404th Avenue over Trib Twelve Mile Ck
Fair Condition76 years old35 vehicles/day
Location
| State | South Dakota |
| County | Davison |
| Location | 7w & 0.3n Ethan |
| Carries | 404th Avenue |
| Crosses | Trib Twelve Mile Ck |
| Coordinates | 43.54658, -98.12460 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 7 (Good) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 25.9 ft (7.9 m) |
| Max Span | 11.5 ft (3.5 m) |
| Deck Width | 18.0 ft (5.5 m) |
| Deck Area | 43.5 sq m |
| Main Spans | 2 |
| Year Built | 1950 |
Traffic
| Avg Daily Traffic | 35 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000018100207 |