Blewett Road over California Aqueduct
PoorSan Joaquin County, California · 1.3 MI W Koster RD · Structure no. 29C0371
- Built
- 1967
- 58 years old
- Condition
- Poor
- inspected June 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 144 ft
- 2 main spans
- Daily traffic
- 200
- 2009 count
- Owner
- State
- Other State Agency
About this bridge
Blewett Road over California Aqueduct is a concrete continuous tee beam carrying Blewett Road over California Aqueduct in San Joaquin County, California. It was built in 1967, so it is 58 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 200 vehicles a day, roughly 10% of them trucks, projected to reach 324 by 2046. The structure is 144 ft (43.8 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Blewett Road over California Aqueduct built?
It was built in 1967, making it 58 years old in 2025.
What condition is Blewett Road over California Aqueduct 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 June 2024.
How much traffic does Blewett Road over California Aqueduct carry?
About 200 vehicles per day (2009 count), of which roughly 10% are trucks.
How long is Blewett Road over California Aqueduct?
The structure is 144 ft (43.8 m) long with a longest span of 72 ft (21.9 m) and a deck 34 ft wide.
Who owns Blewett Road over California Aqueduct?
It is owned by the Other State Agency and maintained by the County Highway Agency.