Bridge conditions in Porter County, Indiana
279 inventoried bridges · 13 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 279 bridges in Porter County: 115 rated good, 151 fair, and 13 poor.
- 13 of the 279 bridges in Porter County, Indiana, are rated in poor condition (4.7%) in the 2025 National Bridge Inventory, as of .
- 115 bridges (41.2%) are rated good and 151 (54.1%) fair.
- The median Porter County bridge was built in 1969.
- The busiest poor-rated bridge is I-94 WB over US 20 Eb/wb (built 1969), carrying about 40,435 vehicles a day.
Good 41.2% · Fair 54.1% · Poor 4.7% of 279 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 |
|---|---|---|---|
| I-94 WB over US 20 Eb/wb | 1969 | 40,435 | Poor |
| US 12 EB over Burns Ditch (deep River) | 1970 | 4,635 | Poor |
| SR 249G Nelson Dr over US 12 2 RR 2 Roads | 2000 | 4,256 | Poor |
| CR 200W over Damon Run | 1968 | 3,230 | Poor |
| Lenburg Road over Salt Creek | 1968 | 3,140 | Poor |
| US 12 WB over Burns Ditch (deep River) | 1970 | 1,763 | Poor |
| CR 600N over Salt Creek | 1970 | 1,670 | Poor |
| Mineral Spring over Little Calumet River | 1964 | 400 | Poor |
| CR 300S over Ludington Ditch | 1972 | 340 | Poor |
| Division Road over Hutton Ditch | 1961 | 190 | Poor |
| Wilson Road over Dunes Creek | 1934 | 143 | Poor |
| CR 300W over Cornell Ditch | 1930 | 110 | Poor |
| CR 600E over Crooked Creek | 1971 | 80 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-94 EB over US 20 Willow CR CSX RR | 1966 | 83,652 | Good |
| I-94 EB over NS RR | 1969 | 80,516 | Fair |
| I-94 EB over Beam Street | 1969 | 80,516 | Fair |
| I-94 WB over Little Calumet River | 1969 | 80,516 | Good |
| I-94 EB over Jensen Dr | 1968 | 70,574 | Fair |
| I-94 EB over CSX RR | 1969 | 57,732 | Fair |
| I-94 WB over US 20 Willow CR CSX RR | 1966 | 42,223 | Good |
| I-94 WB over US 20 Eb/wb | 1969 | 40,435 | Poor |
| I-94 WB over Beam Street | 1969 | 40,435 | Good |
| I-94 WB over Amtrak | 1969 | 40,435 | 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.