Mo 23 S over Big Walnut CR
FairJohnson County, Missouri · S 3 T 46 N R 24 W · Structure no. 1664
- Built
- 1967
- 58 years old
- Condition
- Fair
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 148 ft
- 3 main spans
- Daily traffic
- 1,936
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 23 S over Big Walnut CR is a steel continuous stringer/multi-beam or girder carrying Mo 23 S over Big Walnut CR in Johnson County, Missouri. It was built in 1967, so it is 58 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 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 1,936 vehicles a day, roughly 17% of them trucks, projected to reach 3,001 by 2044. The structure is 148 ft (45.1 m) long and 31 ft wide. If it were closed, the detour would be 19.3 mi (31 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mo 23 S over Big Walnut CR built?
It was built in 1967, making it 58 years old in 2025.
What condition is Mo 23 S over Big Walnut 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 23 S over Big Walnut CR carry?
About 1,936 vehicles per day (2024 count), of which roughly 17% are trucks.
How long is Mo 23 S over Big Walnut CR?
The structure is 148 ft (45.1 m) long with a longest span of 58 ft (17.7 m) and a deck 31 ft wide.
Who owns Mo 23 S over Big Walnut CR?
It is owned by the State Highway Agency.