N3520 over Mud Creek
FairSeminole County, Oklahoma · 3.7 S & 4 W of Wolf · Structure no. 252150000000000
- Built
- 1999
- 26 years old
- Condition
- Fair
- inspected June 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 138 ft
- 3 main spans
- Daily traffic
- 100
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N3520 over Mud Creek is a prestressed concrete tee beam carrying N3520 over Mud Creek in Seminole County, Oklahoma. It was built in 1999, so it is 26 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 6 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 138 ft (42.2 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 N3520 over Mud Creek built?
It was built in 1999, making it 26 years old in 2025.
What condition is N3520 over Mud 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 June 2023.
How much traffic does N3520 over Mud Creek carry?
About 100 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is N3520 over Mud Creek?
The structure is 138 ft (42.2 m) long with a longest span of 45 ft (13.7 m) and a deck 28 ft wide.
Who owns N3520 over Mud Creek?
It is owned by the County Highway Agency.