N3120 over Black Bear Creek
FairPosted for loadNoble County, Oklahoma · 0.7E 5.2N of Lucien · Structure no. 155660000000000
- Built
- 1962
- 63 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 261 ft
- 3 main spans
- Daily traffic
- 75
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N3120 over Black Bear Creek is a steel continuous stringer/multi-beam or girder carrying N3120 over Black Bear Creek in Noble County, Oklahoma. It was built in 1962, so it is 63 years old, older 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 6 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 75 vehicles a day, roughly 15% of them trucks, projected to reach 120 by 2042. The structure is 261 ft (79.7 m) long and 27 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 | 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. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N3120 over Black Bear Creek built?
It was built in 1962, making it 63 years old in 2025.
What condition is N3120 over Black Bear 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 August 2024.
How much traffic does N3120 over Black Bear Creek carry?
About 75 vehicles per day (2022 count), of which roughly 15% are trucks.
How long is N3120 over Black Bear Creek?
The structure is 261 ft (79.7 m) long with a longest span of 100 ft (30.5 m) and a deck 27 ft wide.
Who owns N3120 over Black Bear Creek?
It is owned by the County Highway Agency.