N4120 over Adams Creek
FairWagoner County, Oklahoma · 4.6S Rog Cl on Oak Grove · Structure no. 210110000000000
- Built
- 1985
- 40 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 76 ft
- 1 main span
- Daily traffic
- 320
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N4120 over Adams Creek is a prestressed concrete stringer/multi-beam or girder carrying N4120 over Adams Creek in Wagoner County, Oklahoma. It was built in 1985, so it is 40 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.
It carries about 320 vehicles a day, roughly 10% of them trucks, projected to reach 512 by 2042. The structure is 76 ft (23.2 m) long and 29 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 | 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 N4120 over Adams Creek built?
It was built in 1985, making it 40 years old in 2025.
What condition is N4120 over Adams 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 N4120 over Adams Creek carry?
About 320 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is N4120 over Adams Creek?
The structure is 76 ft (23.2 m) long with a longest span of 74 ft (22.5 m) and a deck 29 ft wide.
Who owns N4120 over Adams Creek?
It is owned by the County Highway Agency.