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)

HORACE AVE

Good

Over: KENT CREEK

0.7 MI S OF STATE ST, Winnebago, IL

Built 2006 Load: 42.1 t ADT: 1,350

PERRYVILLE ROAD

Good

Over: S BR KISHWAUKEE RIV.

0.3 MI N BLACKHAWK, Winnebago, IL

Built 1971 Load: 42.8 t ADT: 3,200

FAS-40 (YEALE BR R

Good

Over: SUGAR CREEK

6 MI NE DURAND, Winnebago, IL

Built 2022 Load: 42.8 t ADT: 575

PIERCE AVE

Good

Over: NW DRAINAGEWAY

0.05 MI E OF ROCKTON, Winnebago, IL

Built 1962 Load: 42.8 t ADT: 350

US 20 BR

Good

Over: KEITH CREEK

.75 MI W ALPINE RD, Winnebago, IL

Built 1993 Load: 43.1 t ADT: 20,100

BURDEN ROAD

Good

Over: BR ROCK RIVER

0.2 MI N RT 173, Winnebago, IL

Built 1966 Load: 43.1 t ADT: 2,550

MAIN STREET

Good

Over: KINNIKINNICK CREEK

IN ROSCOE, Winnebago, IL

Built 2000 Load: 43.1 t ADT: 5,600

MORSAY DR

Good

Over: KEITH CREEK,NORTH BR

0.03 MI E FAIRVIEW, Winnebago, IL

Built 1967 Load: 43.4 t ADT: 3,000

JACKSON STREET

Good

Over: UNNAMED STREAM

EAST EDGE PECATONICA, Winnebago, IL

Built 2000 Load: 43.7 t ADT: 750

STONERIDGE DR

Good

Over: SPRING CREEK

0.1 MI N SPRG CK RD, Winnebago, IL

Built 2011 Load: 44.4 t ADT: 100

MERIDIAN RD

Good

Over: ROCK CREEK

0.25 M S SIMPSON RD, Winnebago, IL

Built 1982 Load: 44.7 t ADT: 1,000

IL 251 NB

Good

Over: KILBUCK CREEK

.6 MI N. OGLE CO.LN., Winnebago, IL

Built 1989 Load: 45.0 t ADT: 4,450

COMLY ROAD

Good

Over: GROVE CREEK

2 MI S OF PECATONICA, Winnebago, IL

Built 1987 Load: 45.4 t ADT: 150

ROCKTON RD

Good

Over: DRY RUN CREEK

.5 MI E IL 251, Winnebago, IL

Built 2013 Load: 45.4 t ADT: 9,150

FOREST HILL ROAD

Good

Over: WILLOW CREEK

1.6 M S ILL 173, Winnebago, IL

Built 1981 Load: 45.7 t ADT: 11,300

PERRYVILLE ROAD

Good

Over: N KISHWAUKEE RVR

0.4 MI N BLACKHAWK, Winnebago, IL

Built 1971 Load: 46.3 t ADT: 3,200

PRAIRIE HILL RD

Good

Over: DRY CREEK RUN

AT WILLOWBROOK RD, Winnebago, IL

Built 2007 Load: 46.7 t ADT: 4,050

TRAINER ROAD

Good

Over: SPRING CREEK

.25 MI N. OF SPRING BROOK, Winnebago, IL

Built 1991 Load: 47.0 t ADT: 1,100

PORTER ROAD

Good

Over: BR KENT CREEK

.33 M E MERIDIAN RD, Winnebago, IL

Built 1979 Load: 47.0 t ADT: 525

CH 52(WILLOW BROOK

Good

Over: BRANCH OF DRY CREEK

0.5 MI S ROCKTON RD, Winnebago, IL

Built 2004 Load: 47.6 t ADT: 5,650

MATERIAL AVE.

