US 59 over Little Sioux River
FairCherokee County, Iowa · 0.2 Mi. S of SR C38 · Structure no. 000000000019340
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 396 ft
- 5 main spans
- Daily traffic
- 4,510
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 59 over Little Sioux River is a steel continuous stringer/multi-beam or girder carrying US 59 over Little Sioux River in Cherokee County, Iowa. It was built in 1973, so it is 52 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 4,510 vehicles a day, roughly 9% of them trucks, projected to reach 4,510 by 2043. The structure is 396 ft (120.7 m) long and 65 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 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 US 59 over Little Sioux River built?
It was built in 1973, making it 52 years old in 2025.
What condition is US 59 over Little Sioux River 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 2023.
How much traffic does US 59 over Little Sioux River carry?
About 4,510 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is US 59 over Little Sioux River?
The structure is 396 ft (120.7 m) long with a longest span of 85 ft (25.9 m) and a deck 65 ft wide.
Who owns US 59 over Little Sioux River?
It is owned by the State Highway Agency.