320th Street over Tarkio River
GoodPage County, Iowa · 067383201 · Structure no. 000000000264831
- Built
- 2001
- 24 years old
- Condition
- Good
- inspected October 2022
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 246 ft
- 3 main spans
- Daily traffic
- 29
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
320th Street over Tarkio River is a prestressed concrete stringer/multi-beam or girder carrying 320th Street over Tarkio River in Page County, Iowa. It was built in 2001, so it is 24 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 29 vehicles a day, projected to reach 29 by 2042. The structure is 246 ft (75 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| 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 320th Street over Tarkio River built?
It was built in 2001, making it 24 years old in 2025.
What condition is 320th Street over Tarkio 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 October 2022.
How much traffic does 320th Street over Tarkio River carry?
About 29 vehicles per day (2022 count).
How long is 320th Street over Tarkio River?
The structure is 246 ft (75 m) long with a longest span of 82 ft (25 m) and a deck 27 ft wide.
Who owns 320th Street over Tarkio River?
It is owned by the County Highway Agency.