US 61 S over Spring Br
FairSt. Charles County, Missouri · S 13 T 47 N R 1 E · Structure no. 2347
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected November 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 71,878
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US 61 S over Spring Br is a concrete continuous culvert carrying US 61 S over Spring Br in St. Charles County, Missouri. It was built in 1973, so it is 52 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 71,878 vehicles a day, roughly 15% of them trucks, projected to reach 122,193 by 2044. The structure is 21 ft (6.4 m) long. 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 61 S over Spring Br built?
It was built in 1973, making it 52 years old in 2025.
What condition is US 61 S over Spring 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 November 2023.
How much traffic does US 61 S over Spring Br carry?
About 71,878 vehicles per day (2024 count), of which roughly 15% are trucks.
How long is US 61 S over Spring Br?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).
Who owns US 61 S over Spring Br?
It is owned by the State Highway Agency.