Is 55 S over Afton Drain Dtch
FairSt. Louis County, Missouri · S 24 T 44 N R 6 E · Structure no. 734
- Built
- 1962
- 63 years old
- Condition
- Fair
- inspected November 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 52 ft
- 3 main spans
- Daily traffic
- 112,163
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Is 55 S over Afton Drain Dtch is a concrete continuous culvert carrying Is 55 S over Afton Drain Dtch in St. Louis County, Missouri. It was built in 1962, so it is 63 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 5 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 112,163 vehicles a day, roughly 18% of them trucks, projected to reach 140,204 by 2044. The structure is 52 ft (15.8 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 55 S over Afton Drain Dtch built?
It was built in 1962, making it 63 years old in 2025.
What condition is Is 55 S over Afton Drain Dtch 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 Is 55 S over Afton Drain Dtch carry?
About 112,163 vehicles per day (2024 count), of which roughly 18% are trucks.
How long is Is 55 S over Afton Drain Dtch?
The structure is 52 ft (15.8 m) long with a longest span of 9 ft (2.7 m).
Who owns Is 55 S over Afton Drain Dtch?
It is owned by the State Highway Agency.