DeKalb County, IL

264 public highway bridges

DeKalb County Bridge Snapshot

DeKalb County, Illinois contains 264 public highway bridges in the FHWA National Bridge Inventory. Roughly 38.3% are rated “Good,” 42.4% “Fair,” 12.5% “Poor,” and 12.5% 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.

264

Total Bridges

38.3%

Good

12.5%

Poor

12.5%

Structurally Deficient

Condition Distribution

Good

38.3% (101)

Fair

42.4% (112)

Poor

12.5% (33)

SD

12.5% (33)

All Bridges (264)

Sort:

UNION PACIFIC RR

Over: ANNIE GLIDDEN RD

0.1 MI. S. OF IL 38, DeKalb, IL

Built 1971 ADT: 12,200

CNW RR

Over: SHABBONA GROVE RD

2 MI SE SHABBONA, DeKalb, IL

Built 1900 ADT: 375

IC RR

Over: ILL 72 FAP 553

IN GENOA, DeKalb, IL

Built 1932 ADT: 6,000

TR 22 TOWER RD

Over: I-88

1 MI E OGLE CO LINE, DeKalb, IL

Built 1974 ADT: 24,000

TR 42 WILLRETT RD

Over: I-88

2 MI E OGLE CO LINE, DeKalb, IL

Built 1974 ADT: 24,000

FAS 174 LANG RD

Over: I-88

3 MI E OGLE CO LINE, DeKalb, IL

Built 1974 ADT: 24,000

FAS 1112 UNIVERSIT

Over: I-88

5 MI E OGLE CO LINE, DeKalb, IL

Built 1974 ADT: 24,000

I-88 RAMP (GLIDDEN

Over: I-88

W EDGE OF DEKALB, DeKalb, IL

Built 1974 ADT: 24,000

S FIRST ST-DEKALB

Over: I-88

S EDGE DEKALB, DeKalb, IL

Built 1974 ADT: 24,000

I-88 WB

Over: ILL 23

S EDGE DEKALB, DeKalb, IL

Built 1974 ADT: 3,950

I-88 EB

Over: ILL 23

S EDGE DEKALB, DeKalb, IL

Built 1974 ADT: 3,950

FAP 324 - PEACE RD

Over: I-88

SE EDGE OF DEKALB, DeKalb, IL

Built 1974 ADT: 31,100

SOMONAUK RD FAS 96

Over: I-88

1 MI S CORTLAND, DeKalb, IL

Built 1974 ADT: 31,100

HINCKLEY RD TR 206

Over: I-88

2 MI W KANE CO, DeKalb, IL

Built 1974 ADT: 31,100

KESLINGER RD

Over: I-88

1 MI W KANE CO, DeKalb, IL

Built 1974 ADT: 31,100

I-88 RMP1072 (OASI

Over: I-88 E-W TOLLWAY

.5 MI. E OF ILL 23, DeKalb, IL

Built 1974 ADT: 24,000

UNION PACIFIC RR

Over: PEARL ST

0.1 MI S IL38/DEKALB, DeKalb, IL

Built 1966 ADT: 1,800

Pedestrian Walkway

Over: I-88

0.7 Mi E Shabbona Rd, DeKalb, IL

Built 2006 ADT: 24,000

TR-171 (OWENS RD)

