LaSalle County, IL

529 public highway bridges

LaSalle County Bridge Snapshot

LaSalle County, Illinois contains 529 public highway bridges in the FHWA National Bridge Inventory. Roughly 37.1% are rated “Good,” 39.7% “Fair,” 11.5% “Poor,” and 11.5% 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.

529
Total Bridges
37.1%
Good
11.5%
Poor
11.5%
Structurally Deficient

Condition Distribution

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

All Bridges (529)

TR-38

Good

Over: BRANCH OF CEDAR CR

E 275TH N 2350, LaSalle, IL

Built 2005 Load: 32.4 t ADT: 125

TR 525

Good

Over: BR LITTLE SANDY CR

N 14TH E 010, LaSalle, IL

Built 2005 Load: 32.4 t ADT: 25

CO RD 16

Good

Over: CEDAR CREEK

E 175 N 2340, LaSalle, IL

Built 2008 Load: 32.4 t ADT: 150

CO RD 6

Good

Over: TRIB VERMILION R

N2150 E950, LaSalle, IL

Built 2009 Load: 32.4 t ADT: 525

CH 29 FAU 6141

Good

Over: EGG BAG CREEK

1380 E 15TH, LaSalle, IL

Built 2010 Load: 32.4 t ADT: 1,100

FAS 1356 (CH33)

Good

Over: TOMAHAWK CREEK

N 33RD E 515, LaSalle, IL

Built 2011 Load: 32.4 t ADT: 625

FAS 271(CH25)

Good

Over: BR NETTLE CREEK

E 29TH, N 3125, LaSalle, IL

Built 2011 Load: 32.4 t ADT: 1,150

TR156, E9TH

Good

Over: CLARK RUN CREEK

E 9TH, N 2965, LaSalle, IL

Built 2009 Load: 32.4 t ADT: 100

TR-19

Good

Over: Indian Creek

N 47TH E 1080, LaSalle, IL

Built 2018 Load: 32.4 t ADT: 25

FAS 260 CH 13

Good

Over: TOMAHAWK CREEK

E 5TH, N 3225, LaSalle, IL

Built 2013 Load: 32.4 t ADT: 625

TR 559

Good

Over: Sandy Creek

N 7th E 790, LaSalle, IL

Built 2015 Load: 32.4 t ADT: 400

TR 4 Meridian RD

Good

Over: Spring Creek

E 0th,N. 3850, LaSalle, IL

Built 2014 Load: 32.4 t ADT: 100

FAS 174/CH 9

Good

Over: Buck Creek

E 12th, N 3650, LaSalle, IL

Built 2013 Load: 32.4 t ADT: 325

TR 332

Good

Over: Covel Creek

E 20th N 2210, LaSalle, IL

Built 2014 Load: 32.4 t ADT: 25

CH 15, FAS 268

Good

Over: Covel Creek

E 22nd, N 2015, LaSalle, IL

Built 2014 Load: 32.4 t ADT: 950

CH 15

Good

Over: Wolf Creek

E 22nd N 1830, LaSalle, IL

Built 2014 Load: 32.4 t ADT: 950

CH 66

Good

Over: Covel Creek Tributar

N.25th / E.1960, LaSalle, IL

Built 2014 Load: 32.4 t ADT: 325

CH 6 N21ST

Good

Over: COVEL CREEK

3 Mi. E. of Gr Ridge, LaSalle, IL

Built 2015 Load: 32.4 t ADT: 1,100

CH 6 N21ST RD

Good

Over: COVEL CREEK

N 21ST E 1920, LaSalle, IL

Built 2015 Load: 32.4 t ADT: 1,100

CH 51

Good

Over: Walbridge Creek

1.5 Mi W of CH 15, LaSalle, IL

Built 2013 Load: 32.4 t ADT: 1,300

TR-187

Good

Over: Spring Creek

N. 37th E. 120, LaSalle, IL

Built 2016 Load: 32.4 t ADT: 200

TR 322

Good

Over: COVEL CREEK

E 19TH N 2095, LaSalle, IL

Built 2016 Load: 32.4 t ADT: 50

TR 152A

Good

Over: CREEK

E 9TH,N 6TH, LaSalle, IL

Built 1988 Load: 32.4 t ADT: 50

FAS268 A/CH 15

Good

Over: MILL RACE

CH 15/S MILL RACE, LaSalle, IL

Built 1937 Load: 32.4 t ADT: 3,450

FAS1277/COMMERCIAL

Good

Over: LONG CREEK

COMMERCIAL ST,W/MAIN, LaSalle, IL

Built 1997 Load: 32.4 t ADT: 1,550

10TH AVE & 4TH ST

Good

Over: MENDOTA CREEK

10TH AVE & 4TH ST, LaSalle, IL

Built 2001 Load: 32.4 t ADT: 50

3RD ST

Good

Over: MENDOTA CR

S EDGE MENDOTA, LaSalle, IL

Built 2006 Load: 32.4 t ADT: 375

LINCOLN EAST/MS222

Good

Over: CLARK RUN (WEST)

