Harness RD over Plattin CR
PoorJefferson County, Missouri · S 857 T 39 N R 6 E · Structure no. 22089
- Built
- 1906
- 119 years old, rebuilt 1984
- Condition
- Poor
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 148 ft
- 2 main spans
- Daily traffic
- 242
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Harness RD over Plattin CR is a prestressed concrete box beam or girders - multiple carrying Harness RD over Plattin CR in Jefferson County, Missouri. It was built in 1906 and reconstructed in 1984, so it is 119 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.
It carries about 242 vehicles a day, roughly 10% of them trucks, projected to reach 484 by 2043. The structure is 148 ft (45.1 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Harness RD over Plattin CR built?
It was built in 1906, making it 119 years old in 2025. It was reconstructed in 1984.
What condition is Harness RD over Plattin 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 January 2025.
How much traffic does Harness RD over Plattin CR carry?
About 242 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is Harness RD over Plattin CR?
The structure is 148 ft (45.1 m) long with a longest span of 73 ft (22.3 m) and a deck 28 ft wide.
Who owns Harness RD over Plattin CR?
It is owned by the County Highway Agency.