Clayton RD over Black CR
FairPosted for loadSt. Louis County, Missouri · S 16 T 45 N R 6 E · Structure no. 15602
- Built
- 1987
- 38 years old
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 33 ft
- 1 main span
- Daily traffic
- 12,520
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Clayton RD over Black CR is a prestressed concrete stringer/multi-beam or girder carrying Clayton RD over Black CR in St. Louis County, Missouri. It was built in 1987, so it is 38 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. Its operating status is: posted for load restriction.
It carries about 12,520 vehicles a day, roughly 5% of them trucks, projected to reach 16,902 by 2044. The structure is 33 ft (10.1 m) long and 67 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. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Clayton RD over Black CR built?
It was built in 1987, making it 38 years old in 2025.
What condition is Clayton RD over Black 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 May 2024.
How much traffic does Clayton RD over Black CR carry?
About 12,520 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is Clayton RD over Black CR?
The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 67 ft wide.
Who owns Clayton RD over Black CR?
It is owned by the County Highway Agency.