Thornton Road over Bear Creek
PoorSan Joaquin County, California · 1.4 MI N Davis RD Intrx · Structure no. 29C0191
- Built
- 1960
- 65 years old, rebuilt 1993
- Condition
- Poor
- inspected January 2024
- Type
- Slab
- Concrete Continuous
- Length
- 168 ft
- 6 main spans
- Daily traffic
- 23,500
- 2007 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Thornton Road over Bear Creek is a concrete continuous slab carrying Thornton Road over Bear Creek in San Joaquin County, California. It was built in 1960 and reconstructed in 1993, so it is 65 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 23,500 vehicles a day, roughly 2% of them trucks, projected to reach 17,215 by 2042. The structure is 168 ft (51.2 m) long and 106 ft wide. If it were closed, the detour would be 8.7 mi (14 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Thornton Road over Bear Creek built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1993.
What condition is Thornton Road over Bear Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2024.
How much traffic does Thornton Road over Bear Creek carry?
About 23,500 vehicles per day (2007 count), of which roughly 2% are trucks.
How long is Thornton Road over Bear Creek?
The structure is 168 ft (51.2 m) long with a longest span of 30 ft (9.1 m) and a deck 106 ft wide.
Who owns Thornton Road over Bear Creek?
It is owned by the City or Municipal Highway Agency.