Carthage ST over Drainage
GoodAudubon County, Iowa · 000000000 · Structure no. 000000000004691
- Built
- 1997
- 28 years old
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 72 ft
- 1 main span
- Daily traffic
- 695
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Carthage ST over Drainage is a prestressed concrete stringer/multi-beam or girder carrying Carthage ST over Drainage in Audubon County, Iowa. It was built in 1997, so it is 28 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 695 vehicles a day, projected to reach 695 by 2043. The structure is 72 ft (21.9 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Carthage ST over Drainage built?
It was built in 1997, making it 28 years old in 2025.
What condition is Carthage ST over Drainage 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 May 2023.
How much traffic does Carthage ST over Drainage carry?
About 695 vehicles per day (2022 count).
How long is Carthage ST over Drainage?
The structure is 72 ft (21.9 m) long with a longest span of 71 ft (21.6 m) and a deck 37 ft wide.
Who owns Carthage ST over Drainage?
It is owned by the City or Municipal Highway Agency and maintained by the County Highway Agency.