N3020 over Cottonwood Creek
PoorPosted for loadLogan County, Oklahoma · 2S 3.4W of Navina · Structure no. 123940000000000
- Built
- 1950
- 75 years old, rebuilt 1989
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 108 ft
- 2 main spans
- Daily traffic
- 100
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N3020 over Cottonwood Creek is a steel stringer/multi-beam or girder carrying N3020 over Cottonwood Creek in Logan County, Oklahoma. It was built in 1950 and reconstructed in 1989, so it is 75 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 10% of them trucks, projected to reach 160 by 2042. The structure is 108 ft (32.9 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 N3020 over Cottonwood Creek built?
It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1989.
What condition is N3020 over Cottonwood 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 July 2024.
How much traffic does N3020 over Cottonwood Creek carry?
About 100 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is N3020 over Cottonwood Creek?
The structure is 108 ft (32.9 m) long with a longest span of 58 ft (17.7 m) and a deck 20 ft wide.
Who owns N3020 over Cottonwood Creek?
It is owned by the County Highway Agency.