East Side Road over Rock Creek
Good Condition3 years old100 vehicles/day
Location
| State | Montana |
| County | Carbon |
| Location | 4m S Red Lodge |
| Carries | East Side Road |
| Crosses | Rock Creek |
| Coordinates | 45.12067, -109.29664 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 78.1 ft (23.8 m) |
| Max Span | 76.1 ft (23.2 m) |
| Deck Width | 29.9 ft (9.1 m) |
| Deck Area | 216.6 sq m |
| Main Spans | 1 |
| Year Built | 2023 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000202302372 |