I129/US275 over Crystal Lake
GoodDakota County, Nebraska · I129/US77 Interchg 1E · Structure no. S129 00107R
- Built
- 1977
- 48 years old, rebuilt 2021
- Condition
- Good
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 693 ft
- 10 main spans
- Daily traffic
- 14,995
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
I129/US275 over Crystal Lake is a prestressed concrete stringer/multi-beam or girder carrying I129/US275 over Crystal Lake in Dakota County, Nebraska. It was built in 1977 and reconstructed in 2021, so it is 48 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 14,995 vehicles a day, roughly 13% of them trucks, projected to reach 17,994 by 2038. The structure is 693 ft (211.2 m) long and 42 ft wide. If it were closed, the detour would be 12.4 mi (20 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 I129/US275 over Crystal Lake built?
It was built in 1977, making it 48 years old in 2025. It was reconstructed in 2021.
What condition is I129/US275 over Crystal Lake 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 I129/US275 over Crystal Lake carry?
About 14,995 vehicles per day (2018 count), of which roughly 13% are trucks.
How long is I129/US275 over Crystal Lake?
The structure is 693 ft (211.2 m) long with a longest span of 69 ft (21 m) and a deck 42 ft wide.
Who owns I129/US275 over Crystal Lake?
It is owned by the State Highway Agency.