Bridge conditions in Decatur County, Indiana
220 inventoried bridges · 13 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
13 of the 220 bridges the federal inventory lists in Decatur County are rated poor; the rest split 73 good and 134 fair.
- 13 of the 220 bridges in Decatur County, Indiana, are rated in poor condition (5.9%) in the 2025 National Bridge Inventory, as of .
- 73 bridges (33.2%) are rated good and 134 (60.9%) fair.
- The median Decatur County bridge was built in 1980.
- The busiest poor-rated bridge is Main St over Millstone Creek (built 1935), carrying about 1,210 vehicles a day.
Good 33.2% · Fair 60.9% · Poor 5.9% of 220 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Main St over Millstone Creek | 1935 | 1,210 | Poor |
| CR 700W over Clifty Creek | 1890 | 430 | Poor |
| CR 900S over Square Run | 1925 | 250 | Poor |
| CR 200S over Clifty Creek | 1912 | 180 | Poor |
| CR 225E over Middle Fork Clifty Creek | 1890 | 140 | Poor |
| CR 400E over South Br Clifty Creek | 1975 | 140 | Poor |
| CR 120E over Muddy Fork of Sand Creek | 1979 | 140 | Poor |
| CR 50N over Salt Creek | 1915 | 140 | Poor |
| CR 200E over South Br Clifty Creek | 1979 | 110 | Poor |
| CR 950E over Salt Creek | 1930 | 110 | Poor |
| CR 180E over Cobbs Fork Sand Creek | 1895 | 110 | Poor |
| CR 750 W over Br Fall Fork Clifty Cree | 1925 | 110 | Poor |
| CR 1000W over Fall Fork Clifty Creek | 1923 | 110 | Poor |
Busiest bridges in the 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 |
| I-74 Wbl over Mill Creek | 1961 | 10,341 | Good |
| I-74 Ebl over Clifty Creek | 1962 | 10,341 | Good |
| US 421 over Sand Creek | 1966 | 9,810 | Good |
| I-74 EB over Sand Creek | 1961 | 9,256 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Indiana: Indiana bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.