LaSalle County, IL

529 public highway bridges

LaSalle County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, LaSalle County, Illinois contains 529 public highway bridges. Roughly 37.1% are rated “Good,” 39.7% “Fair,” and 11.5% “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.

529
Total Bridges
37.1%
Good
39.7%
Fair
11.5%
Poor Condition

Condition Distribution

Good
37.1% (196)
Fair
39.7% (210)
Poor
11.5% (61)

All Bridges (529)

TR 561

Good

Over: BR.PRAIRIE CR.

N 6TH E 1060, LaSalle, IL

Built 1936 Load: 37.3 t ADT: 25

TR 108

Good

Over: TOMAHAWK CREEK

E 6TH RD N 3510, LaSalle, IL

Built 1987 Load: 37.6 t ADT: 175

ILL 179

Good

Over: MOON CREEK

0.16 MI S OF ILL 17, LaSalle, IL

Built 1984 Load: 37.9 t ADT: 300

FAS 174N/CH 41

Good

Over: BRANCH INDIAN CREEK

E1351, N4742, LaSalle, IL

Built 2002 Load: 37.9 t ADT: 200

ILL 251

Good

Over: BAILEY CREEK

4.0 MI S OF ILL 71, LaSalle, IL

Built 1999 Load: 38.2 t ADT: 1,700

TR 48A

Good

Over: DRAINAGE DITCH

E. 3RD RD N. 1450, LaSalle, IL

Built 1992 Load: 38.2 t ADT: 50

IL 17 FAP 649

Good

Over: SANDY CREEK

2MI E OF WENNONA, LaSalle, IL

Built 1995 Load: 38.6 t ADT: 900

US 52

Good

Over: TOMAHAWK CREEK

6.98 MI E OF ILL 251, LaSalle, IL

Built 1997 Load: 38.6 t ADT: 1,400

IL 71

Good

Over: INTERMIT STREAM

5.90 MI E OF IL 178, LaSalle, IL

Built 2007 Load: 38.9 t ADT: 1,700

TR 314

Good

Over: BUCK CREEK

E 18, N 3450, LaSalle, IL

Built 1998 Load: 38.9 t ADT: 675

TR 101

Good

Over: ROODS CREEK

N4201, E.2710, LaSalle, IL

Built 1992 Load: 39.2 t ADT: 300

SHERIDAN ROAD

Good

Over: MISSION CREEK

0.7 MI N OF US 52, LaSalle, IL

Built 1930 Load: 39.5 t ADT: 1,700

FAS 1274

Good

Over: SOMONAUK CREEK

N 48TH,E 2725, LaSalle, IL

Built 1966 Load: 39.5 t ADT: 3,100

1ST STREET

Good

Over: MENDOTA CREEK

100FT W OF ORCHARD, LaSalle, IL

Built 1997 Load: 39.9 t ADT: 225

IL 170

Good

Over: BNSF Railroad

4.7 M N of IL 17, LaSalle, IL

Built 2019 Load: 40.2 t ADT: 1,400

FAS 270 CH 19

Good

Over: First Creek

N 4250 E 315, LaSalle, IL

Built 2014 Load: 40.2 t ADT: 1,100

IL 71

Good

Over: VERMILION RIVER

3.2 MI W OF IL 178, LaSalle, IL

Built 2006 Load: 40.5 t ADT: 2,200

FAU6121 & I-39 SB

Good

Over: CONVEYOR BELT

.25 MI N OF US 6, LaSalle, IL

Built 1985 Load: 40.5 t ADT: 1,825

TR 469

Good

Over: COVEL CREEK

N 20TH E 2285, LaSalle, IL

Built 2019 Load: 40.5 t ADT: 50

CH 44

Good

Over: PRAIRIE CREEK

2.88 MI S OF ILL 17, LaSalle, IL

Built 1984 Load: 41.1 t ADT: 325

I-80 EB

Good

Over: LITTLE VERMILLION RV

2.1 MI E JCT IL 251, LaSalle, IL

Built 1996 Load: 41.5 t ADT: 14,200

US 51,I-39

Good

Over: STREAM

4.61 MI N OF ILL 18, LaSalle, IL

Built 1988 Load: 41.5 t ADT: 19,400

TR 452

Good

Over: MISSION CREEK

E. 2750 N. 3975, LaSalle, IL

Built 2018 Load: 41.5 t ADT: 50

IL 178

Good

Over: I & M CANAL

