N3120 over Skeleton Creek
PoorPosted for loadLogan County, Oklahoma · 2W 5.5S of Mulhall · Structure no. 151610000000000
- Built
- 1960
- 65 years old
- Condition
- Poor
- inspected May 2023
- Type
- Truss - Thru
- Steel
- Length
- 184 ft
- 1 main span
- Daily traffic
- 100
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N3120 over Skeleton Creek is a steel truss - thru carrying N3120 over Skeleton Creek in Logan County, Oklahoma. It was built in 1960, so it is 65 years old, older 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. Its operating status is: posted for load restriction.
It carries about 100 vehicles a day, roughly 15% of them trucks, projected to reach 160 by 2042. The structure is 184 ft (56.1 m) long and 28 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 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 N3120 over Skeleton Creek built?
It was built in 1960, making it 65 years old in 2025.
What condition is N3120 over Skeleton 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 May 2023.
How much traffic does N3120 over Skeleton Creek carry?
About 100 vehicles per day (2022 count), of which roughly 15% are trucks.
How long is N3120 over Skeleton Creek?
The structure is 184 ft (56.1 m) long with a longest span of 100 ft (30.5 m) and a deck 28 ft wide.
Who owns N3120 over Skeleton Creek?
It is owned by the County Highway Agency.