Sonora Road over Martells Creek
PoorStanislaus County, California · 0.1MI E Frankenheimer RD · Structure no. 38C0272
- Built
- 1920
- 105 years old
- Condition
- Poor
- inspected September 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 81 ft
- 4 main spans
- Daily traffic
- 182
- 2016 count
- Owner
- County
- County Highway Agency
About this bridge
Sonora Road over Martells Creek is a concrete continuous tee beam carrying Sonora Road over Martells Creek in Stanislaus County, California. It was built in 1920, so it is 105 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 182 vehicles a day, roughly 25% of them trucks, projected to reach 240 by 2043. The structure is 81 ft (24.7 m) long and 22 ft wide. If it were closed, the detour would be 24.2 mi (39 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sonora Road over Martells Creek built?
It was built in 1920, making it 105 years old in 2025.
What condition is Sonora Road over Martells 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 September 2023.
How much traffic does Sonora Road over Martells Creek carry?
About 182 vehicles per day (2016 count), of which roughly 25% are trucks.
How long is Sonora Road over Martells Creek?
The structure is 81 ft (24.7 m) long with a longest span of 20 ft (6.1 m) and a deck 22 ft wide.
Who owns Sonora Road over Martells Creek?
It is owned by the County Highway Agency.