Knox County, IL

321 public highway bridges

Knox County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Knox County, Illinois contains 321 public highway bridges. Roughly 45.8% are rated “Good,” 29.6% “Fair,” and 5.9% “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.

321
Total Bridges
45.8%
Good
29.6%
Fair
5.9%
Poor Condition

Condition Distribution

Good
45.8% (147)
Fair
29.6% (95)
Poor
5.9% (19)

All Bridges (321)

TR 263

Fair

Over: TRIB TO SPOON RIVER

NE-24-T10NR3E, Knox, IL

Built 1983 Load: 32.4 t ADT: 50

TR 329

Fair

Over: HAW CREEK

NE-13-T9NR2E, Knox, IL

Built 1985 Load: 32.4 t ADT: 25

TR 278

Fair

Over: STREAM

NW-5-T13NR4E, Knox, IL

Built 1984 Load: 32.4 t ADT: 100

CH 28

Fair

Over: SPOON RIV

NW-15-T11NR4E, Knox, IL

Built 1987 Load: 32.4 t ADT: 75

CH 15

Fair

Over: WALNUT CREEK

NW-31-T13NR4E, Knox, IL

Built 1988 Load: 32.4 t ADT: 275

FAS 398 - CH 20

Fair

Over: HAW CREEK

E.CTR-2-T9NR2E, Knox, IL

Built 1988 Load: 32.4 t ADT: 100

FAS 394-CH 12

Fair

Over: WALNUT CREEK

NE-21-T13NR3E, Knox, IL

Built 1990 Load: 32.4 t ADT: 200

FAS 1394-CH 7

Fair

Over: NORTH CREEK

SE-36-T12NR2E, Knox, IL

Built 1990 Load: 32.4 t ADT: 250

FAS 403-CH 35

Fair

Over: TRIB TO HENDERSON CR

NW-35-T13NR1E, Knox, IL

Built 1994 Load: 32.4 t ADT: 200

TR 130

Fair

Over: PIG CREEK

SW-34-T10NR2E, Knox, IL

Built 1988 Load: 32.4 t ADT: 50

CH 15

Fair

Over: COURT CREEK

SW-24-T11NR3E, Knox, IL

Built 1992 Load: 32.4 t ADT: 575

TR 619A

Fair

Over: COURT CREEK

NW-24-T11NR3E, Knox, IL

Built 1992 Load: 32.4 t ADT: 10

TR 161

Fair

Over: NORTH CREEK

SW-6-T11NR3E, Knox, IL

Built 1991 Load: 32.4 t ADT: 100

TR 253

Fair

Over: FRENCH CREEK

NE-14-T10NR4E, Knox, IL

Built 1992 Load: 32.4 t ADT: 125

FAS 396-CH 18

Fair

Over: FRENCH CREEK

NW-27-T10NR4E, Knox, IL

Built 1990 Load: 32.4 t ADT: 275

CO. LINE RD.

Fair

Over: CEDAR CREEK

NW-19-T11NR1E, Knox, IL

Built 1995 Load: 32.4 t ADT: 75

E. THIRD ST

Fair

Over: BN RR (062986X)

E. OF BROAD ST, Knox, IL

Built 1998 Load: 32.4 t ADT: 2,650

N. SOANGETAHA RD

Fair

Over: AT&SF RR (004647L)

SE-12-T11NR1E, Knox, IL

Built 2013 Load: 32.4 t ADT: 600

FAS-393(CH-4)

Fair

Over: Trib to Walnut Creek

W.CTR-17-T13N,R4E, Knox, IL

Built 1983 Load: 33.0 t ADT: 600

ILL 17

Fair

Over: FITCH CREEK

2 MI W OF LAFAYETTE, Knox, IL

Built 1989 Load: 36.3 t ADT: 425

FAP 574 (IL 41)

