IRR N4570 over Creek
PoorPosted for loadOttawa County, Oklahoma · 1.2 W of Quapaw · Structure no. 065950000000000
- Built
- 1939
- 86 years old
- Condition
- Poor
- inspected September 2023
- Type
- Slab
- Concrete
- Length
- 25 ft
- 2 main spans
- Daily traffic
- 100
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
IRR N4570 over Creek is a concrete slab carrying IRR N4570 over Creek in Ottawa County, Oklahoma. It was built in 1939, so it is 86 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 3 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 25 ft (7.6 m) long and 32 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| 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 IRR N4570 over Creek built?
It was built in 1939, making it 86 years old in 2025.
What condition is IRR N4570 over 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 September 2023.
How much traffic does IRR N4570 over Creek carry?
About 100 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is IRR N4570 over Creek?
The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 32 ft wide.
Who owns IRR N4570 over Creek?
It is owned by the County Highway Agency.