State Route 58 WB over Mt Vernon Avenue
FairKern County, California · 06-KER-058-R56.41 · Structure no. 50 0392L
- Built
- 1974
- 51 years old, rebuilt 2004
- Condition
- Fair
- inspected September 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 152 ft
- 1 main span
- Daily traffic
- 32,500
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 58 WB over Mt Vernon Avenue is a prestressed concrete box beam or girders - multiple carrying State Route 58 WB over Mt Vernon Avenue in Kern County, California. It was built in 1974 and reconstructed in 2004, so it is 51 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 32,500 vehicles a day, roughly 25% of them trucks, projected to reach 49,092 by 2045. The structure is 152 ft (46.3 m) long and 59 ft wide.
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 | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 58 WB over Mt Vernon Avenue built?
It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2004.
What condition is State Route 58 WB over Mt Vernon Avenue 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 September 2023.
How much traffic does State Route 58 WB over Mt Vernon Avenue carry?
About 32,500 vehicles per day (2009 count), of which roughly 25% are trucks.
How long is State Route 58 WB over Mt Vernon Avenue?
The structure is 152 ft (46.3 m) long with a longest span of 152 ft (46.3 m) and a deck 59 ft wide.
Who owns State Route 58 WB over Mt Vernon Avenue?
It is owned by the State Highway Agency.