N4550 over Whitegrass Creek
GoodMcCurtain County, Oklahoma · 1.4 S Iron Stob Corner · Structure no. 108510000000000
- Built
- 1997
- 28 years old
- Condition
- Good
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 55 ft
- 1 main span
- Daily traffic
- 70
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N4550 over Whitegrass Creek is a prestressed concrete stringer/multi-beam or girder carrying N4550 over Whitegrass Creek in McCurtain County, Oklahoma. It was built in 1997, so it is 28 years old, younger than the Oklahoma average of 47.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 70 vehicles a day, roughly 10% of them trucks, projected to reach 112 by 2042. The structure is 55 ft (16.9 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N4550 over Whitegrass Creek built?
It was built in 1997, making it 28 years old in 2025.
What condition is N4550 over Whitegrass Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.
How much traffic does N4550 over Whitegrass Creek carry?
About 70 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is N4550 over Whitegrass Creek?
The structure is 55 ft (16.9 m) long with a longest span of 51 ft (15.5 m) and a deck 28 ft wide.
Who owns N4550 over Whitegrass Creek?
It is owned by the County Highway Agency.