Diehl Road over Delta-Mendota Canal
FairStanislaus County, California · 0.5 MI West of Bell Road · Structure no. 38C0296
- Built
- 1948
- 77 years old
- Condition
- Fair
- inspected August 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 105 ft
- 3 main spans
- Daily traffic
- 99
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
Diehl Road over Delta-Mendota Canal is a concrete continuous tee beam carrying Diehl Road over Delta-Mendota Canal in Stanislaus County, California. It was built in 1948, so it is 77 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 99 vehicles a day, roughly 11% of them trucks, projected to reach 199 by 2042. The structure is 105 ft (32 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Diehl Road over Delta-Mendota Canal built?
It was built in 1948, making it 77 years old in 2025.
What condition is Diehl Road over Delta-Mendota Canal in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.
How much traffic does Diehl Road over Delta-Mendota Canal carry?
About 99 vehicles per day (2018 count), of which roughly 11% are trucks.
How long is Diehl Road over Delta-Mendota Canal?
The structure is 105 ft (32 m) long with a longest span of 38 ft (11.6 m) and a deck 29 ft wide.
Who owns Diehl Road over Delta-Mendota Canal?
It is owned by the County Highway Agency.