Knox County, IL

321 public highway bridges

Knox County Bridge Snapshot

Knox County, Illinois contains 321 public highway bridges in the FHWA National Bridge Inventory. Roughly 45.8% are rated “Good,” 29.6% “Fair,” 5.9% “Poor,” and 5.9% 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.

321

Total Bridges

45.8%

Good

5.9%

Poor

5.9%

Structurally Deficient

Condition Distribution

Good

45.8% (147)

Fair

29.6% (95)

Poor

5.9% (19)

SD

5.9% (19)

All Bridges (321)

Sort:

FAS 394 - CH 12

Over: TRIB. COURT CREEK

SE-16-T11NR3E, Knox, IL

Built 1993 Load: 32.4 t ADT: 900

CH 19

Over: TRIB. FRENCH CREEK

SW-32-T10NR4E, Knox, IL

Built 1992 Load: 32.4 t ADT: 100

FAS 1395-CH 6

Over: POPE CREEK

SW-5-T13NR2E, Knox, IL

Built 1992 Load: 32.4 t ADT: 125

TR 324

Over: SWAB RUN CREEK

SW-36-T10NR4E, Knox, IL

Built 1992 Load: 32.4 t ADT: 125

TR 83

Over: HENDERSON CREEK

NE-7-T12NR1E, Knox, IL

Built 1994 Load: 32.4 t ADT: 75

CH 16

Over: TRIB TO WALNUT CREEK

E.CTR-29-T13NR4E, Knox, IL

Built 1994 Load: 32.4 t ADT: 100

TR 267

Over: FRENCH CREEK

SE-22-T10NR4E, Knox, IL

Built 1993 Load: 32.4 t ADT: 50

FAS 401 - CH 25

Over: TRIB TO BRUSH CREEK

E.CTR-3-T10NR1E, Knox, IL

Built 1994 Load: 32.4 t ADT: 950

CH 39

Over: TRIB TO SPOON RIVER

NE-21-T9NR2E, Knox, IL

Built 2006 Load: 32.4 t ADT: 125

COUNTY HIGHWAY 05

Over: BRUSH CREEK

NE-36-T10NR1E, Knox, IL

Built 1997 Load: 32.4 t ADT: 425

TR 166

Over: COURT CREEK

SW-24-T11NR2E, Knox, IL

Built 1995 Load: 32.4 t ADT: 75

TR 192

Over: STREAM

S1/2-19-T13NR3E, Knox, IL

Built 1995 Load: 32.4 t ADT: 75

COUNTY HIGHWAY 12

Over: TRIB TO SUGAR CREEK

S.CTR-9-T11NR3E, Knox, IL

Built 1998 Load: 32.4 t ADT: 850

COUNTY HIGHWAY 19

Over: TRIB TO FRENCH CREEK

SW-32-T10NR4E, Knox, IL

Built 1997 Load: 32.4 t ADT: 100

CH 19

Over: TRIB TO FRENCH CREEK

NW-5-T9NR4E, Knox, IL

Built 1997 Load: 32.4 t ADT: 100

TR 6CO LINE RD

Over: SOUTHHENDERSON CREEK

NW-19-T12NR1E, Knox, IL

Built 1995 Load: 32.4 t ADT: 75

TR 338

Over: FRENCH CREEK

SE-1-T10NR4E, Knox, IL

Built 1996 Load: 32.4 t ADT: 25

TR 44

Over: INDIAN CREEK

SE-9-T9NR1E, Knox, IL

Built 1997 Load: 32.4 t ADT: 25

TR 136

Over: MIDDLE CREEK

R2E-4THPM-SEC 3, Knox, IL

Built 1996 Load: 32.4 t ADT: 75

TR 134

Over: STREAM

SW-3-T13NR2E, Knox, IL

Built 1998 Load: 32.4 t ADT: 25

FAS 237 (CH 3)

