Main Street over Porter Slough
FairTulare County, California · 0.1 MI N of E Olive ST · Structure no. 46C0046
- Built
- 1924
- 101 years old
- Condition
- Fair
- inspected February 2025
- Type
- Slab
- Concrete Continuous
- Length
- 60 ft
- 3 main spans
- Daily traffic
- 9,500
- 2013 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Main Street over Porter Slough is a concrete continuous slab carrying Main Street over Porter Slough in Tulare County, California. It was built in 1924, so it is 101 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 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 9,500 vehicles a day, roughly 5% of them trucks, projected to reach 16,853 by 2047. The structure is 60 ft (18.3 m) long and 90 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 | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Main Street over Porter Slough built?
It was built in 1924, making it 101 years old in 2025.
What condition is Main Street 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 Main Street over Porter Slough carry?
About 9,500 vehicles per day (2013 count), of which roughly 5% are trucks.
How long is Main Street over Porter Slough?
The structure is 60 ft (18.3 m) long with a longest span of 20 ft (6.1 m) and a deck 90 ft wide.
Who owns Main Street over Porter Slough?
It is owned by the City or Municipal Highway Agency.