Copperopolis RD over Mormon Slough
GoodSan Joaquin County, California · 1.5 MI East Milton RD · Structure no. 29C0212
- Built
- 1966
- 59 years old
- Condition
- Good
- inspected March 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 172 ft
- 3 main spans
- Daily traffic
- 2,249
- 2013 count
- Owner
- County
- County Highway Agency
About this bridge
Copperopolis RD over Mormon Slough is a concrete continuous tee beam carrying Copperopolis RD over Mormon Slough in San Joaquin 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 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 2,249 vehicles a day, roughly 5% of them trucks, projected to reach 4,096 by 2041. The structure is 172 ft (52.5 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 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 Copperopolis RD over Mormon Slough built?
It was built in 1966, making it 59 years old in 2025.
What condition is Copperopolis RD over Mormon Slough 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 March 2023.
How much traffic does Copperopolis RD over Mormon Slough carry?
About 2,249 vehicles per day (2013 count), of which roughly 5% are trucks.
How long is Copperopolis RD over Mormon Slough?
The structure is 172 ft (52.5 m) long with a longest span of 68 ft (20.8 m) and a deck 32 ft wide.
Who owns Copperopolis RD over Mormon Slough?
It is owned by the County Highway Agency.