Frontage Road 614 over Int Sep I 15
Good Condition48 years old100 vehicles/day
Location
| State | Montana |
| County | Cascade |
| Location | 4m SW Cascade |
| Carries | Frontage Road 614 |
| Crosses | Int Sep I 15 |
| Coordinates | 47.22014, -111.77706 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 260.5 ft (79.4 m) |
| Max Span | 86.6 ft (26.4 m) |
| Deck Width | 34.1 ft (10.4 m) |
| Deck Area | 825.8 sq m |
| Main Spans | 4 |
| Year Built | 1978 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L07614000+01601 |