Bridge conditions in Johnson County, Indiana
230 inventoried bridges · 23 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Johnson County has 23 bridges rated poor out of 230 inventoried, a 10.0% share that puts it well above the national rate of about 7%.
- 23 of the 230 bridges in Johnson County, Indiana, are rated in poor condition (10.0%) in the 2025 National Bridge Inventory, as of .
- 92 bridges (40.0%) are rated good and 115 (50.0%) fair.
- The median Johnson County bridge was built in 1985.
- The busiest poor-rated bridge is Smith Valley Road over Conrail Railroad (built 1972), carrying about 16,930 vehicles a day.
Good 40.0% · Fair 50.0% · Poor 10.0% of 230 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 |
|---|---|---|---|
| Smith Valley Road over Conrail Railroad | 1972 | 16,930 | Poor |
| CR 500 North over Grassy Creek | 1985 | 7,111 | Poor |
| CR 700 North over Leatherwood Creek | 1950 | 3,191 | Poor |
| CR 700 North over Campbell Ditch | 1978 | 3,191 | Poor |
| CR 300 South over Vandiver Ditch | 1978 | 2,540 | Poor |
| Leisure Lane over Pleasant Run Creek | 1955 | 2,061 | Poor |
| CR 500 West over Indian Creek | 1982 | 900 | Poor |
| CR 575 West over South Prong Stotts CR | 1978 | 900 | Poor |
| CR 575 West over North Prong Stotts CR | 1968 | 900 | Poor |
| CR 400 S over I-65 | 1969 | 712 | Poor |
| CR 400 South over Sugar Creek | 1978 | 712 | Poor |
| Fry Road over Pleasant Run Creek | 1987 | 600 | Poor |
| CR 700 East over Little Sugar Creek | 1972 | 369 | Poor |
| CR 625 West over Crooked Creek | 1960 | 363 | Poor |
| CR 550E (old US 31 over Sugar Creek | 1925 | 324 | Poor |
| CR 250 South over Youngs Creek | 1970 | 275 | Poor |
| CR 450 West over Goose Creek | 1975 | 269 | Poor |
| CR 225 West over Roberts Ditch | 1984 | 258 | Poor |
| Division Road over North Prong Stotts CR | 1979 | 102 | Poor |
| Woodland Streams over Waterloo Run | 1980 | 100 | Poor |
| CR 550 South over Herriotts Creek | 1984 | 88 | Poor |
| CR 350 South over Amity Ditch | 1960 | 65 | Poor |
| CR 750 West over Henderson Creek | 1935 | 41 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-65 over Drainage Ditch | 1971 | 92,074 | Good |
| I-65 over Drainage Ditch | 1969 | 55,807 | Fair |
| SR 37 Sbl over Bluff Creek | 2023 | 47,800 | Good |
| SR 37 Nbsb over North Bluff Creek | 2022 | 47,800 | Good |
| I-65 NB over Hurricane Creek | 2017 | 38,171 | Good |
| I-65 NB over Greenwood RD/950 N | 2016 | 37,414 | Good |
| I-65 SB over Greenwood RD/950 N | 2016 | 34,692 | Good |
| SR 37 NB & Ramp over County Line Road | 2023 | 34,050 | Good |
| SR 37 SB over County Line Road | 2022 | 34,050 | Good |
| US 31 over Pleasant Run Creek | 1991 | 33,232 | 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.