Mo 79 S over Or 70 NS RR
FairSt. Charles County, Missouri · S 731 T 47 N R 3 E · Structure no. 3226
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 189 ft
- 4 main spans
- Daily traffic
- 11,383
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 79 S over Or 70 NS RR is a prestressed concrete continuous stringer/multi-beam or girder carrying Mo 79 S over Or 70 NS RR in St. Charles County, Missouri. It was built in 1980, so it is 45 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 11,383 vehicles a day, roughly 12% of them trucks, projected to reach 20,489 by 2044. The structure is 189 ft (57.6 m) long and 47 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mo 79 S over Or 70 NS RR built?
It was built in 1980, making it 45 years old in 2025.
What condition is Mo 79 S over Or 70 NS RR 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 2024.
How much traffic does Mo 79 S over Or 70 NS RR carry?
About 11,383 vehicles per day (2024 count), of which roughly 12% are trucks.
How long is Mo 79 S over Or 70 NS RR?
The structure is 189 ft (57.6 m) long with a longest span of 51 ft (15.4 m) and a deck 47 ft wide.
Who owns Mo 79 S over Or 70 NS RR?
It is owned by the State Highway Agency.