Lee County, IL

372 public highway bridges

Lee County Bridge Snapshot

Lee County, Illinois contains 372 public highway bridges in the FHWA National Bridge Inventory. Roughly 36.8% are rated “Good,” 40.3% “Fair,” 11.8% “Poor,” and 11.8% 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.

372

Total Bridges

36.8%

Good

11.8%

Poor

11.8%

Structurally Deficient

Condition Distribution

Good

36.8% (137)

Fair

40.3% (150)

Poor

11.8% (44)

SD

11.8% (44)

All Bridges (372)

Sort:

IL 26

Over: UP RR

S EDGE OF DIXON, Lee, IL

Built 1989 Load: 36.3 t ADT: 14,200

I 39&US 51

Over: STEWARD CREEK BRANCH

0.06 MI S PERRY RD, Lee, IL

Built 1984 Load: 36.6 t ADT: 19,500

TR-289 (ST MARYS R

Over: TRIB OF BUREAU CREEK

0.25 M W CENTER ROAD, Lee, IL

Built 1982 Load: 36.6 t ADT: 25

HARMON ROAD

Over: DRAINAGE DITCH

0.5 M N OF HARMON, Lee, IL

Built 1965 Load: 36.6 t ADT: 450

OGEE ROAD

Over: UNNAMED STREAM

0.5 M N S PAW PAW RD, Lee, IL

Built 1982 Load: 37.9 t ADT: 100

FAP 561-IL 2 EB

Over: DRAINAGE DITCH

E SAUK VAL. COLLEGE, Lee, IL

Built 1991 Load: 38.9 t ADT: 11,500

PUMP FACTORY RD

Over: MAIN DITCH

2.2 MI SO.STERLINGRD, Lee, IL

Built 1979 Load: 39.2 t ADT: 100

IL 251

Over: WILLOW CREEK

0.8 MI. N. OF US 30, Lee, IL

Built 2000 Load: 39.9 t ADT: 1,100

FAP 561-IL 2 EB

Over: LITTLE CREEK

W SAUK VAL. COLLEGE, Lee, IL

Built 1991 Load: 40.5 t ADT: 11,000

US ROUTE 52

Over: BRNCH GREEN RIVER

3.0 MI SE AMBOY, Lee, IL

Built 2002 Load: 41.1 t ADT: 2,300

CH 36 MOUND HILL R

Over: SUGAR CREEK

0.6 MI N PRAIRIEVLLE, Lee, IL

Built 1957 Load: 41.1 t ADT: 650

IL 2 WB

Over: DRAINAGE DITCH

E SAUK VAL. COLLEGE, Lee, IL

Built 2010 Load: 41.5 t ADT: 11,500

IL 2

Over: ROCK RIVER

AT GRAND DETOUR, Lee, IL

Built 1994 Load: 43.1 t ADT: 4,850

IL 2

Over: DITCH

3 MI. W. OF DIXON, Lee, IL

Built 2003 Load: 43.1 t ADT: 11,500

I 39&US 51

Over: STREAM

2 MI N OF US 30, Lee, IL

Built 1984 Load: 43.7 t ADT: 19,100

PERRY ROAD-FAS 176

Over: STEWARD CREEK BRANCH

0.2 MI E OF STEWARD, Lee, IL

Built 1983 Load: 44.1 t ADT: 1,600

I 39 & US 51 SB

Over: BNSF RR

0.1 MI S PERRY ROAD, Lee, IL

Built 1984 Load: 44.4 t ADT: 9,550

I-88 WB

Over: BEACH CREEK

1 MI SW OGLE CO LN, Lee, IL

Built 1974 Load: 44.4 t ADT: 8,050

IL 251

Over: BUREAU CREEK

.9 MI N LASALLE CO, Lee, IL

Built 1994 Load: 45.0 t ADT: 1,400

IL 2 WB

Over: LITTLE CREEK

W SAUK VAL. COLLEGE, Lee, IL

Built 2010 Load: 45.7 t ADT: 11,000

CH 35 NELSON RD

Over: 3 MILE BRANCH

1.0 MI S OF NELSON, Lee, IL

Built 1961 Load: 45.7 t ADT: 575

I 39 & US 51 NB

Over: BNSF RR

0.1 MI S PERRY ROAD, Lee, IL

Built 1984 Load: 46.0 t ADT: 9,550

US 30

Over: HOWLAND CREEK

E. WHITESIDE CO. LN., Lee, IL

Built 1993 Load: 46.0 t ADT: 2,950

