Avenue 25 over Ash Slough
Madera County, California · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Avenue 25 over Ash Slough in Madera County, California, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2024, making it 1 years old at the 2025 inventory.
- It carries about 1,000 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 95 of the 250 inventoried bridges in Madera County rated good (38.0%); 24 (9.6%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (37.11383, -120.32087)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 8 | Very good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 319 ft |
| Location | 0.5 Mi E of Road 12 |
| NBI structure number | 41C0222 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the California department of transportation.
Busiest bridges in Madera County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| State Route 99 over Fresno River | 1989 | 68,000 | Good |
| State Route 99 over Little Dry Creek | 1912 | 67,000 | Fair |
| State Route 99 over SR 99 | 1973 | 65,000 | Good |
| State Route 99 over San Joaquin River | 2015 | 64,000 | Fair |
| State Route 99 over Berenda Creek | 1949 | 56,000 | Fair |
| State Route 99 over Chowchilla River | 1995 | 37,500 | Fair |
All bridges nearby: Madera County, CA bridge conditions · every bridge in Madera County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.