State Route 49 over Merced River
FairMariposa County, California · 10-MPA-049-R34.35 · Structure no. 40 0047
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 1,157 ft
- 6 main spans
- Daily traffic
- 615
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 49 over Merced River is a steel stringer/multi-beam or girder carrying State Route 49 over Merced River in Mariposa County, California. It was built in 1966, so it is 59 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 615 vehicles a day, roughly 5% of them trucks, projected to reach 745 by 2046. The structure is 1,157 ft (352.7 m) long and 34 ft wide. If it were closed, the detour would be 82 mi (132 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 49 over Merced River built?
It was built in 1966, making it 59 years old in 2025.
What condition is State Route 49 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 49 over Merced River carry?
About 615 vehicles per day (2009 count), of which roughly 5% are trucks.
How long is State Route 49 over Merced River?
The structure is 1,157 ft (352.7 m) long with a longest span of 200 ft (61 m) and a deck 34 ft wide.
Who owns State Route 49 over Merced River?
It is owned by the State Highway Agency.