Over: TRIB. TO WALNUT CRK

SW1/4 SEC 24 T13NR2E, Knox, IL

Built 1997 Load: 32.4 t ADT: 375

TR 236

Over: FLEA CREEK

SW-23-T9NR3E, Knox, IL

Built 1998 Load: 32.4 t ADT: 50

OAK RUN ROAD

Over: TRIB TO SPOON LAKE

NE-4-T11NR3E, Knox, IL

Built 1998 Load: 32.4 t ADT: 425

TR 206

Over: NORTH CREEK

SW-17-T11NR3E, Knox, IL

Built 1999 Load: 32.4 t ADT: 75

TR 289

Over: TRIB TO FRENCH CREEK

S.CTR-29-T10NR4E, Knox, IL

Built 2000 Load: 32.4 t ADT: 25

TR 324B

Over: KICKAPOO CREEK

SW-13-T9NR4E, Knox, IL

Built 1999 Load: 32.4 t ADT: 650

TR 236

Over: LITTLERS CREEK

NW-35-T9NR3E, Knox, IL

Built 2001 Load: 32.4 t ADT: 50

TR 15

Over: WALNUT CREEK

CTR-9-T13NR3E, Knox, IL

Built 1999 Load: 32.4 t ADT: 75

TR 301

Over: BRUSH CREEK

NE-6-T9NR2E, Knox, IL

Built 2000 Load: 32.4 t ADT: 25

TR 84

Over: TRIB HENDERSON CR

SW-30-T13NR2E, Knox, IL

Built 2000 Load: 32.4 t ADT: 50

TR 114

Over: TRIB TO POPE CREEK

W CTR-9-T13NR2E, Knox, IL

Built 2000 Load: 32.4 t ADT: 25

TR 324 B

Over: KICKAPOO CREEK

SW-24-T9NR4E, Knox, IL

Built 2002 Load: 32.4 t ADT: 650

TR 76A

Over: S HENDERSON CREEK

E CTR-23-T12NR1E, Knox, IL

Built 2002 Load: 32.4 t ADT: 50

COUNTY HIGHWAY 29

Over: TRIB TO LITTLERS CRK

E.CTR-31-T9NR3E, Knox, IL

Built 2004 Load: 32.4 t ADT: 100

TR 172

Over: TRIB TO SPOON RIVER

S1/2-36-T9NR2E, Knox, IL

Built 2003 Load: 32.4 t ADT: 25

TR 231

Over: HAW CREEK

S.CTR-32-T11NR2E, Knox, IL

Built 2003 Load: 32.4 t ADT: 275

CO HWY 1

Over: HENDERSON CREEK

SW-23.T12NR1E, Knox, IL

Built 2005 Load: 32.4 t ADT: 800

TR 217

Over: HAW CREEK

SW-25-T11NR1E, Knox, IL

Built 2003 Load: 32.4 t ADT: 50

TR 154

Over: COURT CREEK

NW-23-T11NR2E, Knox, IL

Built 2004 Load: 32.4 t ADT: 175

TR 136

Over: COURT CREEK

NE-22-T11NR2E, Knox, IL

Built 2004 Load: 32.4 t ADT: 150

CO.LINE RD.STARK T

Over: FITCH CREEK

NE-13-T13NR4E, Knox, IL

Built 2004 Load: 32.4 t ADT: 150

TR 245

Over: TRIB TO HAW CREEK

NW-12-T10NR2E, Knox, IL

Built 2006 Load: 32.4 t ADT: 25

TR 176/Barefoot Rd

Over: COURT CREEK

W1/2-19-T11NR3E, Knox, IL

Built 2013 Load: 32.4 t ADT: 150

TR 320

Over: TRIB TO WALNUT CREEK

N1/2-11-T12NR4E, Knox, IL

Built 2007 Load: 32.4 t ADT: 25

CH 16

Over: FITCH CREEK

CNTR SEC 26 T13N,R4E, Knox, IL

Built 2009 Load: 32.4 t ADT: 150

CH 7

Over: SUGAR CREEK

3 Mi. S. of Ill. 167, Knox, IL

Built 2016 Load: 32.4 t ADT: 100

TR 320

Over: FITCH CREEK

NW-36-T13NR4E, Knox, IL

Built 2006 Load: 32.4 t ADT: 25

TR 171

Over: SNAKEDEN HOLLOWCREEK

NW-8-T11NR4E, Knox, IL

Built 2008 Load: 32.4 t ADT: 50

TR 251

Over: SWAB RUN CREEK

NE-24-T10NR4E, Knox, IL

Built 2010 Load: 32.4 t ADT: 75

TR 183

Over: NORTH CREEK

SW-7-T11NR3E, Knox, IL

Built 2011 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 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