IRR County Road 20 over Smoke Creek 016
Fair Condition71 years old100 vehicles/day
Location
| State | Montana |
| County | Roosevelt |
| Location | 21m N Brockton |
| Carries | IRR County Road 20 |
| Crosses | Smoke Creek 016 |
| Coordinates | 48.47628, -104.95167 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Truss - Thru |
| Total Length | 94.2 ft (28.7 m) |
| Max Span | 89.9 ft (27.4 m) |
| Deck Width | 21.3 ft (6.5 m) |
| Deck Area | 186.6 sq m |
| Main Spans | 1 |
| Year Built | 1955 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L43205005+09001 |