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:

I74WB REST AREA RA

Over: TRIB SPOON RIVER

SPOON RIVER RESTAREA, Knox, IL

Built 1976 Load: 89.1 t ADT: 500

COUNTY HIGHWAY 07

Over: MIDDLE CREEK

NE-4-T11NR2E, Knox, IL

Built 1956 Load: 89.1 t ADT: 325

TR 325

Over: HERMON CREEK

NE-17-T9NR2E, Knox, IL

Built 1975 Load: 89.1 t ADT: 25

FAS 398 - CH 20

Over: TRIB TO HAW CREEK

NW-1-T9NR2E, Knox, IL

Built 1973 Load: 89.1 t ADT: 100

STATE ST

Over: COURT CREEK

STATE&ATSFRR, Knox, IL

Built 1992 Load: 89.1 t ADT: 1,300

TR 192

Over: WALNUT CR

SW-7-T13NR3E, Knox, IL

Built 1900 Load: 17.5 t ADT: 25

TR 84

Over: POPE CREEK

SW-6-T13NR2E, Knox, IL

Built 1970 Load: 20.4 t ADT: 100

FAS 393-CH 4

Over: WALNUT CREEK

CTR-17-T13NR3E, Knox, IL

Built 1934 Load: 24.3 t ADT: 300

TR 194

Over: LITTLERS CREEK

NE-30-T9NR3E, Knox, IL

Built 1900 Load: 25.3 t ADT: 50

TR 84

Over: STREAM

NW-6-T12NR2E, Knox, IL

Built 1985 Load: 26.9 t ADT: 75

HENDERSON ST

Over: CEDAR CR DR DIT

1 BLK S MAIN ST, Knox, IL

Built 1900 Load: 32.4 t ADT: 4,450

TR 260

Over: HICKORY CR

SW-7-T9NR4E, Knox, IL

Built 1977 Load: 32.4 t ADT: 75

TR 32

Over: HENDERSON CREEK

SE-32-T13NR1E, Knox, IL

Built 1979 Load: 32.4 t ADT: 75

TR 195B

Over: MIDDLE CREEK

SE-13-T11NR2E, Knox, IL

Built 1980 Load: 32.4 t ADT: 50

TR 289

Over: TRIB TO FRENCH CREEK

SE-28-T10NR4E, Knox, IL

Built 1980 Load: 32.4 t ADT: 25

TR 79

Over: FOREMAN CREEK

W.CTR-3-T12NR3E, Knox, IL

Built 1978 Load: 32.4 t ADT: 10

TR 79

Over: TRIB TO FOREMAN CR

E1/2-3-T12NR3E, Knox, IL

Built 1980 Load: 32.4 t ADT: 10

TR 261

Over: HAW CREEK

CTR-13-T10NR2E, Knox, IL

Built 1978 Load: 32.4 t ADT: 50

TR 56

Over: POPE CREEK

SW-2-T13NR1E, Knox, IL

Built 1980 Load: 32.4 t ADT: 50

TR 2 CO LINE ROAD

Over: TRIB TO INDIAN CREEK

SW-7-T9NR1E, Knox, IL

Built 1980 Load: 32.4 t ADT: 50

TR 279

Over: PIG CREEK

S.CTR-28-T10NR2E, Knox, IL

Built 1982 Load: 32.4 t ADT: 50

TR 98

Over: HAW CREEK

NW-31-T11NR2E, Knox, IL

Built 1982 Load: 32.4 t ADT: 175

TR 260

Over: FRENCH CREEK

SE-36-T10NR3E, Knox, IL

Built 1982 Load: 32.4 t ADT: 25

TR 259

Over: BRUSH CREEK

SW-24-T10NR1E, Knox, IL

Built 1983 Load: 32.4 t ADT: 50

TR 254

Over: MUD RUN CREEK

NE-14-T13NR3E, Knox, IL