US 52 & IL 2 & IL

Over: ROCK RIVER

DIXON, Lee, IL

Built 2002 Load: 47.6 t ADT: 22,100

I 39&US 51

Over: WILLOW CREEK

0.6 MI N. CHICAGO RD, Lee, IL

Built 1983 Load: 47.6 t ADT: 18,700

I-88 EB

Over: STEWARD CR

AT OGLE CO LN, Lee, IL

Built 1974 Load: 47.6 t ADT: 8,050

ILL ROUTE 26

Over: GREEN RIVER

2.5 MI S AMBOY RD, Lee, IL

Built 2012 Load: 51.2 t ADT: 1,500

I-88 WB

Over: CNW RR

.6 MI W OF NELSON RD, Lee, IL

Built 1974 Load: 53.5 t ADT: 7,850

I-88 WB

Over: 3 MILE BRANCH

2.3 MI W JCT ILL 26, Lee, IL

Built 1974 Load: 53.5 t ADT: 7,850

ILL 38

Over: FRANKLIN CREEK

.6 MI W FRANKLIN GR, Lee, IL

Built 1955 Load: 54.8 t ADT: 2,600

ILL 251

Over: ADRIANS CREEK

1.9 MI S JCT US 30, Lee, IL

Built 1987 Load: 55.7 t ADT: 800

US ROUTE 30

Over: WILLOW CREEK

1.0 MI W OF I-39, Lee, IL

Built 1932 Load: 57.7 t ADT: 1,450

PAW PAW RD

Over: STEWARD CREEK

0.5 MI S PERRY RD, Lee, IL

Built 1964 Load: 59.3 t ADT: 100

US 30

Over: 5 MILE BRANCH CREEK

2.5 MI. W. OF IL 26, Lee, IL

Built 1993 Load: 60.3 t ADT: 1,850

I-88

Over: RICKELSON CREEK

0.3 MI SW OGLE CO LN, Lee, IL

Built 1972 Load: 82.6 t ADT: 16,100

US ROUTE 52

Over: BUREAU CREEK

2 MI SE SUBLETTE, Lee, IL

Built 2002 Load: 89.1 t ADT: 2,500

I-88

Over: BEACH CREEK

1.5 MI SW OF OGLE CO, Lee, IL

Built 1972 Load: 94.9 t ADT: 16,100

I 39&US 51

Over: DRY RUN CREEK

0.75 MI N OF US 30, Lee, IL

Built 1982 Load: 97.2 t ADT: 19,100

I 39&US 51

Over: HARMON CREEK SOUTH

3 MI N OF US 30, Lee, IL

Built 1982 Load: 97.2 t ADT: 19,100

I-88

Over: BEACH CREEK

1.4 MI SW OF OGLE CO, Lee, IL

Built 1972 Load: 97.2 t ADT: 16,100

I-88 (E-W TOLLWAY)

Over: BEACH CREEK

5 MI SW OGLE CO LN, Lee, IL

Built 1972 Load: 97.2 t ADT: 16,100

CARTER RD

Over: BR OF GREEN RIVER

0.7 MI N MAYTOWN RD, Lee, IL

Built 1974 Load: 17.5 t ADT: 50

GERMAN ROAD

Over: BR OF GREEN RIVER

0.6 M S HERMAN ROAD, Lee, IL

Built 1964 Load: 21.4 t ADT: 50

CH 5 INLET RD

Over: GREEN RIVER

5.0 MI NE AMBOY, Lee, IL

Built 1961 Load: 22.0 t ADT: 400

GITTLESON RD

Over: STEWARD CREEK

1.0 MI S OF OGLE CO, Lee, IL

Built 1972 Load: 22.7 t ADT: 25

HAYES RD

Over: TRIB STEWARD CR

0.6 MI E STEWARD RD, Lee, IL

Built 1966 Load: 22.7 t ADT: 10

WOODLAWN ROAD

Over: BR OF STEWARD CREEK

0.3 M S REYNOLDS RD, Lee, IL

Built 1968 Load: 22.7 t ADT: 125

GRAND DETOUR RD

Over: MOORE CREEK

1.0 MI SE OF ILL 2, Lee, IL

Built 1969 Load: 24.3 t ADT: 200

THORPE RD

Over: DRAINAGE DITCH

3.0 MI S REYNOLDS RD, Lee, IL

Built 1901 Load: 24.3 t ADT: 25

COUNTY LINE RD

Over: BIG INDIAN CREEK

3.5 MI S OF US.30, Lee, IL

Built 1968 Load: 25.9 t ADT: 325

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

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026