N12 over Ponca Creek
GoodBoyd County, Nebraska · Wcl Lynch · Structure no. S012 13604
- Built
- 1955
- 70 years old, rebuilt 1992
- Condition
- Good
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 192 ft
- 3 main spans
- Daily traffic
- 630
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
N12 over Ponca Creek is a steel continuous stringer/multi-beam or girder carrying N12 over Ponca Creek in Boyd County, Nebraska. It was built in 1955 and reconstructed in 1992, so it is 70 years old, older than the Nebraska average of 47.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 630 vehicles a day, roughly 10% of them trucks, projected to reach 851 by 2038. The structure is 192 ft (58.5 m) long and 38 ft wide. If it were closed, the detour would be 80.8 mi (130 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 | 9 Excellent | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N12 over Ponca Creek built?
It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1992.
What condition is N12 over Ponca 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 March 2023.
How much traffic does N12 over Ponca Creek carry?
About 630 vehicles per day (2018 count), of which roughly 10% are trucks.
How long is N12 over Ponca Creek?
The structure is 192 ft (58.5 m) long with a longest span of 90 ft (27.4 m) and a deck 38 ft wide.
Who owns N12 over Ponca Creek?
It is owned by the State Highway Agency.