6th Street over Mariposa Creek
PoorMariposa County, California · At Stroming Road · Structure no. 40C0050
- Built
- 1950
- 75 years old
- Condition
- Poor
- inspected September 2023
- Type
- Slab
- Concrete Continuous
- Length
- 64 ft
- 5 main spans
- Daily traffic
- 1,080
- 1988 count
- Owner
- County
- County Highway Agency
About this bridge
6th Street over Mariposa Creek is a concrete continuous slab carrying 6th Street over Mariposa Creek in Mariposa County, California. It was built in 1950, so it is 75 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 1,080 vehicles a day, roughly 3% of them trucks, projected to reach 2,137 by 2040. The structure is 64 ft (19.5 m) long and 22 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 6th Street over Mariposa Creek built?
It was built in 1950, making it 75 years old in 2025.
What condition is 6th Street over Mariposa Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.
How much traffic does 6th Street over Mariposa Creek carry?
About 1,080 vehicles per day (1988 count), of which roughly 3% are trucks.
How long is 6th Street over Mariposa Creek?
The structure is 64 ft (19.5 m) long with a longest span of 16 ft (4.9 m) and a deck 22 ft wide.
Who owns 6th Street over Mariposa Creek?
It is owned by the County Highway Agency.