IRR SR 73 over Post Office Canyon
Fair Condition59 years old7,999 vehicles/day
Location
| State | Arizona |
| County | Navajo |
| Location | 8.8 Mi S Jct SR 260 |
| Carries | IRR SR 73 |
| Crosses | Post Office Canyon |
| Coordinates | 33.97030, -109.92350 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 8 (Very Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 169.0 ft (51.5 m) |
| Max Span | 165.0 ft (50.3 m) |
| Deck Width | 36.7 ft (11.2 m) |
| Deck Area | 576.8 sq m |
| Main Spans | 1 |
| Year Built | 1967 (reconstructed 2022) |
Traffic
| Avg Daily Traffic | 7,999 (2024) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 00981 |