Bridge conditions in Douglas County, Illinois
233 inventoried bridges · 4 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
4 of the 233 bridges the federal inventory lists in Douglas County are rated poor; the rest split 173 good and 56 fair.
- 4 of the 233 bridges in Douglas County, Illinois, are rated in poor condition (1.7%) in the 2025 National Bridge Inventory, as of .
- 173 bridges (74.2%) are rated good and 56 (24.0%) fair.
- The median Douglas County bridge was built in 1986.
- The busiest poor-rated bridge is Fap 323(US 36) over Kaskaskia River (built 1927), carrying about 3,550 vehicles a day.
Good 74.2% · Fair 24.0% · Poor 1.7% of 233 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 |
|---|---|---|---|
| Fap 323(US 36) over Kaskaskia River | 1927 | 3,550 | Poor |
| Fas 669(CH 7) over Brushy Fork | 1933 | 500 | Poor |
| Main St (MS#2300) over Embarras River | 1955 | 225 | Poor |
| Tr 49 over Hackett Branch | 1956 | 225 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-57 over Stream | 1968 | 22,700 | Good |
| I-57 (NB) over Fap 323(US 36) | 1968 | 11,050 | Good |
| I-57 (SB) over Fap 323(US 36) | 1968 | 11,050 | Good |
| I-57 (NB) over UPRR & Decatur&Estrn ILR | 1969 | 11,050 | Fair |
| I-57 (SB) over UPRR & Decatur&Estrn ILR | 1969 | 11,050 | Fair |
| I-57 (NB) over Hayes Branch | 1969 | 11,050 | Fair |
| I-57 (SB) over Hayes Branch | 1969 | 11,050 | Fair |
| I-57 (NB) over Cnrl Rr/bike Tr | 1968 | 10,150 | Fair |
| I-57 (SB) over Cnrl Rr/bike Tr | 1968 | 10,150 | Fair |
| I-57 (NB) over Drainage Ditch | 1968 | 10,150 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Illinois: Illinois 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.