Built 1983 Load: 32.4 t ADT: 25

TR 172

Over: LITTLERS CREEK

S1/2-25-T9NR2E, Knox, IL

Built 1988 Load: 32.4 t ADT: 50

TR 6

Over: STREAM

NW-18-T11N,R1E, Knox, IL

Built 1983 Load: 32.4 t ADT: 75

TR 187

Over: SUGAR CR

NE-14-T11N,R3E, Knox, IL

Built 1983 Load: 32.4 t ADT: 25

TR 112

Over: MIDDLE CREEK

NE-5-T11NR2E, Knox, IL

Built 1984 Load: 32.4 t ADT: 75

TR 130

Over: HAW CREEK

S.CTR-15-T10NR2E, Knox, IL

Built 1985 Load: 32.4 t ADT: 75

TR 154

Over: STREAM

W.CTR.-23-T11NR2E, Knox, IL

Built 1983 Load: 32.4 t ADT: 250

TR 56A

Over: HENDERSON CREEK

SW-34-T13NR1E, Knox, IL

Built 1985 Load: 32.4 t ADT: 25

TR 15

Over: MUD RUN CREEK

NE-12-T13NR3E, Knox, IL

Built 1984 Load: 32.4 t ADT: 25

CO HWY 2

Over: POPE CREEK TRIB.

NE-20-T13NR2E, Knox, IL

Built 1985 Load: 32.4 t ADT: 150

TR 114

Over: TRIB TO POPE CREEK

NW-9-T13NR2E, Knox, IL

Built 1986 Load: 32.4 t ADT: 25

TR 320

Over: WALNUT CREEK

E1/2-2-T12NR4E, Knox, IL

Built 1986 Load: 32.4 t ADT: 25

TR 76

Over: POPE CREEK

SW-1-T13NR1E RIO TWP, Knox, IL

Built 1986 Load: 32.4 t ADT: 50

TR 250

Over: HICKORY CREEK

SW-11-T9NR3E, Knox, IL

Built 1986 Load: 32.4 t ADT: 25

TR 359

Over: TRIB TO SPOON RIVER

NE-33-T9NR2E, Knox, IL

Built 1987 Load: 32.4 t ADT: 10

CH 19

Over: FRENCH CREEK

W.CTR-32-T10NR4E, Knox, IL

Built 1988 Load: 32.4 t ADT: 100

TR 318

Over: FRENCH CREEK

SE-35-T11NR4E, Knox, IL

Built 1993 Load: 32.4 t ADT: 125

TR 305

Over: TRIB TO FRENCH CREEK

NW-5-T9NR4E, Knox, IL

Built 1988 Load: 32.4 t ADT: 100

TR 175

Over: MIDDLE CREEK

E1/2-11-T11NR2E, Knox, IL

Built 1995 Load: 32.4 t ADT: 225

TR 8

Over: INDIAN CREEK

CTR-18-T9NR1E, Knox, IL

Built 1990 Load: 32.4 t ADT: 25

TR 56A

Over: TRIB. S HENDERSON CR

NE-15-T12NR1E, Knox, IL

Built 1989 Load: 32.4 t ADT: 75

TR 152

Over: HAW CREEK

W1/2-14-T10NR2E, Knox, IL

Built 1990 Load: 32.4 t ADT: 50

FAS 394 - CH 12

Over: FOREMAN CREEK

SE-4-T12NR3E, Knox, IL

Built 1993 Load: 32.4 t ADT: 250

TR 240

Over: COURT CREEK

NE-22-T11NR3E, Knox, IL

Built 1989 Load: 32.4 t ADT: 10

TR 94

Over: STREAM

SW-29-T9NR2E, Knox, IL

Built 1990 Load: 32.4 t ADT: 10

TR 192A

Over: FOREMAN CREEK

S1/2-6-T12NR3E, Knox, IL

Built 1994 Load: 32.4 t ADT: 250

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