Plano ST over Porter Slough
FairTulare County, California · 0.5 MI N SR 190 · Structure no. 46C0172
- Built
- 1954
- 71 years old
- Condition
- Fair
- inspected February 2025
- Type
- Culvert
- Concrete Continuous
- Length
- 55 ft
- 3 main spans
- Daily traffic
- 10,700
- 2013 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Plano ST over Porter Slough is a concrete continuous culvert carrying Plano ST over Porter Slough in Tulare County, California. It was built in 1954, so it is 71 years old, older 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 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 10,700 vehicles a day, roughly 5% of them trucks, projected to reach 13,405 by 2043. The structure is 55 ft (16.7 m) long and 60 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Plano ST over Porter Slough built?
It was built in 1954, making it 71 years old in 2025.
What condition is Plano ST over Porter Slough 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 February 2025.
How much traffic does Plano ST over Porter Slough carry?
About 10,700 vehicles per day (2013 count), of which roughly 5% are trucks.
How long is Plano ST over Porter Slough?
The structure is 55 ft (16.7 m) long with a longest span of 18 ft (5.5 m) and a deck 60 ft wide.
Who owns Plano ST over Porter Slough?
It is owned by the City or Municipal Highway Agency.