Mo 21 S over Trib of Logan CR
FairIron County, Missouri · S 19 T 30 N R 9 E · Structure no. 11751
- Built
- 1996
- 29 years old
- Condition
- Fair
- inspected October 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 25 ft
- 2 main spans
- Daily traffic
- 1,692
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 21 S over Trib of Logan CR is a concrete continuous culvert carrying Mo 21 S over Trib of Logan CR in Iron County, Missouri. It was built in 1996, so it is 29 years old, younger 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 6 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 1,692 vehicles a day, roughly 18% of them trucks, projected to reach 2,538 by 2044. The structure is 25 ft (7.7 m) long. If it were closed, the detour would be 21.7 mi (35 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mo 21 S over Trib of Logan CR built?
It was built in 1996, making it 29 years old in 2025.
What condition is Mo 21 S over Trib of Logan 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 October 2023.
How much traffic does Mo 21 S over Trib of Logan CR carry?
About 1,692 vehicles per day (2024 count), of which roughly 18% are trucks.
How long is Mo 21 S over Trib of Logan CR?
The structure is 25 ft (7.7 m) long with a longest span of 12 ft (3.7 m).
Who owns Mo 21 S over Trib of Logan CR?
It is owned by the State Highway Agency.