1.47 M S of US 6, LaSalle, IL

Built 2012 Load: 41.8 t ADT: 3,600

US 52

Good

Over: Mission Creek

2.12 M E of IL 71, LaSalle, IL

Built 2017 Load: 41.8 t ADT: 1,600

IL 71 FAP 627

Good

Over: CREEK@HENNEPIN CANYN

3.18 MI. E OF IL 178, LaSalle, IL

Built 2007 Load: 42.1 t ADT: 1,700

ILL 18

Good

Over: DRAINAGE DITCH

3.03 MI E OF ILL 89, LaSalle, IL

Built 1999 Load: 42.1 t ADT: 3,050

TR 382

Good

Over: COVEL CREEK

E. 23rd E. 2285, LaSalle, IL

Built 2019 Load: 42.4 t ADT: 25

TR-107A

Good

Over: SOMONAUK CREEK

N 42ND E 2520, LaSalle, IL

Built 2018 Load: 42.8 t ADT: 850

FAU-6011 (1st Ave.

Good

Over: First Creek

1st ave & 9th St., LaSalle, IL

Built 2018 Load: 42.8 t ADT: 1,100

TR 354A

Good

Over: OTTER CREEK

E 21ST N 1440, LaSalle, IL

Built 1926 Load: 43.1 t ADT: 50

US 6

Good

Over: MILLIKEN CR

1.73 MI E OF ILL 71, LaSalle, IL

Built 2016 Load: 43.4 t ADT: 4,050

TR 169

Good

Over: LITTLE VERMILLION

N 3850TH E 545, LaSalle, IL

Built 1985 Load: 44.1 t ADT: 125

PEORIA & OTTAWA RD

Good

Over: BAILEY CR

0.11 mi W IL251, LaSalle, IL

Built 1940 Load: 44.4 t ADT: 325

CO RD 13

Good

Over: LITTLE VERMILION RV

E 5TH,N 3675, LaSalle, IL

Built 1938 Load: 45.0 t ADT: 425

I-80 WB

Good

Over: LITTLE VERMILLION RV

2.1MI E IL251 JCT, LaSalle, IL

Built 1996 Load: 45.7 t ADT: 14,200

IL 170 FAP 786

Good

Over: Waupecan Creek

8.43 mi S of US 6, LaSalle, IL

Built 2014 Load: 45.7 t ADT: 1,200

US 34 FAP 587

Good

Over: VERMILLION CREEK

0.29 E OF US51/I39, LaSalle, IL

Built 1977 Load: 46.0 t ADT: 1,850

US 34 FAP 587

Good

Over: STREAM

4.8 MI W OF I-39, LaSalle, IL

Built 2009 Load: 46.0 t ADT: 1,900

TR 142B

Good

Over: LONG POINT CR

E 8TH N 250, LaSalle, IL

Built 1932 Load: 46.0 t ADT: 25

ILL 351 FAP 619

Good

Over: I & M CANAL Buzzi RR

0.20 MI S OF US 6, LaSalle, IL

Built 1953 Load: 46.7 t ADT: 5,250

ILL 178

Good

Over: ILLINOIS RIVER

2.2 MI S OF US 6, LaSalle, IL

Built 2020 Load: 47.0 t ADT: 3,200

US 6

Good

Over: TRIB OF I & M CANAL

6.47 MI E OF ILL 71, LaSalle, IL

Built 1980 Load: 47.3 t ADT: 2,450

CH 33 FAS 1365

Good

Over: LITTLE VERMILION

N 33RD,E 415, LaSalle, IL

Built 2010 Load: 48.0 t ADT: 525

US 34 FAP 587

Good

Over: LITTLE VERMILION

2.2 MI E OF IL 251, LaSalle, IL

Built 2018 Load: 48.3 t ADT: 5,250

TR 214

Good

Over: EGG BAG CR

E 12TH N 1430, LaSalle, IL

Built 1956 Load: 48.9 t ADT: 125

US 52

Good

Over: TOMAHAWK CREEK

5.84 MI E ILL 251, LaSalle, IL

Built 1997 Load: 49.2 t ADT: 1,500

FAS2258, CH21

Good

Over: FOX RIVER

E 2153,N 3440, LaSalle, IL

Built 1960 Load: 51.8 t ADT: 800

US 51,I-39

Good

Over: STREAM

4.01 MI N OF ILL 18, LaSalle, IL

Built 1988 Load: 52.2 t ADT: 19,400

US 34 FAP 587

Good

Over: SUTPHENS RUN

8.3 MI E OF I-39, LaSalle, IL

Built 2023 Load: 53.1 t ADT: 1,600

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.