FM & Nash Trail over Allen Creek
PoorHarrison County, Iowa · 081432604 · Structure no. 000000000179645
- Built
- 1976
- 49 years old
- Condition
- Poor
- inspected November 2024
- Type
- Girder and Floorbeam System
- Steel
- Length
- 67 ft
- 1 main span
- Daily traffic
- 20
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM & Nash Trail over Allen Creek is a steel girder and floorbeam system carrying FM & Nash Trail over Allen Creek in Harrison County, Iowa. It was built in 1976, so it is 49 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 20 vehicles a day, projected to reach 20 by 2044. The structure is 67 ft (20.4 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 FM & Nash Trail over Allen Creek built?
It was built in 1976, making it 49 years old in 2025.
What condition is FM & Nash Trail over Allen 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 November 2024.
How much traffic does FM & Nash Trail over Allen Creek carry?
About 20 vehicles per day (2022 count).
How long is FM & Nash Trail over Allen Creek?
The structure is 67 ft (20.4 m) long with a longest span of 65 ft (19.8 m) and a deck 25 ft wide.
Who owns FM & Nash Trail over Allen Creek?
It is owned by the County Highway Agency.