State Route 140 over Mud Slough Overflow
GoodMerced County, California · 10-MER-140-10.64 · Structure no. 39 0107
- Built
- 1969
- 56 years old
- Condition
- Good
- inspected January 2023
- Type
- Slab
- Concrete Continuous
- Length
- 174 ft
- 6 main spans
- Daily traffic
- 3,650
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 140 over Mud Slough Overflow is a concrete continuous slab carrying State Route 140 over Mud Slough Overflow in Merced County, California. It was built in 1969, so it is 56 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 3,650 vehicles a day, roughly 11% of them trucks, projected to reach 4,191 by 2041. The structure is 174 ft (53.1 m) long and 34 ft wide. If it were closed, the detour would be 19.3 mi (31 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| 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 Mud Slough Overflow built?
It was built in 1969, making it 56 years old in 2025.
What condition is State Route 140 over Mud Slough Overflow in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2023.
How much traffic does State Route 140 over Mud Slough Overflow carry?
About 3,650 vehicles per day (2009 count), of which roughly 11% are trucks.
How long is State Route 140 over Mud Slough Overflow?
The structure is 174 ft (53.1 m) long with a longest span of 30 ft (9.1 m) and a deck 34 ft wide.
Who owns State Route 140 over Mud Slough Overflow?
It is owned by the State Highway Agency.