Triangle Road over Snow Creek
PoorMariposa County, California · 0.1 MI W Darrah RD · Structure no. 40C0034
- Built
- 1935
- 90 years old
- Condition
- Poor
- inspected September 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 100 ft
- 3 main spans
- Daily traffic
- 360
- 1988 count
- Owner
- County
- County Highway Agency
About this bridge
Triangle Road over Snow Creek is a concrete continuous tee beam carrying Triangle Road over Snow Creek in Mariposa County, California. It was built in 1935, so it is 90 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 360 vehicles a day, roughly 3% of them trucks, projected to reach 1,069 by 2040. The structure is 100 ft (30.5 m) long and 20 ft wide. If it were closed, the detour would be 14.9 mi (24 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Triangle Road over Snow Creek built?
It was built in 1935, making it 90 years old in 2025.
What condition is Triangle Road over Snow 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 Triangle Road over Snow Creek carry?
About 360 vehicles per day (1988 count), of which roughly 3% are trucks.
How long is Triangle Road over Snow Creek?
The structure is 100 ft (30.5 m) long with a longest span of 40 ft (12.2 m) and a deck 20 ft wide.
Who owns Triangle Road over Snow Creek?
It is owned by the County Highway Agency.