County RD 401 over Alder CR
GoodCedar County, Missouri · S 23 T 35 N R 28 W · Structure no. 30795
- Built
- 2004
- 21 years old
- Condition
- Good
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 60 ft
- 1 main span
- Daily traffic
- 30
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
County RD 401 over Alder CR is a prestressed concrete stringer/multi-beam or girder carrying County RD 401 over Alder CR in Cedar County, Missouri. It was built in 2004, so it is 21 years old, younger than the Missouri average of 45.1 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 38 by 2043. The structure is 60 ft (18.3 m) long and 29 ft wide. If it were closed, the detour would be 8.7 mi (14 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was County RD 401 over Alder CR built?
It was built in 2004, making it 21 years old in 2025.
What condition is County RD 401 over Alder CR 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 2024.
How much traffic does County RD 401 over Alder CR carry?
About 30 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is County RD 401 over Alder CR?
The structure is 60 ft (18.3 m) long with a longest span of 55 ft (16.8 m) and a deck 29 ft wide.
Who owns County RD 401 over Alder CR?
It is owned by the County Highway Agency.