Irr Bia Rte 3 over Boot Wash
Gila County, Arizona · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Irr Bia Rte 3 over Boot Wash in Gila County, Arizona, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1969, making it 56 years old at the 2025 inventory.
- It carries about 514 vehicles a day (traffic count year 2024).
- It is one of 108 of the 259 inventoried bridges in Gila County rated fair (41.7%); 4 (1.5%) are rated poor.
- Its traffic status in the 2025 inventory is posted for another load-capacity restriction (speed, number of vehicles on the bridge, etc.) (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated January 2024, on a 24-month routine inspection cycle.
- 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 → (33.26131, -110.46381)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Concrete stringer or multi-beam girder |
| Length | about 210 ft |
| Location | 4.2 Km S of Az 70/170 Jct |
| NBI structure number | 00000000000H164 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for another load-capacity restriction (speed, number of vehicles on the bridge, etc.) |
| Last inspection (item 90) | January 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
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.