Irr Bia Rte 6 over Little Gilson Wash
Gila County, Arizona · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Irr Bia Rte 6 over Little Gilson Wash in Gila County, Arizona, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1990 and reconstructed in 2017, making it 35 years old at the 2025 inventory.
- It carries about 2,000 vehicles a day (traffic count year 2021).
- It is one of 108 of the 259 inventoried bridges in Gila County rated fair (41.7%); 4 (1.5%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (33.35034, -110.45478)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Aluminum or iron culvert |
| Length | about 41 ft |
| Location | Cutter Rd and Apache Ave |
| NBI structure number | 0000H58616B0825 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Arizona department of transportation.
Busiest bridges in Gila County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 60 over Pinal Creek | 1920 | 22,518 | Fair |
| US 60 over Pinal Creek | 1942 | 21,948 | Fair |
| US 60 over Wash | 1949 | 16,468 | Fair |
| US 60 over Wash | 1949 | 16,468 | Fair |
| US 60 over Pinal Creek | 1959 | 16,320 | Fair |
| US 60 over McMillen Wash | 1930 | 16,297 | Fair |
All bridges nearby: Gila County, AZ bridge conditions · every bridge in Gila County · Arizona bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.