Winnebago County, IL

475 public highway bridges

Winnebago County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Winnebago County, Illinois contains 475 public highway bridges. Roughly 27.8% are rated “Good,” 49.7% “Fair,” and 6.1% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

475
Total Bridges
27.8%
Good
49.7%
Fair
6.1%
Poor Condition

Condition Distribution

Good
27.8% (132)
Fair
49.7% (236)
Poor
6.1% (29)

All Bridges (475)

GOEKE ROAD

Poor

Over: PINK CREEK

100FT N BRICK SCH RD, Winnebago, IL

Built 1999 Load: 16.8 t ADT: 75

GLEASMAN ROAD

Poor

Over: UNNAMED CREEK

0.2 MI E ROCKTON AVE, Winnebago, IL

Built 1935 Load: 17.5 t ADT: 800

GUILFORD ROAD

Poor

Over: KEITH CR

0.7 MI E OF ALPINE R, Winnebago, IL

Built 1952 Load: 19.4 t ADT: 10,150

LIBERTY DR

Poor

Over: NW DRAINAGEWAY

0.35 MI W OF KILBURN, Winnebago, IL

Built 1962 Load: 19.4 t ADT: 1,400

GILBERT AVE

Poor

Over: NW DRAINAGEWAY

0.25 MI W OF KILBURN, Winnebago, IL

Built 1962 Load: 22.7 t ADT: 1,150

CORBIN ST

Poor

Over: KENT CREEK

0.15 MI N CUNNINGHAM, Winnebago, IL

Built 1937 Load: 24.0 t ADT: 950

MERIDIAN RD

Poor

Over: PECATONICARIVER

0.7 MI SE SHIRLAND, Winnebago, IL

Built 1973 Load: 26.2 t ADT: 1,650

HAMBORG ROAD

Poor

Over: STONEBRIDGE TRAIL

0.25 M E OF I-90, Winnebago, IL

Built 1981 Load: 26.6 t ADT: 1,100

LATHAM-RALSTON RD

Poor

Over: ROCK RIVER

1 MI. E. ILL 2, Winnebago, IL

Built 1969 Load: 26.9 t ADT: 8,200

SIMPSON ROAD

Poor

Over: FULLERS CR

0.2 MI E PRAIRIE RD, Winnebago, IL

Built 1959 Load: 27.2 t ADT: 700

SAUNDERS RD

Poor

Over: UNNAMED CREEK

3.5 MI E OF PECATONI, Winnebago, IL

Built 1957 Load: 28.8 t ADT: 800

CENTERVILLE ROAD

Poor

Over: SO FORK KENT CREEK

0.1 MI S CUNNINGHAM, Winnebago, IL

Built 1928 Load: 30.5 t ADT: 400

CUNNINGHAM RD

Poor

Over: CN RR

0.5 MI E PIERPONT, Winnebago, IL

Built 1955 Load: 31.4 t ADT: 2,650

11TH STREET

Poor

Over: KEITH CREEK

0.52 N BROADWAY, Winnebago, IL

Built 1915 Load: 32.4 t ADT: 9,300

MERIDIAN RD

Poor

Over: CN RR

0.5 MI S CUNNINGHAM, Winnebago, IL

Built 1954 Load: 33.4 t ADT: 2,450

PRAIRIE HILL RD

Poor

Over: ROCK RIVER

0.4 MI W ILL 2, Winnebago, IL

Built 1966 Load: 34.3 t ADT: 4,200

ILL 70

Poor

Over: TRIB. OF PECATONICA

.5 MI W CEMETERY RD, Winnebago, IL

Built 1982 Load: 35.0 t ADT: 3,500

WINNEBAGO STREET

Poor

Over: KENT CR & RR TRACKS

0.4 MI S OF STATE ST, Winnebago, IL

Built 1982 Load: 36.3 t ADT: 4,900

ILL 251 S B

Poor

Over: UP RR

2.5 MI SOUTH ILL 75, Winnebago, IL

Built 1967 Load: 36.9 t ADT: 13,000

ILL 251 N B

Poor

Over: UP RR

2.5 MI S ILL 75, Winnebago, IL

Built 1967 Load: 36.9 t ADT: 13,000

15TH AVE

Poor

Over: ROCK RIVER

0.01 M E OF MAIN, Winnebago, IL

Built 1980 Load: 37.3 t ADT: 5,750

IL 70

Poor

Over: TRIB. OF PECATONICA

.6 MI W CEMETERY RD, Winnebago, IL

Built 1982 Load: 38.9 t ADT: 3,500

ILL 70

Poor

Over: TRIB. OF PECATONICA

.1 MI W CEMETERY RD, Winnebago, IL

Built 1982 Load: 38.9 t ADT: 2,950

JONATHAN AVE

Poor

Over: NW DRAINAGEWAY

0.1 MI E OF ROCKTON, Winnebago, IL

Built 1962 Load: 44.4 t ADT: 200

AUBURN ST.

Poor

Over: KENT CREEK

0.1 MI W OF KILBURN, Winnebago, IL

Built 1930 Load: 47.6 t ADT: 12,400

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.