Winnebago County, IL
475 public highway bridges
Winnebago County Bridge Snapshot
Winnebago County, Illinois contains 475 public highway bridges in the FHWA National Bridge Inventory. Roughly 27.8% are rated “Good,” 49.7% “Fair,” 6.1% “Poor,” and 6.1% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.
Inspections in IL are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Condition Distribution
All Bridges (475)
GILBERT AVE
PoorOver: NW DRAINAGEWAY
0.25 MI W OF KILBURN, Winnebago, IL
HAMBORG ROAD
PoorOver: STONEBRIDGE TRAIL
0.25 M E OF I-90, Winnebago, IL
LATHAM-RALSTON RD
PoorOver: ROCK RIVER
1 MI. E. ILL 2, Winnebago, IL
SIMPSON ROAD
PoorOver: FULLERS CR
0.2 MI E PRAIRIE RD, Winnebago, IL
SAUNDERS RD
PoorOver: UNNAMED CREEK
3.5 MI E OF PECATONI, Winnebago, IL
CENTERVILLE ROAD
PoorOver: SO FORK KENT CREEK
0.1 MI S CUNNINGHAM, Winnebago, IL
11TH STREET
PoorOver: KEITH CREEK
0.52 N BROADWAY, Winnebago, IL
MERIDIAN RD
PoorOver: CN RR
0.5 MI S CUNNINGHAM, Winnebago, IL
PRAIRIE HILL RD
PoorOver: ROCK RIVER
0.4 MI W ILL 2, Winnebago, IL
ILL 70
PoorOver: TRIB. OF PECATONICA
.5 MI W CEMETERY RD, Winnebago, IL
WINNEBAGO STREET
PoorOver: KENT CR & RR TRACKS
0.4 MI S OF STATE ST, Winnebago, IL
ILL 251 S B
PoorOver: UP RR
2.5 MI SOUTH ILL 75, Winnebago, IL
ILL 251 N B
PoorOver: UP RR
2.5 MI S ILL 75, Winnebago, IL
15TH AVE
PoorOver: ROCK RIVER
0.01 M E OF MAIN, Winnebago, IL
IL 70
PoorOver: TRIB. OF PECATONICA
.6 MI W CEMETERY RD, Winnebago, IL
ILL 70
PoorOver: TRIB. OF PECATONICA
.1 MI W CEMETERY RD, Winnebago, IL
JONATHAN AVE
PoorOver: NW DRAINAGEWAY
0.1 MI E OF ROCKTON, Winnebago, IL
AUBURN ST.
PoorOver: KENT CREEK
0.1 MI W OF KILBURN, Winnebago, IL
ROSCOE RD
Structurally DeficientOver: ROCK RIVER
0.2 MI. W. IL 251, Winnebago, IL
8TH AV
Structurally DeficientOver: KEITH CREEK
0.05 MI E KISHWAUKEE, Winnebago, IL
GOEKE ROAD
Structurally DeficientOver: PINK CREEK
100FT N BRICK SCH RD, Winnebago, IL
GLEASMAN ROAD
Structurally DeficientOver: UNNAMED CREEK
0.2 MI E ROCKTON AVE, Winnebago, IL
CORBIN ST
Structurally DeficientOver: KENT CREEK
0.15 MI N CUNNINGHAM, Winnebago, IL
MERIDIAN RD
Structurally DeficientOver: PECATONICARIVER
0.7 MI SE SHIRLAND, Winnebago, IL
CUNNINGHAM RD
Structurally DeficientOver: CN RR
0.5 MI E PIERPONT, Winnebago, IL
Read our methodology — how this data is sourced, computed, and verified.
Related
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |