1st AVE over Big Ditch
Good Condition58 years old3,046 vehicles/day
Location
| State | Montana |
| County | Yellowstone |
| Location | Laurel-1st AVE |
| Carries | 1st AVE |
| Crosses | Big Ditch |
| Coordinates | 45.68325, -108.77155 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 37.1 ft (11.3 m) |
| Max Span | 35.1 ft (10.7 m) |
| Deck Width | 42.7 ft (13 m) |
| Deck Area | 146.9 sq m |
| Main Spans | 1 |
| Year Built | 1968 |
Traffic
| Avg Daily Traffic | 3,046 (2023) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | U06901000+09431 |