IRR N4505 over Four Mile Creek
FairOttawa County, Oklahoma · 6.W .9S of Cardin · Structure no. 216380000000000
- Built
- 1987
- 38 years old
- Condition
- Fair
- inspected September 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 110 ft
- 2 main spans
- Daily traffic
- 100
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
IRR N4505 over Four Mile Creek is a prestressed concrete tee beam carrying IRR N4505 over Four Mile Creek in Ottawa County, Oklahoma. It was built in 1987, so it is 38 years old, younger 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 110 ft (33.5 m) long and 28 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR N4505 over Four Mile Creek built?
It was built in 1987, making it 38 years old in 2025.
What condition is IRR N4505 over Four Mile 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 September 2023.
How much traffic does IRR N4505 over Four Mile Creek carry?
About 100 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is IRR N4505 over Four Mile Creek?
The structure is 110 ft (33.5 m) long with a longest span of 55 ft (16.8 m) and a deck 28 ft wide.
Who owns IRR N4505 over Four Mile Creek?
It is owned by the County Highway Agency.