Antioch RD over Rock CR
PoorPosted for loadClay County, Missouri · S 7 T 50 N R 32 W · Structure no. 25315
- Built
- 1920
- 105 years old
- Condition
- Poor
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 29 ft
- 1 main span
- Daily traffic
- 3,371
- 2024 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Antioch RD over Rock CR is a steel stringer/multi-beam or girder carrying Antioch RD over Rock CR in Clay County, Missouri. It was built in 1920, so it is 105 years old, older than the Missouri average of 45.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 3,371 vehicles a day, roughly 3% of them trucks, projected to reach 5,394 by 2044. The structure is 29 ft (8.8 m) long and 22 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Antioch RD over Rock CR built?
It was built in 1920, making it 105 years old in 2025.
What condition is Antioch RD over Rock CR in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.
How much traffic does Antioch RD over Rock CR carry?
About 3,371 vehicles per day (2024 count), of which roughly 3% are trucks.
How long is Antioch RD over Rock CR?
The structure is 29 ft (8.8 m) long with a longest span of 28 ft (8.5 m) and a deck 22 ft wide.
Who owns Antioch RD over Rock CR?
It is owned by the City or Municipal Highway Agency.