State Route 140 over Merced River
FairMariposa County, California · 10-MPA-140-42.50 · Structure no. 40 0058
- Built
- 2008
- 17 years old
- Condition
- Fair
- inspected July 2024
- Type
- Truss - Thru
- Steel Continuous
- Length
- 300 ft
- 2 main spans
- Daily traffic
- 1,400
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 140 over Merced River is a steel continuous truss - thru carrying State Route 140 over Merced River in Mariposa County, California. It was built in 2008, so it is 17 years old, younger 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 1,400 vehicles a day, roughly 5% of them trucks, projected to reach 1,172 by 2046. The structure is 300 ft (91.4 m) long and 14 ft wide. If it were closed, the detour would be 105.6 mi (170 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 |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 State Route 140 over Merced River built?
It was built in 2008, making it 17 years old in 2025.
What condition is State Route 140 over Merced River 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 July 2024.
How much traffic does State Route 140 over Merced River carry?
About 1,400 vehicles per day (2009 count), of which roughly 5% are trucks.
How long is State Route 140 over Merced River?
The structure is 300 ft (91.4 m) long with a longest span of 170 ft (51.8 m) and a deck 14 ft wide.
Who owns State Route 140 over Merced River?
It is owned by the State Highway Agency.