N4070 over Curl Creek
FairPosted for loadNowata County, Oklahoma · 7.0 MI W of Nowata · Structure no. 023740000000000
- Built
- 1930
- 95 years old
- Condition
- Fair
- inspected April 2024
- Type
- Slab
- Concrete
- Length
- 22 ft
- 1 main span
- Daily traffic
- 100
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N4070 over Curl Creek is a concrete slab carrying N4070 over Curl Creek in Nowata County, Oklahoma. It was built in 1930, so it is 95 years old, older 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. 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 22 ft (6.7 m) long and 26 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 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 | 7 Good | Some minor problems. |
| 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 N4070 over Curl Creek built?
It was built in 1930, making it 95 years old in 2025.
What condition is N4070 over Curl 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 N4070 over Curl Creek carry?
About 100 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is N4070 over Curl Creek?
The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.
Who owns N4070 over Curl Creek?
It is owned by the County Highway Agency.