US 6 over Des Moines River
FairPolk County, Iowa · 3.6 Miles W of JCT I-235 · Structure no. 000000000040400
- Built
- 1933
- 92 years old, rebuilt 1969
- Condition
- Fair
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 604 ft
- 7 main spans
- Daily traffic
- 22,400
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 6 over Des Moines River is a steel continuous stringer/multi-beam or girder carrying US 6 over Des Moines River in Polk County, Iowa. It was built in 1933 and reconstructed in 1969, so it is 92 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 22,400 vehicles a day, roughly 3% of them trucks, projected to reach 22,400 by 2043. The structure is 604 ft (184.1 m) long and 74 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 6 over Des Moines River built?
It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1969.
What condition is US 6 over Des Moines 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 6 over Des Moines River carry?
About 22,400 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is US 6 over Des Moines River?
The structure is 604 ft (184.1 m) long with a longest span of 110 ft (33.5 m) and a deck 74 ft wide.
Who owns US 6 over Des Moines River?
It is owned by the State Highway Agency.