Local over Branch Blackhawk Creek
PoorGrundy County, Iowa · 087170303 · Structure no. 000000000164320
- Built
- 1955
- 70 years old
- Condition
- Poor
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 113 ft
- 2 main spans
- Daily traffic
- 33
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Local over Branch Blackhawk Creek is a steel stringer/multi-beam or girder carrying Local over Branch Blackhawk Creek in Grundy County, Iowa. It was built in 1955, so it is 70 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 33 vehicles a day, roughly 21% of them trucks, projected to reach 33 by 2044. The structure is 113 ft (34.4 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Local over Branch Blackhawk Creek built?
It was built in 1955, making it 70 years old in 2025.
What condition is Local over Branch Blackhawk 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 Local over Branch Blackhawk Creek carry?
About 33 vehicles per day (2022 count), of which roughly 21% are trucks.
How long is Local over Branch Blackhawk Creek?
The structure is 113 ft (34.4 m) long with a longest span of 55 ft (16.8 m) and a deck 22 ft wide.
Who owns Local over Branch Blackhawk Creek?
It is owned by the County Highway Agency.