Mo 11 S over Winnegan Br
FairLinn County, Missouri · S 5 T 59 N R 18 W · Structure no. 3221
- Built
- 1979
- 46 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 136 ft
- 3 main spans
- Daily traffic
- 287
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 11 S over Winnegan Br is a prestressed concrete continuous stringer/multi-beam or girder carrying Mo 11 S over Winnegan Br in Linn County, Missouri. It was built in 1979, so it is 46 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 287 vehicles a day, roughly 12% of them trucks, projected to reach 359 by 2044. The structure is 136 ft (41.5 m) long and 37 ft wide. If it were closed, the detour would be 39.1 mi (63 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mo 11 S over Winnegan Br built?
It was built in 1979, making it 46 years old in 2025.
What condition is Mo 11 S over Winnegan Br 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 September 2024.
How much traffic does Mo 11 S over Winnegan Br carry?
About 287 vehicles per day (2024 count), of which roughly 12% are trucks.
How long is Mo 11 S over Winnegan Br?
The structure is 136 ft (41.5 m) long with a longest span of 46 ft (13.9 m) and a deck 37 ft wide.
Who owns Mo 11 S over Winnegan Br?
It is owned by the State Highway Agency.