Ia 175 over Branch Blackhawk Creek
FairGrundy County, Iowa · 0.8 Mile W of JCT SR T69 · Structure no. 000000000025941
- Built
- 1977
- 48 years old
- Condition
- Fair
- inspected April 2024
- Type
- Slab
- Concrete Continuous
- Length
- 89 ft
- 3 main spans
- Daily traffic
- 2,120
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 175 over Branch Blackhawk Creek is a concrete continuous slab carrying Ia 175 over Branch Blackhawk Creek in Grundy County, Iowa. It was built in 1977, so it is 48 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 2,120 vehicles a day, roughly 9% of them trucks, projected to reach 2,120 by 2044. The structure is 89 ft (27.1 m) long and 43 ft wide. If it were closed, the detour would be 8.7 mi (14 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Ia 175 over Branch Blackhawk Creek built?
It was built in 1977, making it 48 years old in 2025.
What condition is Ia 175 over Branch Blackhawk Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.
How much traffic does Ia 175 over Branch Blackhawk Creek carry?
About 2,120 vehicles per day (2022 count), of which roughly 9% are trucks.
How long is Ia 175 over Branch Blackhawk Creek?
The structure is 89 ft (27.1 m) long with a longest span of 29 ft (8.8 m) and a deck 43 ft wide.
Who owns Ia 175 over Branch Blackhawk Creek?
It is owned by the State Highway Agency.