I 580 over SR 431 Mt Rose
GoodWashoe County, Nevada · SW of Reno · Structure no. I1949S
- Built
- 2012
- 13 years old
- Condition
- Good
- inspected April 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 358 ft
- 2 main spans
- Daily traffic
- 23,000
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
I 580 over SR 431 Mt Rose is a prestressed concrete continuous box beam or girders - single or spread carrying I 580 over SR 431 Mt Rose in Washoe County, Nevada. It was built in 2012, so it is 13 years old, younger than the Nevada average of 36.4 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 23,000 vehicles a day, roughly 3% of them trucks, projected to reach 52,120 by 2040. The structure is 358 ft (109 m) long and 62 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 580 over SR 431 Mt Rose built?
It was built in 2012, making it 13 years old in 2025.
What condition is I 580 over SR 431 Mt Rose 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 April 2024.
How much traffic does I 580 over SR 431 Mt Rose carry?
About 23,000 vehicles per day (2021 count), of which roughly 3% are trucks.
How long is I 580 over SR 431 Mt Rose?
The structure is 358 ft (109 m) long with a longest span of 192 ft (58.5 m) and a deck 62 ft wide.
Who owns I 580 over SR 431 Mt Rose?
It is owned by the State Highway Agency.