Fair

Over: BNSF RR

S OF GALESBURG, Knox, IL

Built 2004 Load: 36.6 t ADT: 4,800

ILL 41

Fair

Over: CEDAR CREEK TRIB

0.4 MI S JCT IL 116, Knox, IL

Built 2002 Load: 36.9 t ADT: 2,050

TR 7

Fair

Over: POPE CREEK

NE-6-T13NR1E, Knox, IL

Built 1983 Load: 38.2 t ADT: 125

TR 215

Fair

Over: SPOON RIVER

CTR-24-T11NR3E, Knox, IL

Built 1986 Load: 38.6 t ADT: 250

ILL 180

Fair

Over: SPOON RIVER

1 MI N WILLIAMSFIELD, Knox, IL

Built 1990 Load: 38.9 t ADT: 625

EB US 34

Fair

Over: CEDAR CREEK

SW EDGE OF GALESBURG, Knox, IL

Built 1979 Load: 39.5 t ADT: 8,950

ILL 180

Fair

Over: WALNUT CREEK

2.5M S OF ILL 17, Knox, IL

Built 1993 Load: 40.2 t ADT: 625

TR 206

Fair

Over: FOREMAN CREEK

S.CTR-5-T12NR3E, Knox, IL

Built 1900 Load: 40.2 t ADT: 10

FAI 74 WB

Fair

Over: Pope Creek

1 mi s Henry Co line, Knox, IL

Built 2018 Load: 40.5 t ADT: 8,150

EB I-74

Fair

Over: BNSF RR (004648T)

N.GALESBURG INTERCH, Knox, IL

Built 1963 Load: 43.1 t ADT: 8,850

WB I-74

Fair

Over: BNSF RR (004648T)

N GALESBURG INTERCH, Knox, IL

Built 1963 Load: 44.1 t ADT: 8,850

TR 260

Fair

Over: LITTLERS CREEK

W CTR-31-T9NR4E, Knox, IL

Built 1966 Load: 44.4 t ADT: 75

IL 180

Fair

Over: CADWELL CR

2 MI N WILLIAMSFIELD, Knox, IL

Built 2000 Load: 48.0 t ADT: 400

US 150

Fair

Over: HENDERSON CREEK

6.3 MI N OF US 34, Knox, IL

Built 2012 Load: 48.0 t ADT: 2,950

FAS 1195 IL 180

Fair

Over: BR BRANDYWINE CR

4.5 MI N OF US 150, Knox, IL

Built 2009 Load: 48.0 t ADT: 400

IL 97

Fair

Over: LITTLERS CREEK

2 MI N OF RAPATEE, Knox, IL

Built 2002 Load: 48.6 t ADT: 1,350

US 150

Fair

Over: SPOON RIVER TRIB.

3.8 MI W JCT 180/150, Knox, IL

Built 2003 Load: 48.9 t ADT: 1,100

ILL 41

Fair

Over: CEDAR CREEK

0.75 MI E OF US 34, Knox, IL

Built 1986 Load: 49.6 t ADT: 4,300

ILL 8

Fair

Over: STREAM

4.5 MI E OF ILL 97, Knox, IL

Built 1971 Load: 51.5 t ADT: 900

WB US 34

Fair

Over: CEDAR CREEK

SW EDGE OF GALESBURG, Knox, IL

Built 1979 Load: 52.2 t ADT: 8,950

IL 180

Fair

Over: CADWELL CR

1.5 MI N WILLIAMSFLD, Knox, IL

Built 2000 Load: 52.2 t ADT: 400

FAI 74EB

Fair

Over: HENDERSON CREEK

5.4 MI S HENRY CO LI, Knox, IL

Built 2015 Load: 54.8 t ADT: 8,150

TR 320

Fair

Over: TRIB TO FITCH CR

SW-24-T13NR4E, Knox, IL

Built 1986 Load: 54.8 t ADT: 10

FAI 74WB

Fair

Over: HENDERSON CREEK

5.4 MI S HENRY CO LI, Knox, IL

Built 2015 Load: 55.1 t ADT: 8,150

COUNTY HIGHWAY 37

Fair

Over: TRIB.S.HENDERSON.CRK

SE-16-T12NR1E, Knox, IL

Built 1960 Load: 57.3 t ADT: 500

FAI 74 EB

Fair

Over: Pope Creek

0.9mi S Henry Co Ln, Knox, IL

Built 2018 Load: 63.5 t ADT: 8,150

US 150 (MAIN ST)

Fair

Over: CEDAR CREEK, BNSF RR

500 BLK W. MAIN, Knox, IL

Built 2012 Load: 64.2 t ADT: 10,300

BROAD STREET

Fair

Over: CEDAR CREEK CHANNEL

N.OF WATER ST., Knox, IL

Built 1930 Load: 67.1 t ADT: 1,550

I-74

Fair

Over: STREAM

.1M N KNOX CO LINE, Knox, IL

Built 1967 Load: 88.8 t ADT: 15,000

US 34

Fair

Over: CEDAR CREEK

0.7M E OF COUNTY LN, Knox, IL

Built 1986 Load: 88.8 t ADT: 8,950

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.