State Route 140 over South Fork Merced River
PoorMariposa County, California · 10-MPA-140-43.22 · Structure no. 40 0008
- Built
- 1926
- 99 years old
- Condition
- Poor
- inspected July 2024
- Type
- Tee Beam
- Concrete
- Length
- 152 ft
- 3 main spans
- Daily traffic
- 1,400
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 140 over South Fork Merced River is a concrete tee beam carrying State Route 140 over South Fork Merced River in Mariposa County, California. It was built in 1926, so it is 99 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 1,400 vehicles a day, roughly 5% of them trucks, projected to reach 1,172 by 2046. The structure is 152 ft (46.3 m) long and 28 ft wide. If it were closed, the detour would be 62.1 mi (100 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 140 over South Fork Merced River built?
It was built in 1926, making it 99 years old in 2025.
What condition is State Route 140 over South Fork Merced River 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 July 2024.
How much traffic does State Route 140 over South Fork Merced River carry?
About 1,400 vehicles per day (2009 count), of which roughly 5% are trucks.
How long is State Route 140 over South Fork Merced River?
The structure is 152 ft (46.3 m) long with a longest span of 50 ft (15.2 m) and a deck 28 ft wide.
Who owns State Route 140 over South Fork Merced River?
It is owned by the State Highway Agency.