NW 284th ST over Castile CR
PoorClinton County, Missouri · S 1 T 55 N R 33 W · Structure no. 21811
- Built
- 1970
- 55 years old, rebuilt 2010
- Condition
- Poor
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 115 ft
- 3 main spans
- Daily traffic
- 35
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
NW 284th ST over Castile CR is a steel stringer/multi-beam or girder carrying NW 284th ST over Castile CR in Clinton County, Missouri. It was built in 1970 and reconstructed in 2010, so it is 55 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 3 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2043. The structure is 115 ft (35.1 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Channel and channel protection | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NW 284th ST over Castile CR built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2010.
What condition is NW 284th ST over Castile 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 December 2024.
How much traffic does NW 284th ST over Castile CR carry?
About 35 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is NW 284th ST over Castile CR?
The structure is 115 ft (35.1 m) long with a longest span of 60 ft (18.3 m) and a deck 26 ft wide.
Who owns NW 284th ST over Castile CR?
It is owned by the County Highway Agency.