Every bridge in Brown County, Illinois
71 inventoried bridges, busiest first
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Brown County, Illinois, has 71 bridges in the 2025 National Bridge Inventory: 34 rated good, 27 fair, and 10 poor (as of ).
- This index lists every one of them, busiest first; each links to its own condition record.
Source: FHWA National Bridge Inventory, 2025.
Brown County bridge conditions · Illinois bridges by county.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.