Union Road over ST RTE 120
GoodSan Joaquin County, California · 10-SJ-120-R4.31-MTCA · Structure no. 29 0275
- Built
- 1980
- 45 years old, rebuilt 2021
- Condition
- Good
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 215 ft
- 2 main spans
- Daily traffic
- 5,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Union Road over ST RTE 120 is a prestressed concrete box beam or girders - multiple carrying Union Road over ST RTE 120 in San Joaquin County, California. It was built in 1980 and reconstructed in 2021, so it is 45 years old, younger 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 5,000 vehicles a day, roughly 5% of them trucks, projected to reach 6,285 by 2045. The structure is 215 ft (65.4 m) long and 91 ft wide. If it were closed, the detour would be 14.9 mi (24 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Union Road over ST RTE 120 built?
It was built in 1980, making it 45 years old in 2025. It was reconstructed in 2021.
What condition is Union Road over ST RTE 120 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 May 2023.
How much traffic does Union Road over ST RTE 120 carry?
About 5,000 vehicles per day (2009 count), of which roughly 5% are trucks.
How long is Union Road over ST RTE 120?
The structure is 215 ft (65.4 m) long with a longest span of 107 ft (32.5 m) and a deck 91 ft wide.
Who owns Union Road over ST RTE 120?
It is owned by the State Highway Agency.