N4120 over N. Fork of Ash Creek
PoorMuskogee County, Oklahoma · 3.2N;2W of SH16 & 72 · Structure no. 202000000000000
- Built
- 1982
- 43 years old
- Condition
- Poor
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 68 ft
- 1 main span
- Daily traffic
- 100
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N4120 over N. Fork of Ash Creek is a prestressed concrete stringer/multi-beam or girder carrying N4120 over N. Fork of Ash Creek in Muskogee County, Oklahoma. It was built in 1982, so it is 43 years old, younger than the Oklahoma average of 47.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 68 ft (20.7 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
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 N4120 over N. Fork of Ash Creek built?
It was built in 1982, making it 43 years old in 2025.
What condition is N4120 over N. Fork of Ash Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.
How much traffic does N4120 over N. Fork of Ash Creek carry?
About 100 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is N4120 over N. Fork of Ash Creek?
The structure is 68 ft (20.7 m) long with a longest span of 64 ft (19.5 m) and a deck 29 ft wide.
Who owns N4120 over N. Fork of Ash Creek?
It is owned by the County Highway Agency.