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)

Sort:

I-39 & US 20 SB

Over: UP RR

1.4 MI S OF I-90, Winnebago, IL

Built 1963 Load: 42.1 t ADT: 25,450

I-39 & US 20 N B

Over: UP RR

1.4 MI S OF I-90, Winnebago, IL

Built 1963 Load: 42.1 t ADT: 25,450

BELTLINE RD

Over: N CHANNEL ROCK RIVER

.04 MI SOUTH IL 2, Winnebago, IL

Built 1986 Load: 42.4 t ADT: 10,900

IL 251 W. FR. RD.

Over: MC DONALD CREEK

2.0 MI. N. OF IL 173, Winnebago, IL

Built 1992 Load: 42.4 t ADT: 1,350

CENTER RD

Over: N. BR. OTTER CREEK

0.5 MI N NORTH ST, Winnebago, IL

Built 1990 Load: 42.4 t ADT: 700

ALPINE RD

Over: CN RAILROAD

0.5 MI S HARRISON AV, Winnebago, IL

Built 1963 Load: 42.8 t ADT: 21,200

SCHOOL ST

Over: KENT CREEK

0.2 MI W OF KILBURN, Winnebago, IL

Built 1969 Load: 42.8 t ADT: 6,200

ILL 2

Over: FULLERS CREEK

0.6 MI SOUTH US 20, Winnebago, IL

Built 2011 Load: 43.4 t ADT: 15,500

ILL 251 & FR RDS

Over: WILLOW CREEK

1 MI S JCT ILL 173, Winnebago, IL

Built 1964 Load: 43.4 t ADT: 17,300

MCMICHAEL ROAD

Over: MCDONALD CREEK

0.4 M E BELVIDERE RD, Winnebago, IL

Built 1982 Load: 43.4 t ADT: 300

BELTLINE RD

Over: KISHWAUKEE CK

1.3 MI W OF ILL 251, Winnebago, IL

Built 2010 Load: 44.1 t ADT: 1,650

SWANSON RD

Over: MCDONALD CREEK

0.6 MI E RT 251, Winnebago, IL

Built 1977 Load: 44.1 t ADT: 5,000

MERRILL AVE

Over: LOVES PARK CREEK

CENTER LOVES PARK, Winnebago, IL

Built 1964 Load: 44.1 t ADT: 275

I 90 EB

Over: KISHWAUKEE RIVER

.5 MI N CHERY VALY, Winnebago, IL

Built 2013 Load: 44.1 t ADT: 25,300

IL 251

Over: LOVES PARK CREEK

S OF RIVER LN-LV PK, Winnebago, IL

Built 1995 Load: 44.4 t ADT: 16,300

OLD RIVER RD

Over: UNNAMED CREEK

.5 MI N OF ROSCOE RD, Winnebago, IL

Built 1967 Load: 44.4 t ADT: 2,900

I 90 WB

Over: KISHWAUKEE RIVER

.85 MI E OF I 39, Winnebago, IL

Built 2013 Load: 44.4 t ADT: 25,300

PATTERSON ROAD

Over: UNNAMED CREEK

0.3 MI N OF RT 75, Winnebago, IL

Built 1976 Load: 44.7 t ADT: 275

FAU 5063 - STATE S

Over: ROCK RIVER

DOWNTOWN ROCKFORD, Winnebago, IL

Built 1948 Load: 45.0 t ADT: 6,000

IL 251 SB

Over: KILBUCK CREEK

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

Built 1989 Load: 45.0 t ADT: 4,450

IL 2

Over: DRAINAGE DITCH

0.6 MI NE OGLE CO LN, Winnebago, IL

Built 1994 Load: 45.0 t ADT: 6,200

US 20 EB

Over: GROVE CREEK

.3MI E STEPHENSON CO, Winnebago, IL

Built 1995 Load: 45.4 t ADT: 13,000

ILL 251 SB

Over: MCDONALD CREEK

2.0 MI N ILL 173, Winnebago, IL

Built 2002 Load: 45.4 t ADT: 24,200

ILL 251 NB

Over: MCDONALD CREEK

2.0 MI N ILL 173, Winnebago, IL

Built 2002 Load: 45.4 t ADT: 24,200

US 20 WB

Over: GROVE CREEK

0.3 MI E STEPH. CO., Winnebago, IL

Built 1994 Load: 45.7 t ADT: 13,000

ROCKTON RD

Over: ROCK RIVER OVERFLOW

