87th St. SW over Little Missouri River
Good Condition29 years old25 vehicles/day
Location
| State | North Dakota |
| County | Bowman |
| Location | 10 South Of Marmath |
| Carries | 87th St. SW |
| Crosses | Little Missouri River |
| Coordinates | 46.16489, -103.88793 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 7 (Good) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 42.7 ft (13 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Width | 30.2 ft (9.2 m) |
| Deck Area | 119.6 sq m |
| Main Spans | 4 |
| Year Built | 1997 |
Traffic
| Avg Daily Traffic | 25 (2019) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 48 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000006109080 |