Irr Bia Rte 3 over Acorn Draw
Graham County, Arizona · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Irr Bia Rte 3 over Acorn Draw in Graham County, Arizona, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1929, making it 96 years old at the 2025 inventory.
- It carries about 120 vehicles a day (traffic count year 2024).
- It is one of 7 of the 181 inventoried bridges in Graham County rated poor (3.9%); 7 (3.9%) are rated poor.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (33.19097, -110.26944)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 4 | Poor condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 80 ft |
| Location | 29.6 Km E of Coolidge Dam |
| NBI structure number | 00000000000H187 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Arizona department of transportation.
Busiest bridges in Graham County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| 8th Street over Graveyard Wash | 1920 | 14,272 | Fair |
| US 70 over Graveyard Wash | 1948 | 14,272 | Fair |
| US 191 over Union Canal | 1958 | 9,321 | Good |
| US 70 over Stockton Wash | 1950 | 8,642 | Fair |
| Irr US 70 over Ash Creek | 1948 | 8,534 | Fair |
| US 191 over Graveyard Wash | 1958 | 8,018 | Good |
All bridges nearby: Graham County, AZ bridge conditions · every bridge in Graham County · Arizona bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.