Is 29 N over Rock CR
GoodAtchison County, Missouri · S 16 T 64 N R 41 W · Structure no. 2361
- Built
- 1973
- 52 years old, rebuilt 2015
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 253 ft
- 5 main spans
- Daily traffic
- 8,439
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Is 29 N over Rock CR is a steel continuous stringer/multi-beam or girder carrying Is 29 N over Rock CR in Atchison County, Missouri. It was built in 1973 and reconstructed in 2015, so it is 52 years old, older than the Missouri average of 45.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 8,439 vehicles a day, roughly 39% of them trucks, projected to reach 17,722 by 2044. The structure is 253 ft (77.1 m) long and 42 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 29 N over Rock CR built?
It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2015.
What condition is Is 29 N over Rock CR in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.
How much traffic does Is 29 N over Rock CR carry?
About 8,439 vehicles per day (2024 count), of which roughly 39% are trucks.
How long is Is 29 N over Rock CR?
The structure is 253 ft (77.1 m) long with a longest span of 55 ft (16.8 m) and a deck 42 ft wide.
Who owns Is 29 N over Rock CR?
It is owned by the State Highway Agency.