N3670 over Sand Creek
GoodSeminole County, Oklahoma · 1.7 N & 1 W of Cromwell · Structure no. 249060000000000
- Built
- 1997
- 28 years old
- Condition
- Good
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 103 ft
- 1 main span
- Daily traffic
- 70
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N3670 over Sand Creek is a prestressed concrete stringer/multi-beam or girder carrying N3670 over Sand Creek in Seminole 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 103 ft (31.4 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| 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 N3670 over Sand Creek built?
It was built in 1997, making it 28 years old in 2025.
What condition is N3670 over Sand 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 August 2023.
How much traffic does N3670 over Sand Creek carry?
About 70 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is N3670 over Sand Creek?
The structure is 103 ft (31.4 m) long with a longest span of 100 ft (30.5 m) and a deck 29 ft wide.
Who owns N3670 over Sand Creek?
It is owned by the County Highway Agency.