N4488 over Blackbird Creek
FairPosted for loadCherokee County, Oklahoma · 3.2 W & 1.9 N of Moody · Structure no. 239240000000000
- Built
- 1995
- 30 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 40 ft
- 2 main spans
- Daily traffic
- 100
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N4488 over Blackbird Creek is a steel continuous stringer/multi-beam or girder carrying N4488 over Blackbird Creek in Cherokee County, Oklahoma. It was built in 1995, so it is 30 years old, younger than the Oklahoma average of 47.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 40 ft (12.2 m) long and 19 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 N4488 over Blackbird Creek built?
It was built in 1995, making it 30 years old in 2025.
What condition is N4488 over Blackbird 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 July 2024.
How much traffic does N4488 over Blackbird Creek carry?
About 100 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is N4488 over Blackbird Creek?
The structure is 40 ft (12.2 m) long with a longest span of 18 ft (5.5 m) and a deck 19 ft wide.
Who owns N4488 over Blackbird Creek?
It is owned by the County Highway Agency.