Trident RD over Gallatin River
Fair Condition51 years old496 vehicles/day
Location
| State | Montana |
| County | Gallatin |
| Location | 1m SW Trident |
| Carries | Trident RD |
| Crosses | Gallatin River |
| Coordinates | 45.93726, -111.49151 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 184.1 ft (56.1 m) |
| Max Span | 91.9 ft (28 m) |
| Deck Width | 34.4 ft (10.5 m) |
| Deck Area | 589.0 sq m |
| Main Spans | 2 |
| Year Built | 1975 |
Traffic
| Avg Daily Traffic | 496 (2023) |
| Truck Traffic | 6% |
| 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 | S00286003+00001 |