N121 over Missouri River Trib
GoodCedar County, Nebraska · 11NE Crofton · Structure no. S121 07791
- Built
- 1989
- 36 years old
- Condition
- Good
- inspected September 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 137 ft
- 3 main spans
- Daily traffic
- 1,535
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
N121 over Missouri River Trib is a prestressed concrete tee beam carrying N121 over Missouri River Trib in Cedar County, Nebraska. It was built in 1989, so it is 36 years old, younger 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 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 1,535 vehicles a day, roughly 3% of them trucks, projected to reach 2,303 by 2038. The structure is 137 ft (41.8 m) long and 43 ft wide. If it were closed, the detour would be 31.1 mi (50 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N121 over Missouri River Trib built?
It was built in 1989, making it 36 years old in 2025.
What condition is N121 over Missouri River Trib 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 September 2024.
How much traffic does N121 over Missouri River Trib carry?
About 1,535 vehicles per day (2018 count), of which roughly 3% are trucks.
How long is N121 over Missouri River Trib?
The structure is 137 ft (41.8 m) long with a longest span of 45 ft (13.7 m) and a deck 43 ft wide.
Who owns N121 over Missouri River Trib?
It is owned by the State Highway Agency.