Good

Over: LOVES PARK CREEK

0.3 MI. S. WINDSOR, Winnebago, IL

Built 1992 Load: 49.6 t ADT: 2,300

S. CENTRAL AVENUE

Good

Over: S. BR. OF KENT CREEK

0.06 MI S OF PRESTON, Winnebago, IL

Built 1975 Load: 50.9 t ADT: 3,400

US 20 W B

Good

Over: E CHANNEL ROCK RIV

.7 MI E OF ILL 2, Winnebago, IL

Built 2015 Load: 51.8 t ADT: 32,000

PERRYVILLE RD

Good

Over: UNNAMED CREEK

0.03MI N OF IL 173, Winnebago, IL

Built 2004 Load: 51.8 t ADT: 7,800

MS-8810 Inter. Blv

Good

Over: Spring Creek

.5MI N RIVERSIDE BLV, Winnebago, IL

Built 2016 Load: 52.2 t ADT: 1,700

LYFORD RD

Good

Over: KEITH CREEK

E. EDGE OF ROCKFORD, Winnebago, IL

Built 2017 Load: 53.5 t ADT: 2,750

PARK ACCESS RD

Good

Over: ROCK CUT SPILLWAY

ROCK CUT ST PARK, Winnebago, IL

Built 2019 Load: 53.5 t ADT: 775

US 20 W B

Good

Over: W CHANNEL ROCK RIV

.5 MI E OF ILL 2, Winnebago, IL

Built 2015 Load: 53.8 t ADT: 32,000

BORG WARNER ENTRAN

Good

Over: DRAINAGE WAY

.21 MI W 20TH ST, Winnebago, IL

Built 2016 Load: 53.8 t ADT: 2,050

SPRING CREEK ROAD

Good

Over: SPRING CREEK

EAST OF ALPINE RAOD, Winnebago, IL

Built 2001 Load: 55.4 t ADT: 21,000

OLDE CREEK RD

Good

Over: KEITH CREEK

0.2 MI E PERRYVILLE, Winnebago, IL

Built 2003 Load: 55.7 t ADT: 6,200

MULFORD ROAD

Good

Over: S BR KEITH CR

0.3 MI N RT 20, Winnebago, IL

Built 1971 Load: 56.4 t ADT: 21,600

ATWOOD ROAD

Good

Over: MCDONALD CREEK

AT MCMICHAEL ROAD, Winnebago, IL

Built 1976 Load: 56.4 t ADT: 2,050

LOGISTICS PKWY

Good

Over: CREEK

.04MI N BLACKHAWK RD, Winnebago, IL

Built 2006 Load: 57.0 t ADT: 375

CAMPBELL ROAD

Good

Over: HUNGRY RUN CREEK

0.5 M E OF MOATE RD, Winnebago, IL

Built 1984 Load: 60.9 t ADT: 50

LUANNA DRIVE

Good

Over: PRIVATE LAKE

LAKE LEANNA SUB., Winnebago, IL

Built 1978 Load: 62.9 t ADT: 200

IL 75

Good

Over: CREEK

.06MI SW ROCKTON AVE, Winnebago, IL

Built 2010 Load: 66.1 t ADT: 2,250

TR-100 (Weldon Rd)

Good

Over: S BR OF KENT CRK

2 MI E OF WINNEBAGO, Winnebago, IL

Built 2018 Load: 67.1 t ADT: 800

NORTH ALPINE

Good

Over: BRANCH OF KEITH CRK

.5 MI N OF STATE ST, Winnebago, IL

Built 2018 Load: 69.7 t ADT: 19,000

BAKER RD

Good

Over: UNNAMED CREEK

0.3 MI E CROWLEY RD, Winnebago, IL

Built 1977 Load: 84.6 t ADT: 150

PERRYVILLE RD

Good

Over: UNNAMED CREEK

.6 MI. S. IL 173, Winnebago, IL

Built 1998 Load: 88.8 t ADT: 15,300

IL 75

Good

Over: DRAINAGE DITCH

0.36 E OF IL 70, Winnebago, IL

Built 2011 Load: 89.1 t ADT: 2,600

I-90

Good

Over: S KINNIKINNICK CREEK

1 MI E OF ROSCOE, Winnebago, IL

Built 1958 Load: 89.1 t ADT: 28,550

I-90

Good

Over: STREAM

1 MI S OF ILL 173, Winnebago, IL

Built 1958 Load: 89.1 t ADT: 30,700

I-90

Good

Over: N KINNIKINNICK CREEK

1 MI E OF ROSCOE, Winnebago, IL

Built 1958 Load: 93.3 t ADT: 28,550

I-90

Good

Over: STREAM

.6 MI S RIVERSIDE BL, Winnebago, IL

Built 1958 Load: 96.2 t ADT: 33,150

ROSCOE RD

Poor

Over: ROCK RIVER

0.2 MI. W. IL 251, Winnebago, IL

Built 1967 ADT: 10,700

8TH AV

Poor

Over: KEITH CREEK

0.05 MI E KISHWAUKEE, Winnebago, IL

Built 1919 Load: 5.5 t ADT: 375

ELM STREET-ROCKFOR

Poor

Over: KENT CREEK

0.5 MI W OF DOWNTOWN, Winnebago, IL

Built 1992 Load: 10.4 t ADT: 35

KILBUCK BLUFF FP

Poor

Over: BR KILBUCK CR

BY KILBUCK CREEK, Winnebago, IL

Built 1926 Load: 14.3 t ADT: 475

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.