S21C Comstock Spur over Middle Loup River
GoodCuster County, Nebraska · 0W Comstock · Structure no. SS21C00711
- Built
- 1964
- 61 years old, rebuilt 1991
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 252 ft
- 4 main spans
- Daily traffic
- 170
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
S21C Comstock Spur over Middle Loup River is a steel continuous stringer/multi-beam or girder carrying S21C Comstock Spur over Middle Loup River in Custer County, Nebraska. It was built in 1964 and reconstructed in 1991, so it is 61 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 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 170 vehicles a day, roughly 6% of them trucks, projected to reach 213 by 2038. The structure is 252 ft (76.8 m) long and 39 ft wide. If it were closed, the detour would be 149.1 mi (240 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S21C Comstock Spur over Middle Loup River built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1991.
What condition is S21C Comstock Spur over Middle Loup River 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 November 2024.
How much traffic does S21C Comstock Spur over Middle Loup River carry?
About 170 vehicles per day (2018 count), of which roughly 6% are trucks.
How long is S21C Comstock Spur over Middle Loup River?
The structure is 252 ft (76.8 m) long with a longest span of 75 ft (22.9 m) and a deck 39 ft wide.
Who owns S21C Comstock Spur over Middle Loup River?
It is owned by the State Highway Agency.