FM 320th ST over Buffalo Creek
PoorPosted for loadKossuth County, Iowa · 097281201 · Structure no. 000000000215750
- Built
- 1958
- 67 years old, rebuilt 1981
- Condition
- Poor
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 88 ft
- 2 main spans
- Daily traffic
- 309
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
FM 320th ST over Buffalo Creek is a steel stringer/multi-beam or girder carrying FM 320th ST over Buffalo Creek in Kossuth County, Iowa. It was built in 1958 and reconstructed in 1981, so it is 67 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 3 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. Its operating status is: posted for load restriction.
It carries about 309 vehicles a day, roughly 14% of them trucks, projected to reach 309 by 2044. The structure is 88 ft (26.8 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| 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 320th ST over Buffalo Creek built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1981.
What condition is FM 320th ST over Buffalo 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 June 2024.
How much traffic does FM 320th ST over Buffalo Creek carry?
About 309 vehicles per day (2021 count), of which roughly 14% are trucks.
How long is FM 320th ST over Buffalo Creek?
The structure is 88 ft (26.8 m) long with a longest span of 43 ft (13.1 m) and a deck 32 ft wide.
Who owns FM 320th ST over Buffalo Creek?
It is owned by the County Highway Agency.