N 18th RD over Arrow Creek 150
Fair Condition39 years old52 vehicles/day
Location
| State | Montana |
| County | Yellowstone |
| Location | 3m NE Worden |
| Carries | N 18th RD |
| Crosses | Arrow Creek 150 |
| Coordinates | 45.98545, -108.13277 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 55.1 ft (16.8 m) |
| Max Span | 53.1 ft (16.2 m) |
| Deck Width | 31.8 ft (9.7 m) |
| Deck Area | 163.0 sq m |
| Main Spans | 1 |
| Year Built | 1987 |
Traffic
| Avg Daily Traffic | 52 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L56085001+07001 |