US 20 over Niobrara River
GoodNiobrara County, Wyoming · Lusk - Nebr Line · Structure no. NCH
- Built
- 2019
- 6 years old
- Condition
- Good
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 140 ft
- 3 main spans
- Daily traffic
- 538
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US 20 over Niobrara River is a steel continuous stringer/multi-beam or girder carrying US 20 over Niobrara River in Niobrara County, Wyoming. It was built in 2019, so it is 6 years old, younger than the Wyoming average of 48.4 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 538 vehicles a day, roughly 19% of them trucks, projected to reach 753 by 2043. The structure is 140 ft (42.7 m) long and 39 ft wide. If it were closed, the detour would be 67.1 mi (108 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 | 7 Good | Some minor problems. |
| 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 US 20 over Niobrara River built?
It was built in 2019, making it 6 years old in 2025.
What condition is US 20 over Niobrara 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 2023.
How much traffic does US 20 over Niobrara River carry?
About 538 vehicles per day (2024 count), of which roughly 19% are trucks.
How long is US 20 over Niobrara River?
The structure is 140 ft (42.7 m) long with a longest span of 68 ft (20.7 m) and a deck 39 ft wide.
Who owns US 20 over Niobrara River?
It is owned by the State Highway Agency.