IRR BIA RTE N12 over Twin Buttes Wash
Fair Condition68 years old7,111 vehicles/day
Location
| State | New Mexico |
| County | McKinley |
| Location | 5 Mi NE Of Fort Defiance |
| Carries | IRR BIA RTE N12 |
| Crosses | Twin Buttes Wash |
| Coordinates | 35.84089, -109.02278 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 3 (Serious) |
| Culvert | 5 (Fair) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Steel |
| Design | Culvert |
| Total Length | 59.1 ft (18 m) |
| Max Span | 15.7 ft (4.8 m) |
| Deck Width | 73.2 ft (22.3 m) |
| Deck Area | 401.4 sq m |
| Main Spans | 3 |
| Year Built | 1958 (reconstructed 1994) |
Traffic
| Avg Daily Traffic | 7,111 (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 | 00000000000N664 |