Millegan RD over Missouri River
Fair Condition43 years old553 vehicles/day
Location
| State | Montana |
| County | Cascade |
| Location | Ulm |
| Carries | Millegan RD |
| Crosses | Missouri River |
| Coordinates | 47.43048, -111.50257 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 530.2 ft (161.6 m) |
| Max Span | 203.4 ft (62 m) |
| Deck Width | 36.4 ft (11.1 m) |
| Deck Area | 1793.8 sq m |
| Main Spans | 3 |
| Year Built | 1983 |
Traffic
| Avg Daily Traffic | 553 (2023) |
| Truck Traffic | 2% |
| 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 | S00330000+04061 |