Manthey Road over San Joaquin River
PoorSan Joaquin County, California · 0.2 MI NE of Stewart RD · Structure no. 29C0127
- Built
- 1926
- 99 years old
- Condition
- Poor
- inspected September 2024
- Type
- Truss - Thru
- Steel
- Length
- 537 ft
- 2 main spans
- Daily traffic
- 750
- 1987 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Manthey Road over San Joaquin River is a steel truss - thru carrying Manthey Road over San Joaquin River in San Joaquin County, California. It was built in 1926, so it is 99 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 750 vehicles a day, roughly 5% of them trucks, projected to reach 666 by 2046. The structure is 537 ft (163.6 m) long and 33 ft wide. If it were closed, the detour would be 32.9 mi (53 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Manthey Road over San Joaquin River built?
It was built in 1926, making it 99 years old in 2025.
What condition is Manthey Road over San Joaquin River 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 September 2024.
How much traffic does Manthey Road over San Joaquin River carry?
About 750 vehicles per day (1987 count), of which roughly 5% are trucks.
How long is Manthey Road over San Joaquin River?
The structure is 537 ft (163.6 m) long with a longest span of 200 ft (61.1 m) and a deck 33 ft wide.
Who owns Manthey Road over San Joaquin River?
It is owned by the City or Municipal Highway Agency.