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)

TR 23

Good

Over: TRIB N HENDERSON CRK

NE-18-T13NR1E, Knox, IL

Built 2010 Load: 32.4 t ADT: 10

TR 119

Good

Over: South Henderson Crk

NE-19-T12N-R1E, Knox, IL

Built 2012 Load: 32.4 t ADT: 50

TR 304

Good

Over: SWAB RUB CREEK

1.3 Mi N. of Ill. 8, Knox, IL

Built 2015 Load: 32.4 t ADT: 25

TR 29

Good

Over: Mud Run Creek

NE-23-T13NR3E, Knox, IL

Built 2012 Load: 32.4 t ADT: 10

TR 278

Good

Over: WALNUT CREEK TRIB

2 Mi W. of Il. 180, Knox, IL

Built 2015 Load: 32.4 t ADT: 25

TR-65

Good

Over: Fitch Creek

3.5 Mi W of IL 78, Knox, IL

Built 2017 Load: 32.4 t ADT: 50

FAS 397 - CH 8

Good

Over: HAW CREEK

NW-4-T10NR2E, Knox, IL

Built 1965 Load: 32.4 t ADT: 1,300

TR 21A

Good

Over: STREAM

NW1/4SEC15R2ET13N, Knox, IL

Built 1996 Load: 32.4 t ADT: 10

TR 272

Good

Over: STREAM

NW-29-T11NR4E, Knox, IL

Built 2001 Load: 32.4 t ADT: 25

CH 18

Good

Over: TRIB TO SPOON RIV

N.CTR-25-T11NR4E, Knox, IL

Built 2007 Load: 32.4 t ADT: 325

TR 253

Good

Over: TRIB TO SPOON RIVER

SW-8-T10NR4E, Knox, IL

Built 2006 Load: 32.4 t ADT: 50

TR 22

Good

Over: NORTH HENDERSON CRK

NW COR-17-T13NR1E, Knox, IL

Built 2006 Load: 32.4 t ADT: 75

Main St / FAS 393

Good

Over: Walnut Creek Trib

E.CTR-16-T13NR3E, Knox, IL

Built 2015 Load: 32.4 t ADT: 700

TR 201

Good

Over: TRIB CEDAR CREEK

W.CTR-20-T11NR1E, Knox, IL

Built 2020 Load: 32.4 t ADT: 275

PARK ROAD

Good

Over: TRIB S HENDERSON CRK

NE-34-T12NR1E, Knox, IL

Built 1998 Load: 32.4 t ADT: 250

CHAMBERS ST

Good

Over: CEDAR CREEK

ON CHAMBER S.-GROVE, Knox, IL

Built 1930 Load: 32.4 t ADT: 1,700

FARNHAM ST

Good

Over: AT&SF (004649A)

2 BLKS N. OF MAIN ST, Knox, IL

Built 1976 Load: 32.4 t ADT: 6,800

ACADEMY ST

Good

Over: CEDAR CREEK

ONE BLOCK N OF MAIN, Knox, IL

Built 1931 Load: 32.4 t ADT: 1,500

Seminary Street

Good

Over: BNSF Railroad

Galesburg, Knox, IL

Built 2015 Load: 32.4 t ADT: 7,150

FAU 6779- CO LINE

Good

Over: CEDAR CREEK TRIB

Galesburg, Knox, IL

Built 2014 Load: 32.4 t ADT: 75

1ST ST

Good

Over: BN RR (072645G)

CTR-33-T10NR1E, Knox, IL

Built 1996 Load: 32.4 t ADT: 375

LATIMER ST

Good

Over: BN RR (072641E)

S1/2-33-T10NR1E, Knox, IL

Built 1997 Load: 32.4 t ADT: 500

EAST MARTIN ST

Good

Over: BN RR (072643T)