EAST OF IL 178, LaSalle, IL

Built 2011 Load: 32.4 t ADT: 425

POST ST

Good

Over: GOOSE CREEK

150 FT E OF IL 23, LaSalle, IL

Built 1994 Load: 32.4 t ADT: 700

WASSON STREET

Good

Over: PRAIRIE CREEK

W OF BRONSON STR, LaSalle, IL

Built 1985 Load: 32.4 t ADT: 775

Otter Creek

Good

Over: N trib. of Coal Run

2,300' S. of RT.18, LaSalle, IL

Built 2012 Load: 32.4 t ADT: 1,500

VERMILION ST.

Good

Over: COAL RUN CREEK

S,SPRING-N BROMBACH, LaSalle, IL

Built 1995 Load: 32.4 t ADT: 500

DIVISION ST

Good

Over: PRAIRIE CREEK

1/2 BLK E OF WALNUT, LaSalle, IL

Built 2012 Load: 32.4 t ADT: 425

BAZORE ST (FAU 614

Good

Over: PRAIRIE CREEK

1/2 BLK E OF WALNUT, LaSalle, IL

Built 2013 Load: 32.4 t ADT: 3,300

Remington Rd

Good

Over: Otter Creek

1/8 Mi N Marilla Rd, LaSalle, IL

Built 2014 Load: 32.4 t ADT: 300

OAK ST IN TONICA

Good

Over: BAILEY CREEK

OAK ST OV BAILEY CR, LaSalle, IL

Built 1990 Load: 32.4 t ADT: 50

STARVED RCK LODGE

Good

Over: FOX CANYON

N 2675-E880, LaSalle, IL

Built 1994 Load: 32.4 t ADT: 500

TR 310

Good

Over: OTTER CREEK

E 18TH N 1500, LaSalle, IL

Built 1921 Load: 32.7 t ADT: 400

TR 107

Good

Over: VERMILION CREEK

N 42ND E 815, LaSalle, IL

Built 1974 Load: 34.0 t ADT: 100

TR 523A

Good

Over: OTTER CREEK

N 15TH E 2190, LaSalle, IL

Built 1933 Load: 34.3 t ADT: 250

CH. 23

Good

Over: Vermillion River

E 651, N 2525, LaSalle, IL

Built 2017 Load: 35.0 t ADT: 900

TR 19

Good

Over: INDIAN CREEK

N 47TH E 1360, LaSalle, IL

Built 1930 Load: 35.3 t ADT: 100

TR 332 A

Good

Over: OTTER CREEK

E 20TH N 1510, LaSalle, IL

Built 1930 Load: 35.3 t ADT: 50

TR 503

Good

Over: OTTER CREEK

N 16TH E 2430, LaSalle, IL

Built 1935 Load: 35.3 t ADT: 1,700

ILL 23/IL 71 FAP 6

Good

Over: ILL MICH CANAL

LASALLE ST IN OTTAWA, LaSalle, IL

Built 1999 Load: 35.6 t ADT: 10,400

ILL 23 & 71

Good

Over: ILL MICH CANAL

COLUMBUS ST OTTAWA, LaSalle, IL

Built 1999 Load: 35.6 t ADT: 10,800

IL 179

Good

Over: LONG POINT CREEK

2.8 M E OF US 51, LaSalle, IL

Built 1995 Load: 36.3 t ADT: 300

CH 45

Good

Over: DIAMOND CREEK

E 11TH RD N 120, LaSalle, IL

Built 1986 Load: 36.3 t ADT: 225

CO RD 5

Good

Over: WOLF CREEK

N 17TH,E 1925, LaSalle, IL

Built 2020 Load: 36.3 t ADT: 1,150

ILL 251

Good

Over: BAILEY CREEK

3.63 MI S OF ILL 71, LaSalle, IL

Built 1999 Load: 37.3 t ADT: 1,700

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