FM over Black Hawk Creek
PoorGrundy County, Iowa · 087152202 · Structure no. 000000000164001
- Built
- 1973
- 52 years old
- Condition
- Poor
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 246 ft
- 3 main spans
- Daily traffic
- 412
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Black Hawk Creek is a prestressed concrete stringer/multi-beam or girder carrying FM over Black Hawk Creek in Grundy County, Iowa. It was built in 1973, so it is 52 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 412 vehicles a day, roughly 20% of them trucks, projected to reach 412 by 2044. The structure is 246 ft (75 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over Black Hawk Creek built?
It was built in 1973, making it 52 years old in 2025.
What condition is FM over Black Hawk Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.
How much traffic does FM over Black Hawk Creek carry?
About 412 vehicles per day (2022 count), of which roughly 20% are trucks.
How long is FM over Black Hawk Creek?
The structure is 246 ft (75 m) long with a longest span of 80 ft (24.4 m) and a deck 32 ft wide.
Who owns FM over Black Hawk Creek?
It is owned by the County Highway Agency.