Mo 21 S over Whitehead CR
FairJefferson County, Missouri · S 8 T 39 N R 4 E · Structure no. 6034
- Built
- 1946
- 79 years old
- Condition
- Fair
- inspected December 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 24 ft
- 2 main spans
- Daily traffic
- 7,193
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 21 S over Whitehead CR is a concrete continuous culvert carrying Mo 21 S over Whitehead CR in Jefferson County, Missouri. It was built in 1946, so it is 79 years old, older than the Missouri average of 45.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 7,193 vehicles a day, roughly 7% of them trucks, projected to reach 13,307 by 2044. The structure is 24 ft (7.2 m) long. If it were closed, the detour would be 34.8 mi (56 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 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 Mo 21 S over Whitehead CR built?
It was built in 1946, making it 79 years old in 2025.
What condition is Mo 21 S over Whitehead CR in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2024.
How much traffic does Mo 21 S over Whitehead CR carry?
About 7,193 vehicles per day (2024 count), of which roughly 7% are trucks.
How long is Mo 21 S over Whitehead CR?
The structure is 24 ft (7.2 m) long with a longest span of 10 ft (3 m).
Who owns Mo 21 S over Whitehead CR?
It is owned by the State Highway Agency.