Walnut ST over Unnamed in Simpson
FairPosted for loadLivingston County, Missouri · S 25 T 58 N R 24 W · Structure no. 14972
- Built
- 1940
- 85 years old
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 26 ft
- 1 main span
- Daily traffic
- 200
- 2024 count
- Owner
- Private
- Private (other than railroad)
About this bridge
Walnut ST over Unnamed in Simpson is a steel stringer/multi-beam or girder carrying Walnut ST over Unnamed in Simpson in Livingston County, Missouri. It was built in 1940, so it is 85 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. Its operating status is: posted for load restriction.
It carries about 200 vehicles a day, roughly 10% of them trucks, projected to reach 230 by 2044. The structure is 26 ft (7.9 m) long and 26 ft wide. If it were closed, the detour would be 0.6 mi (1 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 |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Walnut ST over Unnamed in Simpson built?
It was built in 1940, making it 85 years old in 2025.
What condition is Walnut ST over Unnamed in Simpson 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 January 2025.
How much traffic does Walnut ST over Unnamed in Simpson carry?
About 200 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is Walnut ST over Unnamed in Simpson?
The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 26 ft wide.
Who owns Walnut ST over Unnamed in Simpson?
It is owned by the Private (other than railroad) and maintained by the City or Municipal Highway Agency.