Is 229 N over Is 29
FairBuchanan County, Missouri · S 35 T 57 N R 35 W · Structure no. 1020
- Built
- 1965
- 60 years old, rebuilt 1981
- Condition
- Fair
- inspected August 2024
- Type
- Box Beam or Girders - Single or Spread
- Concrete Continuous
- Length
- 293 ft
- 4 main spans
- Daily traffic
- 3,196
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Is 229 N over Is 29 is a concrete continuous box beam or girders - single or spread carrying Is 229 N over Is 29 in Buchanan County, Missouri. It was built in 1965 and reconstructed in 1981, so it is 60 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 3,196 vehicles a day, roughly 33% of them trucks, projected to reach 5,433 by 2044. The structure is 293 ft (89.3 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 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 Is 29 built?
It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1981.
What condition is Is 229 N over Is 29 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 August 2024.
How much traffic does Is 229 N over Is 29 carry?
About 3,196 vehicles per day (2024 count), of which roughly 33% are trucks.
How long is Is 229 N over Is 29?
The structure is 293 ft (89.3 m) long with a longest span of 86 ft (26.2 m) and a deck 27 ft wide.
Who owns Is 229 N over Is 29?
It is owned by the State Highway Agency.