US 20 Service Road over Elkhorn Creek
FairNatrona County, Wyoming · East Yellowstone - Casper · Structure no. BLX
- Built
- 1957
- 68 years old
- Condition
- Fair
- inspected June 2024
- Type
- Slab
- Concrete Continuous
- Length
- 81 ft
- 4 main spans
- Daily traffic
- 181
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US 20 Service Road over Elkhorn Creek is a concrete continuous slab carrying US 20 Service Road over Elkhorn Creek in Natrona County, Wyoming. It was built in 1957, so it is 68 years old, older than the Wyoming average of 48.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 181 vehicles a day, roughly 4% of them trucks, projected to reach 253 by 2043. The structure is 81 ft (24.7 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 US 20 Service Road over Elkhorn Creek built?
It was built in 1957, making it 68 years old in 2025.
What condition is US 20 Service Road over Elkhorn Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.
How much traffic does US 20 Service Road over Elkhorn Creek carry?
About 181 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is US 20 Service Road over Elkhorn Creek?
The structure is 81 ft (24.7 m) long with a longest span of 22 ft (6.6 m) and a deck 29 ft wide.
Who owns US 20 Service Road over Elkhorn Creek?
It is owned by the State Highway Agency.