.3 MI W OF ROCKTON, Winnebago, IL

Built 1989 Load: 45.7 t ADT: 2,200

ALPINE RD

Over: UNION PACIFIC RR

0.4 MI S HARRISON AV, Winnebago, IL

Built 1963 Load: 46.0 t ADT: 21,200

IL 2 SB

Over: MUD CREEK

0.4 MI S OLD RVR RD, Winnebago, IL

Built 2012 Load: 46.3 t ADT: 11,800

TRASK BRIDGE RD

Over: UNNAMED CREEK

0.2 MI E COUNTY LINE, Winnebago, IL

Built 1983 Load: 46.3 t ADT: 850

BELT LINE RD

Over: IL RR

0.8 MI W OF ILL 251, Winnebago, IL

Built 2010 Load: 47.6 t ADT: 1,650

IL 2 NB

Over: MUD CREEK

0.4 MI S OLD RIVR RD, Winnebago, IL

Built 2012 Load: 47.6 t ADT: 11,800

COMLY ROAD

Over: COOLIDGE CREEK

0.1 MI W KEITH ROAD, Winnebago, IL

Built 1970 Load: 47.6 t ADT: 200

HONONEGAH RD

Over: DRY CREEK

1.3 MI. W. OF IL 251, Winnebago, IL

Built 1991 Load: 47.6 t ADT: 11,400

I-39 & US 20 N B

Over: CN RR

4.7 MI E OF IL 251, Winnebago, IL

Built 1963 Load: 48.3 t ADT: 25,450

I-39 & US 20 SB

Over: CN RR

4.7 MI E OF IL 251, Winnebago, IL

Built 1963 Load: 48.3 t ADT: 25,450

US 20 E B

Over: W CHANNEL ROCK RIV

.5 MI E OF IL 2, Winnebago, IL

Built 2014 Load: 48.3 t ADT: 32,000

9TH STREET

Over: KEITH CREEK

0.5 M N OF BROADWAY, Winnebago, IL

Built 1984 Load: 48.6 t ADT: 2,100

6TH ST

Over: KEITH CREEK

0.5 MI S OF E STATE, Winnebago, IL

Built 1984 Load: 49.9 t ADT: 3,900

PECATONICA RD

Over: PINK CREEK

.40MI S TRASK BRIDGE, Winnebago, IL

Built 2000 Load: 50.9 t ADT: 1,500

US 20

Over: FULLERS CREEK

.5 MI W OF ILL 2, Winnebago, IL

Built 1964 Load: 51.2 t ADT: 20,400

FAI 90 NB

Over: DRY CREEK

1.0 MI SOUTH RT 75, Winnebago, IL

Built 2012 Load: 52.2 t ADT: 25,500

US 20 E B

Over: E CHANNEL ROCK RIV

.7 MI E OF ILL 2, Winnebago, IL

Built 2014 Load: 53.5 t ADT: 32,000

KISHWAUKEE RD

Over: CANAL CREEK

0.8 MI NE CONDON RD, Winnebago, IL

Built 1979 Load: 54.1 t ADT: 4,550

PERRYVILLE RD

Over: SPRING CREEK

0.4 MI N SPRING BRK, Winnebago, IL

Built 1994 Load: 54.1 t ADT: 21,200

CROCKETT ROAD

Over: UNNAMED CREEK

0.5 MI N BURR OAK RD, Winnebago, IL

Built 1968 Load: 54.8 t ADT: 950

FAI 90 S B

Over: DRY CREEK

1.0 MI SOUTH RT 75, Winnebago, IL

Built 2012 Load: 59.3 t ADT: 25,500

HARRISON ROAD

Over: STREAM

.9 MI N OF ILL 75, Winnebago, IL

Built 1973 Load: 59.6 t ADT: 350

SPRINGFIELD AVE

Over: S BR KENT CREEK

700 FT.S CUNNINGHAM, Winnebago, IL

Built 2002 Load: 61.6 t ADT: 7,700

US 20 W B

Over: CN RR

1.2 MI E MERIDIAN RD, Winnebago, IL

Built 1964 Load: 61.9 t ADT: 14,600

US 20 E B

Over: CN RR

1.2 MI E MERIDIAN RD, Winnebago, IL

Built 1964 Load: 62.2 t ADT: 14,600

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

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Compiled by PlainBridges, Independent data publisher

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.