I 80W over SR400 Unionville RD
FairPershing County, Nevada · Near Mill City · Structure no. I 860W
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected July 2023
- Type
- Slab
- Concrete Continuous
- Length
- 104 ft
- 3 main spans
- Daily traffic
- 4,425
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
I 80W over SR400 Unionville RD is a concrete continuous slab carrying I 80W over SR400 Unionville RD in Pershing County, Nevada. It was built in 1966, so it is 59 years old, older than the Nevada average of 36.4 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 4,425 vehicles a day, roughly 34% of them trucks, projected to reach 5,600 by 2040. The structure is 104 ft (31.7 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 80W over SR400 Unionville RD built?
It was built in 1966, making it 59 years old in 2025.
What condition is I 80W over SR400 Unionville RD 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 July 2023.
How much traffic does I 80W over SR400 Unionville RD carry?
About 4,425 vehicles per day (2021 count), of which roughly 34% are trucks.
How long is I 80W over SR400 Unionville RD?
The structure is 104 ft (31.7 m) long with a longest span of 42 ft (12.8 m) and a deck 44 ft wide.
Who owns I 80W over SR400 Unionville RD?
It is owned by the State Highway Agency.