Is 29 N over Rp US169S to IS29S US 1
PoorClay County, Missouri · S 34 T 51 N R 33 W · Structure no. 6456
- Built
- 1957
- 68 years old, rebuilt 1989
- Condition
- Poor
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 295 ft
- 5 main spans
- Daily traffic
- 57,469
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Is 29 N over Rp US169S to IS29S US 1 is a steel continuous stringer/multi-beam or girder carrying Is 29 N over Rp US169S to IS29S US 1 in Clay County, Missouri. It was built in 1957 and reconstructed in 1989, so it is 68 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 4 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 57,469 vehicles a day, roughly 6% of them trucks, projected to reach 103,444 by 2044. The structure is 295 ft (89.9 m) long and 42 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 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 29 N over Rp US169S to IS29S US 1 built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1989.
What condition is Is 29 N over Rp US169S to IS29S US 1 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 September 2024.
How much traffic does Is 29 N over Rp US169S to IS29S US 1 carry?
About 57,469 vehicles per day (2024 count), of which roughly 6% are trucks.
How long is Is 29 N over Rp US169S to IS29S US 1?
The structure is 295 ft (89.9 m) long with a longest span of 75 ft (22.9 m) and a deck 42 ft wide.
Who owns Is 29 N over Rp US169S to IS29S US 1?
It is owned by the State Highway Agency.