IRR BIA RTE N4 over Polacca Wash
Good Condition33 years old4,035 vehicles/day
Location
| State | Arizona |
| County | Navajo |
| Location | 24 Mi West Of Jct 191 |
| Carries | IRR BIA RTE N4 |
| Crosses | Polacca Wash |
| Coordinates | 36.07225, -110.02461 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 102.0 ft (31.1 m) |
| Max Span | 97.1 ft (29.6 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 304.8 sq m |
| Main Spans | 1 |
| Year Built | 1993 |
Traffic
| Avg Daily Traffic | 4,035 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 323 |
| Inspection Frequency | Every 24 months |
| Owner | Bureau of Indian Affairs |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 00000000000N541 |