S 80-13th ST over Missouri River
Poor Condition64 years old930 vehicles/day
Location
| State | Montana |
| County | Chouteau |
| Location | Fort Benton-13th ST |
| Carries | S 80-13th ST |
| Crosses | Missouri River |
| Coordinates | 47.81501, -110.66715 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Girder and Floorbeam |
| Total Length | 708.0 ft (215.8 m) |
| Max Span | 186.0 ft (56.7 m) |
| Deck Width | 27.9 ft (8.5 m) |
| Deck Area | 1834.3 sq m |
| Main Spans | 4 |
| Year Built | 1962 |
Traffic
| Avg Daily Traffic | 930 (2023) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00080002+04331 |