Mo 7 S over Big Rock CR
FairJackson County, Missouri · S 31 T 48 N R 30 W · Structure no. 2117
- Built
- 1969
- 56 years old, rebuilt 2011
- Condition
- Fair
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 105 ft
- 3 main spans
- Daily traffic
- 5,456
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 7 S over Big Rock CR is a steel continuous stringer/multi-beam or girder carrying Mo 7 S over Big Rock CR in Jackson County, Missouri. It was built in 1969 and reconstructed in 2011, so it is 56 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 5,456 vehicles a day, roughly 8% of them trucks, projected to reach 7,366 by 2044. The structure is 105 ft (32 m) long and 41 ft wide. If it were closed, the detour would be 11.8 mi (19 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 | 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 Mo 7 S over Big Rock CR built?
It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2011.
What condition is Mo 7 S over Big Rock 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 7 S over Big Rock CR carry?
About 5,456 vehicles per day (2024 count), of which roughly 8% are trucks.
How long is Mo 7 S over Big Rock CR?
The structure is 105 ft (32 m) long with a longest span of 36 ft (11 m) and a deck 41 ft wide.
Who owns Mo 7 S over Big Rock CR?
It is owned by the State Highway Agency.