Irr Bia Rte N26 over Bis Li Ah Wash
Apache County, Arizona · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Irr Bia Rte N26 over Bis Li Ah Wash in Apache 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 1976, making it 49 years old at the 2025 inventory.
- It carries about 300 vehicles a day (traffic count year 2023).
- It is one of 16 of the 258 inventoried bridges in Apache County rated poor (6.2%); 16 (6.2%) are rated poor.
- Its traffic status in the 2025 inventory is open, posting recommended but not legally implemented (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated April 2023, on a 24-month routine inspection cycle.
- 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 → (35.92242, -109.56372)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 4 | 4 | Poor condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 182 ft |
| Location | 4 Mi East of Az Hwy 191 |
| NBI structure number | 00000000000N521 |
| Condition class | Poor |
| Traffic status (item 41) | Open, posting recommended but not legally implemented |
| Last inspection (item 90) | April 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Arizona department of transportation.
Busiest bridges in Apache County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Irr I 40; EB over Black Creek | 1967 | 25,552 | Fair |
| Irr I 40; EB & WB over Wash | 1964 | 25,270 | Good |
| Irr I 40; EB & WB over Cedar Point Wash | 1949 | 25,270 | Good |
| Irr I 40; EB & WB over Wash | 1963 | 22,521 | Good |
| Irr I 40; EB & WB over Wash | 1966 | 22,224 | Fair |
| Irr I 40; EB & WB over Wash | 1962 | 22,224 | Good |
All bridges nearby: Apache County, AZ bridge conditions · every bridge in Apache County · Arizona bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.