405th over Little Cedar River
GoodMitchell County, Iowa · 099163503 · Structure no. 000000000248601
- Built
- 1974
- 51 years old
- Condition
- Good
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 170 ft
- 3 main spans
- Daily traffic
- 29
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
405th over Little Cedar River is a prestressed concrete stringer/multi-beam or girder carrying 405th over Little Cedar River in Mitchell County, Iowa. It was built in 1974, so it is 51 years old, older 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 29 vehicles a day, projected to reach 29 by 2043. The structure is 170 ft (51.8 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 405th over Little Cedar River built?
It was built in 1974, making it 51 years old in 2025.
What condition is 405th over Little Cedar 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 December 2023.
How much traffic does 405th over Little Cedar River carry?
About 29 vehicles per day (2022 count).
How long is 405th over Little Cedar River?
The structure is 170 ft (51.8 m) long with a longest span of 57 ft (17.4 m) and a deck 26 ft wide.
Who owns 405th over Little Cedar River?
It is owned by the County Highway Agency.