N3120 over Bluff Creek
GoodKay County, Oklahoma · 6W 3.3N of Braman · Structure no. 285200000000000
- Built
- 1992
- 33 years old
- Condition
- Good
- inspected January 2021
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 218 ft
- 3 main spans
- Daily traffic
- 32
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N3120 over Bluff Creek is a prestressed concrete stringer/multi-beam or girder carrying N3120 over Bluff Creek in Kay County, Oklahoma. It was built in 1992, so it is 33 years old, younger than the Oklahoma average of 47.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 32 vehicles a day, roughly 15% of them trucks, projected to reach 51 by 2042. The structure is 218 ft (66.3 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| 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 Bluff Creek built?
It was built in 1992, making it 33 years old in 2025.
What condition is N3120 over Bluff Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2021.
How much traffic does N3120 over Bluff Creek carry?
About 32 vehicles per day (2022 count), of which roughly 15% are trucks.
How long is N3120 over Bluff Creek?
The structure is 218 ft (66.3 m) long with a longest span of 75 ft (22.9 m) and a deck 29 ft wide.
Who owns N3120 over Bluff Creek?
It is owned by the County Highway Agency.