Is 229 N over US 59
FairPosted for loadBuchanan County, Missouri · S 8 T 57 N R 35 W · Structure no. 2454
- Built
- 1979
- 46 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 220 ft
- 3 main spans
- Daily traffic
- 9,275
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Is 229 N over US 59 is a steel continuous stringer/multi-beam or girder carrying Is 229 N over US 59 in Buchanan County, Missouri. It was built in 1979, so it is 46 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. Its operating status is: posted for load restriction.
It carries about 9,275 vehicles a day, roughly 22% of them trucks, projected to reach 15,768 by 2044. The structure is 220 ft (67.1 m) long and 41 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 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 229 N over US 59 built?
It was built in 1979, making it 46 years old in 2025.
What condition is Is 229 N over US 59 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 July 2024.
How much traffic does Is 229 N over US 59 carry?
About 9,275 vehicles per day (2024 count), of which roughly 22% are trucks.
How long is Is 229 N over US 59?
The structure is 220 ft (67.1 m) long with a longest span of 82 ft (25 m) and a deck 41 ft wide.
Who owns Is 229 N over US 59?
It is owned by the State Highway Agency.