N4120 over S Fork of Ash Creek
FairMuskogee County, Oklahoma · 2.2N;2W of SH 16 & 72 · Structure no. 207640000000000
- Built
- 1984
- 41 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 76 ft
- 1 main span
- Daily traffic
- 100
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N4120 over S Fork of Ash Creek is a prestressed concrete stringer/multi-beam or girder carrying N4120 over S Fork of Ash Creek in Muskogee County, Oklahoma. It was built in 1984, so it is 41 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 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 76 ft (23.2 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N4120 over S Fork of Ash Creek built?
It was built in 1984, making it 41 years old in 2025.
What condition is N4120 over S Fork of Ash 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 April 2024.
How much traffic does N4120 over S Fork of Ash Creek carry?
About 100 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is N4120 over S Fork of Ash Creek?
The structure is 76 ft (23.2 m) long with a longest span of 70 ft (21.3 m) and a deck 29 ft wide.
Who owns N4120 over S Fork of Ash Creek?
It is owned by the County Highway Agency.