400th Avenue over Mud Creek
Fair Condition70 years old46 vehicles/day
Location
| State | South Dakota |
| County | Brown |
| Location | 4e & 0.9s Of Stratford |
| Carries | 400th Avenue |
| Crosses | Mud Creek |
| Coordinates | 45.30031, -98.22748 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 186.0 ft (56.7 m) |
| Max Span | 40.0 ft (12.2 m) |
| Deck Width | 28.5 ft (8.7 m) |
| Deck Area | 493.3 sq m |
| Main Spans | 5 |
| Year Built | 1956 |
Traffic
| Avg Daily Traffic | 46 (2022) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | 000000007240439 |