N3120 over Red Rock Creek
FairNoble County, Oklahoma · .1E 2.7S of Billings · Structure no. 168040000000000
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 260 ft
- 1 main span
- Daily traffic
- 385
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N3120 over Red Rock Creek is a prestressed concrete stringer/multi-beam or girder carrying N3120 over Red Rock Creek in Noble County, Oklahoma. It was built in 1966, so it is 59 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.
It carries about 385 vehicles a day, roughly 15% of them trucks, projected to reach 616 by 2042. The structure is 260 ft (79.2 m) long and 33 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 N3120 over Red Rock Creek built?
It was built in 1966, making it 59 years old in 2025.
What condition is N3120 over Red Rock 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 N3120 over Red Rock Creek carry?
About 385 vehicles per day (2022 count), of which roughly 15% are trucks.
How long is N3120 over Red Rock Creek?
The structure is 260 ft (79.2 m) long with a longest span of 60 ft (18.3 m) and a deck 33 ft wide.
Who owns N3120 over Red Rock Creek?
It is owned by the County Highway Agency.