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 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 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.