SR 46 over Muddy Fork Sand Creek
Decatur County, Indiana · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 46 over Muddy Fork Sand Creek in Decatur County, Indiana, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1954, making it 71 years old at the 2025 inventory.
- It carries about 6,843 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 134 of the 220 inventoried bridges in Decatur County rated fair (60.9%); 13 (5.9%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (39.33592, -85.51209)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 62 ft |
| Location | 00.59 E SR 3 |
| NBI structure number | 017400 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Indiana department of transportation.
Busiest bridges in Decatur County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 421 over Muddy Fork Sand Creek | 2008 | 13,901 | Fair |
| SR 3 over I-74 Eb/wb | 1962 | 13,680 | Fair |
| I-74 Wbl over Clifty Creek | 1962 | 11,344 | Fair |
| I-74 EB over Flatrock River | 1961 | 11,343 | Fair |
| I-74 WB over Flatrock River | 1961 | 11,343 | Fair |
| I-74 Ebl over Mill Creek | 1961 | 10,341 | Good |
All bridges nearby: Decatur County, IN bridge conditions · every bridge in Decatur County · Indiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.