DeKalb County, IL

264 public highway bridges

DeKalb County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, DeKalb County, Illinois contains 264 public highway bridges. Roughly 38.3% are rated “Good,” 42.4% “Fair,” and 12.5% “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.

264
Total Bridges
38.3%
Good
42.4%
Fair
12.5%
Poor Condition

Condition Distribution

Good
38.3% (101)
Fair
42.4% (112)
Poor
12.5% (33)

All Bridges (264)

PLANK ROAD

Fair

Over: COON CREEK

2800N 1750E, DeKalb, IL

Built 1941 Load: 27.5 t ADT: 7,300

S MALTA RD

Fair

Over: E BR KILLBUCK CREEK

2000N 120E, DeKalb, IL

Built 1955 Load: 27.5 t ADT: 450

CHASE ROAD/TR196A

Fair

Over: UNION DITCH NO 1

1890N 1500E, DeKalb, IL

Built 1932 Load: 27.5 t ADT: 25

PRESERVE RD

Fair

Over: SOMONAUK CREEK

900N 1165E, DeKalb, IL

Built 1951 Load: 27.5 t ADT: 50

SHABBONA GROVE RD

Fair

Over: LITTLE INDIAN CREEK

700N 740E, DeKalb, IL

Built 1955 Load: 27.9 t ADT: 275

E SANDWICH RD

Fair

Over: LITTLE ROCK CREEK BR

655N 1750E, DeKalb, IL

Built 1970 Load: 29.2 t ADT: 1,800

BARBER GREENE RD

Fair

Over: E BR KISHWAUKEE RV

2190N 1570E, DeKalb, IL

Built 1960 Load: 29.8 t ADT: 1,750

THOMPSON ROAD

Fair

Over: BR KISHWAUKEE RIVER

2550N 1055E, DeKalb, IL

Built 1995 Load: 30.8 t ADT: 50

WOLF RD

Fair

Over: S BR KISHWAUKEE RIV.

3350N 740E, DeKalb, IL

Built 1953 Load: 31.4 t ADT: 175

SHABBONA GROVE RD

Fair

Over: BR SOMONAUK CREEK

700N 1205E, DeKalb, IL

Built 1961 Load: 31.4 t ADT: 50

GOBLE RD

Fair

Over: BR PAW PAW RUN

230N 100E, DeKalb, IL

Built 1955 Load: 32.1 t ADT: 25

HILLCREST DRIVE

Fair

Over: S. Br of Kishwaukee Rive

0.2mi. E. of N. 1st., DeKalb, IL

Built 1964 Load: 32.1 t ADT: 9,200

CHICAGO RD

Fair

Over: SOMONAUK CREEK

550N 1405E, DeKalb, IL

Built 1946 Load: 32.4 t ADT: 1,550

SUYDAM RD

Fair

Over: SOMONAUK CREEK

145N 1565E, DeKalb, IL

Built 1955 Load: 32.4 t ADT: 1,950

SOMONAUK ROAD

Fair

Over: BR LITTLE ROCK CREEK

625N 1550E, DeKalb, IL

Built 1976 Load: 32.4 t ADT: 3,000

SOMONAUK ROAD

Fair

Over: W. BR. BIG ROCK CRK.

