N1770 over Sandy Creek
GoodHarmon County, Oklahoma · 7.3S 1.9W of Gould · Structure no. 204840000000000
- Built
- 1983
- 42 years old
- Condition
- Good
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 67 ft
- 1 main span
- Daily traffic
- 50
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N1770 over Sandy Creek is a prestressed concrete stringer/multi-beam or girder carrying N1770 over Sandy Creek in Harmon County, Oklahoma. It was built in 1983, so it is 42 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 80 by 2042. The structure is 67 ft (20.4 m) long and 29 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N1770 over Sandy Creek built?
It was built in 1983, making it 42 years old in 2025.
What condition is N1770 over Sandy 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 February 2024.
How much traffic does N1770 over Sandy Creek carry?
About 50 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is N1770 over Sandy Creek?
The structure is 67 ft (20.4 m) long with a longest span of 63 ft (19.2 m) and a deck 29 ft wide.
Who owns N1770 over Sandy Creek?
It is owned by the County Highway Agency.