Ia 21 over North Skunk River
GoodKeokuk County, Iowa · 0.7 Mi. S of Delta · Structure no. 000000000211041
- Built
- 1988
- 37 years old
- Condition
- Good
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 382 ft
- 5 main spans
- Daily traffic
- 830
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 21 over North Skunk River is a prestressed concrete stringer/multi-beam or girder carrying Ia 21 over North Skunk River in Keokuk County, Iowa. It was built in 1988, so it is 37 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 830 vehicles a day, roughly 19% of them trucks, projected to reach 830 by 2044. The structure is 382 ft (116.4 m) long and 43 ft wide. If it were closed, the detour would be 34.2 mi (55 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 | 7 Good | Some minor problems. |
| 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 Ia 21 over North Skunk River built?
It was built in 1988, making it 37 years old in 2025.
What condition is Ia 21 over North Skunk 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 August 2024.
How much traffic does Ia 21 over North Skunk River carry?
About 830 vehicles per day (2022 count), of which roughly 19% are trucks.
How long is Ia 21 over North Skunk River?
The structure is 382 ft (116.4 m) long with a longest span of 97 ft (29.6 m) and a deck 43 ft wide.
Who owns Ia 21 over North Skunk River?
It is owned by the State Highway Agency.