FM & Austin Ave over Little Sioux River
GoodHarrison County, Iowa · 081452304 · Structure no. 000000000028021
- Built
- 1987
- 38 years old
- Condition
- Good
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 291 ft
- 3 main spans
- Daily traffic
- 396
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
FM & Austin Ave over Little Sioux River is a prestressed concrete stringer/multi-beam or girder carrying FM & Austin Ave over Little Sioux River in Harrison County, Iowa. It was built in 1987, so it is 38 years old, younger than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 396 vehicles a day, roughly 33% of them trucks, projected to reach 396 by 2043. The structure is 291 ft (88.7 m) long and 33 ft wide. If it were closed, the detour would be 19.9 mi (32 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| 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 & Austin Ave over Little Sioux River built?
It was built in 1987, making it 38 years old in 2025.
What condition is FM & Austin Ave over Little Sioux River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.
How much traffic does FM & Austin Ave over Little Sioux River carry?
About 396 vehicles per day (2023 count), of which roughly 33% are trucks.
How long is FM & Austin Ave over Little Sioux River?
The structure is 291 ft (88.7 m) long with a longest span of 95 ft (29 m) and a deck 33 ft wide.
Who owns FM & Austin Ave over Little Sioux River?
It is owned by the County Highway Agency.