Old Antonia RD over Trib of Rock CR
FairJefferson County, Missouri · S 12 T 42 N R 6 E · Structure no. 34722
- Built
- 2014
- 11 years old
- Condition
- Fair
- inspected February 2025
- Type
- Box Beam or Girders - Multiple
- Concrete
- Length
- 50 ft
- 1 main span
- Daily traffic
- 1,462
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Old Antonia RD over Trib of Rock CR is a concrete box beam or girders - multiple carrying Old Antonia RD over Trib of Rock CR in Jefferson County, Missouri. It was built in 2014, so it is 11 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 1,462 vehicles a day, roughly 5% of them trucks, projected to reach 2,485 by 2043. The structure is 50 ft (15.2 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 9 Excellent | No problems noted. |
| Substructure | 9 Excellent | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Antonia RD over Trib of Rock CR built?
It was built in 2014, making it 11 years old in 2025.
What condition is Old Antonia RD over Trib of 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 February 2025.
How much traffic does Old Antonia RD over Trib of Rock CR carry?
About 1,462 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is Old Antonia RD over Trib of Rock CR?
The structure is 50 ft (15.2 m) long with a longest span of 47 ft (14.3 m) and a deck 36 ft wide.
Who owns Old Antonia RD over Trib of Rock CR?
It is owned by the County Highway Agency.