Mckenzie Creek Rd. over Slippy Creek
FairIdaho County, Idaho · 1.7 N. Slate Creek R.Sta · Structure no. 000000000029150
- Built
- 1923
- 102 years old
- Condition
- Fair
- inspected June 2024
- Type
- Tee Beam
- Concrete
- Length
- 41 ft
- 1 main span
- Daily traffic
- 40
- 2023 count
- Owner
- Local
- Other Local Agency
About this bridge
Mckenzie Creek Rd. over Slippy Creek is a concrete tee beam carrying Mckenzie Creek Rd. over Slippy Creek in Idaho County, Idaho. It was built in 1923, so it is 102 years old, older than the Idaho average of 45.3 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 40 vehicles a day, roughly 10% of them trucks, projected to reach 60 by 2039. The structure is 41 ft (12.5 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mckenzie Creek Rd. over Slippy Creek built?
It was built in 1923, making it 102 years old in 2025.
What condition is Mckenzie Creek Rd. over Slippy Creek 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 June 2024.
How much traffic does Mckenzie Creek Rd. over Slippy Creek carry?
About 40 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is Mckenzie Creek Rd. over Slippy Creek?
The structure is 41 ft (12.5 m) long with a longest span of 40 ft (12.2 m) and a deck 22 ft wide.
Who owns Mckenzie Creek Rd. over Slippy Creek?
It is owned by the Other Local Agency.