1150N 1510E, DeKalb, IL

Built 1993 Load: 32.4 t ADT: 2,400

GENOA ROAD

Fair

Over: DEER CREEK

3315N 1170E, DeKalb, IL

Built 1998 Load: 32.4 t ADT: 3,000

SHABBONA ROAD

Fair

Over: BIG INDIAN CREEK

820N 350E, DeKalb, IL

Built 2000 Load: 32.4 t ADT: 800

MALTA ROAD

Fair

Over: BR. OF OWENS CREEK

2675N 350E, DeKalb, IL

Built 2001 Load: 32.4 t ADT: 300

CHERRY VALLEY RD

Fair

Over: KINGSBURY CREEK

3560N 430E, DeKalb, IL

Built 2008 Load: 32.4 t ADT: 2,950

PERRY ROAD

Fair

Over: S BR KISHWAUKEE RV

1500N 630E, DeKalb, IL

Built 2009 Load: 32.4 t ADT: 1,800

SHABBONA RD

Fair

Over: BR INDIAN CRK

495N 300E, DeKalb, IL

Built 2009 Load: 32.4 t ADT: 475

SUYDAM RD

Fair

Over: LITTLE INDIAN CREEK

200N 615E, DeKalb, IL

Built 2007 Load: 32.4 t ADT: 425

PERRY RD

Fair

Over: YOUNG'S CREEK

1500N 1745E, DeKalb, IL

Built 2010 Load: 32.4 t ADT: 2,150

BASE LINE RD

Fair

Over: OWEN CREEK

3000N 365E, DeKalb, IL

Built 1966 Load: 32.4 t ADT: 300

COUNTY LINE ROAD

Fair

Over: BR S BR KISHWAUKEE R

3440N 030E, DeKalb, IL

Built 1980 Load: 32.4 t ADT: 150

PLEASANT HILL ROAD

Fair

Over: S BR KISHWAUKEE RV

3275N 1100E, DeKalb, IL

Built 1977 Load: 32.4 t ADT: 1,100

BASE LINE RD

Fair

Over: LEE SLOUGH CREEK

3000N, 885E, DeKalb, IL

Built 1997 Load: 32.4 t ADT: 1,100

COUNTY LINE ROAD

Fair

Over: BR OF COON CREEK

3550N 1900E, DeKalb, IL

Built 1980 Load: 32.4 t ADT: 500

SCHAFER RD

Fair

Over: OWENS CREEK

2750N 425E, DeKalb, IL

Built 1970 Load: 32.4 t ADT: 50

W. CLARE ROAD

Fair

Over: BRANCH OWENS CREEK

2650N 510E, DeKalb, IL

Built 1990 Load: 32.4 t ADT: 25

PEACE RD

Fair

Over: BR KISHWAUKEE RIVER

2545N 1235E, DeKalb, IL

Built 1995 Load: 32.4 t ADT: 15,000

PEACE RD

Fair

Over: BR KISHWAUKEE RIVER

2610N , 1265E, DeKalb, IL

Built 1996 Load: 32.4 t ADT: 12,800

PEACE ROAD

Fair

Over: UNION PACIFIC RR

0.3 M N OF IL RT 38, DeKalb, IL

Built 1985 Load: 32.4 t ADT: 7,600

GURLER RD. (FAS111

Fair

Over: BR S BR KISHWAUKEE R

1800N 850E, DeKalb, IL

Built 1992 Load: 32.4 t ADT: 450

PLEASANT STREET

Fair

Over: UNION DRAINAGE DITCH

2060N 1645E, DeKalb, IL

Built 1975 Load: 32.4 t ADT: 500

BETHANY ROAD

Fair

Over: E BR KISHWAUKEE RV

2280N 1590E, DeKalb, IL

Built 1982 Load: 32.4 t ADT: 425

WATERMAN ROAD

Fair

Over: BR S BR KISHWAUKEE R

1675N 900E, DeKalb, IL

Built 1979 Load: 32.4 t ADT: 25

HAUMESSER RD

Fair

Over: S BR KISHWAUKEE RIVE

1165N 350E, DeKalb, IL

Built 1986 Load: 32.4 t ADT: 25

HOWISON RD

Fair

Over: SOMONAUK CREEK

705N 1200E, DeKalb, IL

Built 1967 Load: 32.4 t ADT: 275

UNIVERSITY ROAD

Fair

Over: LITTLE INDIAN CREEK

800N 700E, DeKalb, IL

Built 1978 Load: 32.4 t ADT: 75

CREGO ROAD

Fair

Over: BR SOMONAUK CREEK

890N 1100E, DeKalb, IL

Built 1980 Load: 32.4 t ADT: 25

DUFFY ROAD

Fair

Over: SOMONAUK CREEK

1000N 1075E, DeKalb, IL

Built 1983 Load: 32.4 t ADT: 25

PRESERVE ROAD

Fair

Over: LITTLE INDIAN CREEK

900N 635E, DeKalb, IL

Built 1984 Load: 32.4 t ADT: 75

BASTIAN ROAD

Fair

Over: SOMONAUK CREEK

800N 1320E, DeKalb, IL

Built 1969 Load: 32.4 t ADT: 100

SHABBONA GROVE ROA

Fair

Over: SOMONAUK CREEK

700N 1270E, DeKalb, IL

Built 1978 Load: 32.4 t ADT: 50

SCOTT ROAD

Fair

Over: BIG ROCK CREEK

1000N 1715E, DeKalb, IL

Built 1980 Load: 32.4 t ADT: 125

W SANDWICH ROAD

Fair

Over: BR. LITTLR ROCK CRK.

615N 1630E, DeKalb, IL

Built 1979 Load: 32.4 t ADT: 50

SHABBONA GROVE ROA

Fair

Over: LITTLE ROCK CREEK

700N 1720E, DeKalb, IL

Built 1981 Load: 32.4 t ADT: 75

WESSON ROAD

Fair

Over: LITTLE INDIAN CREEK

350N 790E, DeKalb, IL

Built 1982 Load: 32.4 t ADT: 75

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.