York RD over Missouri River
Fair Condition44 years old551 vehicles/day
Location
| State | Montana |
| County | Lewis and Clark |
| Location | 14m NE Helena |
| Carries | York RD |
| Crosses | Missouri River |
| Coordinates | 46.71328, -111.80608 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 1079.7 ft (329.1 m) |
| Max Span | 120.1 ft (36.6 m) |
| Deck Width | 34.4 ft (10.5 m) |
| Deck Area | 3455.6 sq m |
| Main Spans | 9 |
| Year Built | 1982 |
Traffic
| Avg Daily Traffic | 551 (2023) |
| Truck Traffic | 15% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | S00280012+00001 |