CO RD 450 over Br Blackwater Rvr
FairJohnson County, Missouri · S 33 T 47 N R 26 W · Structure no. 15450
- Built
- 1900
- 125 years old, rebuilt 1994
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 41 ft
- 1 main span
- Daily traffic
- 45
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
CO RD 450 over Br Blackwater Rvr is a steel stringer/multi-beam or girder carrying CO RD 450 over Br Blackwater Rvr in Johnson County, Missouri. It was built in 1900 and reconstructed in 1994, so it is 125 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 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 45 vehicles a day, roughly 10% of them trucks, projected to reach 72 by 2043. The structure is 41 ft (12.5 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 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 CO RD 450 over Br Blackwater Rvr built?
It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1994.
What condition is CO RD 450 over Br Blackwater Rvr 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 2024.
How much traffic does CO RD 450 over Br Blackwater Rvr carry?
About 45 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is CO RD 450 over Br Blackwater Rvr?
The structure is 41 ft (12.5 m) long with a longest span of 39 ft (11.9 m) and a deck 23 ft wide.
Who owns CO RD 450 over Br Blackwater Rvr?
It is owned by the County Highway Agency.