridge Dam
Bridge Dam is a gravity dam located in Natrona County, Wyoming, built in 1957. It carries a Low hazard potential classification and has a poor condition assessment.
About Bridge Dam
The primary purpose of Bridge Dam is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Doi Blm (federal). It impounds the Mike Wash.
The dam stands 40 feet tall and stretches 477 feet across, creates a reservoir covering 23 acres, has a maximum storage capacity of 361 acre-feet, and collects water from a drainage area of 16 square miles. Completed in 1957, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 07/20/2017.
At 40 feet, this dam is taller than 87% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Wyoming |
| County | Natrona |
| River/Stream | Mike Wash |
| Coordinates | 43.19270, -107.33278 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 40 ft |
| Dam Length | 477 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 361 acre-ft |
| Max Storage | 361 acre-ft |
| Normal Storage | 44 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 16 sq mi |
| Max Discharge | 470 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | DOI BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 07/20/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01432 |
| Federal ID | WY01432 |
| More Info | State Dam Safety Program |