Over: E BR BIG ROCK CREEK

1400N 1800E, DeKalb, IL

Built 1957 Load: 12.0 t ADT: 50

BARCHARD ROAD

Over: BRANCH OF OWENS CR

2990N 300E, DeKalb, IL

Built 1950 Load: 13.9 t ADT: 25

ANDERLAND RD

Over: BR OF KISHWAUKEE RV

1765N 600E, DeKalb, IL

Built 1963 Load: 15.9 t ADT: 100

KIRKLAND RD

Over: PR SO BR KISHWAUKEE

3290N 490E, DeKalb, IL

Built 1938 Load: 16.2 t ADT: 575

NEW LEBANON RD

Over: COON CREEK

3460N 1785E, DeKalb, IL

Built 1969 Load: 17.5 t ADT: 25

IRENE RD

Over: TRIMBLE RUN

3575N 240E, DeKalb, IL

Built 1948 Load: 17.8 t ADT: 525

PLEASANT HILL ROAD

Over: BR S BR KISHWAUKEE R

2750N 1045E, DeKalb, IL

Built 1954 Load: 18.1 t ADT: 850

MILLER RD

Over: BR LITTLE ROCK CREEK

1200N 1395E, DeKalb, IL

Built 1960 Load: 19.4 t ADT: 25

LEE ROAD

Over: BR LITTLE ROCK CREEK

1100N 1300E, DeKalb, IL

Built 1960 Load: 19.4 t ADT: 225

GLIDDEN RD

Over: SO BR KISHWAUKEE RV

3250N 850E, DeKalb, IL

Built 1947 Load: 20.1 t ADT: 3,050

TOWER ROAD

Over: RICKELSON CREEK

1320N 100E, DeKalb, IL

Built 1955 Load: 20.1 t ADT: 100

E PAW PAW RD

Over: BR PAW PAW RUN

205N 030E, DeKalb, IL

Built 1955 Load: 21.4 t ADT: 100

FAIRVIEW DRIVE

Over: KILBUCK CREEK

1900N 080E, DeKalb, IL

Built 1955 Load: 21.7 t ADT: 50

UNIVERSITY RD

Over: SO BR KISHWAUKEE RV

1455N 500E, DeKalb, IL

Built 1954 Load: 21.7 t ADT: 950

UNIVERSITY RD

Over: S BR KISHWAUKEE RV

1270N 500E, DeKalb, IL

Built 1954 Load: 21.7 t ADT: 950

W. COUNTY LINE RD

Over: RICKELSON CREEK

1330N 00E, DeKalb, IL

Built 1956 Load: 23.0 t ADT: 475

IL 64 FAP 17

Over: DRAINAGE DITCH

2.5 MI W SYCAMORE, DeKalb, IL

Built 1937 Load: 23.3 t ADT: 4,500

LELAND RD

Over: LITTLE INDIAN CREEK

745N 730E, DeKalb, IL

Built 1969 Load: 23.3 t ADT: 425

LASHER ROAD

Over: E BR BIG ROCK CREEK

1160N 1795E, DeKalb, IL

Built 1957 Load: 23.7 t ADT: 50

IL 23

Over: SOMONAUK CREEK

1.4 MI N JCT US 30, DeKalb, IL

Built 1975 Load: 24.0 t ADT: 3,150

HAUMESSER RD

Over: KISHWAUKEE RV

1645N 400E, DeKalb, IL

Built 1968 Load: 24.3 t ADT: 10

SHABBONA GROVE RD

Over: BIG INDIAN CREEK

700N 495E, DeKalb, IL

Built 1956 Load: 24.3 t ADT: 375

LASHER ROAD

Over: BATTLE CREEK

1150N 1675E, DeKalb, IL

Built 1972 Load: 24.3 t ADT: 50

HINCKLEY RD

Over: W BR BIG ROCK CREEK

1015N 1600E, DeKalb, IL

Built 1963 Load: 24.3 t ADT: 1,100

ROLLO RD

Over: BR INDIAN CREEK

350N 250E, DeKalb, IL

Built 1949 Load: 24.6 t ADT: 575

KIRKLAND ROAD

Over: S BR KISHWAUKEE RV

3210N 490E, DeKalb, IL

Built 1980 Load: 25.3 t ADT: 575

HOWISON RD

Over: BR LITTLE ROCK CREEK

1120N 1200E, DeKalb, IL

Built 1954 Load: 25.9 t ADT: 275

HOUGHTBY RD

Over: BIG INDIAN CREEK

800N 295E, DeKalb, IL

Built 1952 Load: 26.2 t ADT: 75

PERRY RD

Over: AFTON LATERAL

1500N 660E, DeKalb, IL

Built 1950 Load: 26.6 t ADT: 1,800

MCGIRR RD

Over: SO BR KISHWAUKEE RV

1300N 540E, DeKalb, IL

Built 1954 Load: 26.9 t ADT: 100

SLEEPY HOLLOW RD

Over: INDIAN CREEK

520N 470E, DeKalb, IL

Built 1957 Load: 26.9 t ADT: 50

IRENE RD

Over: TRIMBLE RUN

3500N 240E, DeKalb, IL

Built 1955 Load: 27.2 t ADT: 525

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 5, 2026