N. CTR-4-T9NR1E, Knox, IL

Built 1996 Load: 32.4 t ADT: 1,050

SEMINARY STREET

Good

Over: CEDAR CREEK

SE-10-T11NR1E, Knox, IL

Built 2015 Load: 32.4 t ADT: 7,150

TR 176/Barefoot Rd

Good

Over: BNSF RR

SW-19-T11NR3E, Knox, IL

Built 2013 Load: 32.4 t ADT: 150

TR 268

Good

Over: LITTLERS CREEK

NE-31-T9NR4E, Knox, IL

Built 1997 Load: 35.6 t ADT: 10

COUNTY HIGHWAY 08

Good

Over: BRUSH CREEK

NE-8-T9NR2E, Knox, IL

Built 2021 Load: 36.0 t ADT: 400

FAS 393-CH 4

Good

Over: MUD RUN CREEK

E.CTR-14-T13NR3E, Knox, IL

Built 1998 Load: 36.3 t ADT: 700

FAS 393 - CH 4

Good

Over: WALNUT CREEK

E.CTR-17-T13NR3E, Knox, IL

Built 2019 Load: 36.3 t ADT: 300

FAS 395 - CH 17

Good

Over: TRIB TO SPOON RIVER

SW-18-T10NR4E, Knox, IL

Built 2020 Load: 37.9 t ADT: 75

CO. HWY. 3

Good

Over: TRIB TO WALNUT CREEK

SW-25-T13NR2E, Knox, IL

Built 1978 Load: 39.9 t ADT: 475

CH 11

Good

Over: SPOON RIVER

NE-1-T10NR3E, Knox, IL

Built 2016 Load: 43.4 t ADT: 75

CH 29

Good

Over: TRIB TO LITTLERS CRK

NW-36-T9NR2E, Knox, IL

Built 1921 Load: 44.1 t ADT: 100

WB I-74

Good

Over: FRENCH CREEK

5 MI E SPOON RIVER, Knox, IL

Built 2020 Load: 48.0 t ADT: 7,700

EB I-74

Good

Over: FRENCH CREEK

5 MI E SPOON RIVER, Knox, IL

Built 2020 Load: 48.0 t ADT: 7,700

ILL 8

Good

Over: HICKORY CREEK

2 MI SE OF MAQUON, Knox, IL

Built 2022 Load: 48.3 t ADT: 900

ILL 97

Good

Over: HAW CREEK TRIB.

6.5 MI NW OF MAQUON, Knox, IL

Built 2016 Load: 50.2 t ADT: 2,100

IL 167

Good

Over: Trib to Cadwell Cr

0.55 mi w of IL 180, Knox, IL

Built 2019 Load: 51.2 t ADT: 600

US 150

Good

Over: BNSF RR(063001F)

3 M SE GALESBURG, Knox, IL

Built 2018 Load: 51.5 t ADT: 3,850

ILL 97

Good

Over: LITTLE HAW CR

4 MI NW OF MAQUON, Knox, IL

Built 2016 Load: 54.1 t ADT: 1,800

TR 304

Good

Over: FRENCH CREEK

SW-34-T10NR4E, Knox, IL

Built 2019 Load: 54.4 t ADT: 25

US 150

Good

Over: S. HENDERSON CR TRIB

3 MI N OF US 34, Knox, IL

Built 2003 Load: 56.1 t ADT: 2,950

TR 76

Good

Over: TRIB TO HENDERSON CK

SE-26-T13NR1E, Knox, IL

Built 2021 Load: 56.1 t ADT: 25

PRAIRIE ST

Good

Over: CEDAR CREEK

200 BLK N. PRAIRIE, Knox, IL

Built 1930 Load: 58.0 t ADT: 1,200

ILL 78

Good

Over: KICKAPOO CREEK

1 MI S ILL 78&8 JCT, Knox, IL

Built 2020 Load: 81.0 t ADT: 1,400

FAS 379-IL 167

Good

Over: North Creek

0.09 mi SE of 34&167, Knox, IL

Built 2020 Load: 89.1 t ADT: 1,150

FAS 379-IL 167

Good

Over: North Creek

.15mi S US 34/IL 167, Knox, IL

Built 2020 Load: 89.1 t ADT: 1,450

COUNTY HIGHWAY 08

Good

Over: HERMON CREEK

S.CTR-18-T9NR2E, Knox, IL

Built 1972 Load: 89.1 t ADT: 425

TR 76

Good

Over: TRIB TO POPE CREEK

SE1/4 SEC11 R1E T13N, Knox, IL

Built 1997 Load: 89.1 t ADT: 50

TR 171

Good

Over: TRIB TO SPOON RIVER

NE-12-T11NR3E, Knox, IL

Built 1996 Load: 89.1 t ADT: 25

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