Ia 316 over Des Moines River
FairPolk County, Iowa · 3.9 Miles N of JCT Ia 5 · Structure no. 000000000280555
- Built
- 1968
- 57 years old, rebuilt 2015
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 2,139 ft
- 5 main spans
- Daily traffic
- 810
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 316 over Des Moines River is a steel continuous stringer/multi-beam or girder carrying Ia 316 over Des Moines River in Polk County, Iowa. It was built in 1968 and reconstructed in 2015, so it is 57 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 5 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 810 vehicles a day, roughly 11% of them trucks, projected to reach 810 by 2044. The structure is 2,139 ft (652 m) long and 33 ft wide. If it were closed, the detour would be 13 mi (21 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Ia 316 over Des Moines River built?
It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2015.
What condition is Ia 316 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 May 2024.
How much traffic does Ia 316 over Des Moines River carry?
About 810 vehicles per day (2022 count), of which roughly 11% are trucks.
How long is Ia 316 over Des Moines River?
The structure is 2,139 ft (652 m) long with a longest span of 188 ft (57.3 m) and a deck 33 ft wide.
Who owns Ia 316 over Des Moines River?
It is owned by the State Highway Agency.