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 493

Fair

Over: CREEK

TH RD E 2950, LaSalle, IL

Built 1984 Load: 32.4 t ADT: 75

TR 48

Fair

Over: BAILEY CR

E 3RD RD N 1857, LaSalle, IL

Built 1984 Load: 32.4 t ADT: 150

TR 330 E 1950TH RD

Fair

Over: INDIAN CREEK

E 1950TH RD N 4000, LaSalle, IL

Built 1986 Load: 32.4 t ADT: 50

FAS 369 N4TH RD

Fair

Over: LONG POINT CREEK

N 4TH RD E 1050, LaSalle, IL

Built 1986 Load: 32.4 t ADT: 125

TR 104

Fair

Over: STREAM

E 6TH N 1850, LaSalle, IL

Built 1985 Load: 32.4 t ADT: 25

TR 354

Fair

Over: TRIB OF COVEL CREEK

E 21ST N 1825, LaSalle, IL

Built 1985 Load: 32.4 t ADT: 25

TR 453 N 21ST RD

Fair

Over: CEDAR CREEK

N 21ST RD E 0060, LaSalle, IL

Built 1986 Load: 32.4 t ADT: 50

TR 310

Fair

Over: COVEL CREEK

E18TH,N2475TH, LaSalle, IL

Built 1988 Load: 32.4 t ADT: 100

TR 2 E 12TH RD

Fair

Over: LONG POINT CR

E 12TH RD N 450, LaSalle, IL

Built 1986 Load: 32.4 t ADT: 25

TR 332B

Fair

Over: BRANCH COVEL CREEK

E 20TH N2260, LaSalle, IL

Built 1987 Load: 32.4 t ADT: 25

TR 354 A

Fair

Over: OTTER CREEK

E 21ST RD N 1560, LaSalle, IL

Built 1987 Load: 32.4 t ADT: 25

MS 7112/PREV TR375

Fair

Over: S. KICKAPOOCREEK

N 2553 RD E 2550, LaSalle, IL

Built 1987 Load: 32.4 t ADT: 775

TR 109

Fair

Over: INDIAN CREEK

N.4101ST, E.1705TH, LaSalle, IL

Built 1989 Load: 32.4 t ADT: 25

TR567

Fair

Over: LONG POINT CREEK

N 3RD RD,E 920, LaSalle, IL

Built 1988 Load: 32.4 t ADT: 25

TR 503

Fair

Over: OTTER CREEK

N 16TH RD,E 2110, LaSalle, IL

Built 1988 Load: 32.4 t ADT: 1,700

TR 441

Fair

Over: BR COVEL CREEK

N22ND, E196TH, LaSalle, IL

Built 1989 Load: 32.4 t ADT: 75

CH 22

Fair

Over: INDIAN CREEK

N.42ND, E2195, LaSalle, IL

Built 1991 Load: 32.4 t ADT: 750

TR 166 B

Fair

Over: DRAINAGE DITCH

E 10TH RD, N 590, LaSalle, IL

Built 1991 Load: 32.4 t ADT: 25

TR467

Fair

Over: STREAM

N. 20th E. 1038, LaSalle, IL

Built 1990 Load: 32.4 t ADT: 75

CH 10

Fair

Over: SUTPHENS RUN

E.7TH, N.4510, LaSalle, IL

Built 1991 Load: 32.4 t ADT: 275

TR 244

Fair

Over: STREAM

E.14TH N2915, LaSalle, IL

Built 1994 Load: 32.4 t ADT: 275

TR99

Fair

Over: SOMONAUK CREEK

N4250th E2610, LaSalle, IL

Built 1995 Load: 32.4 t ADT: 75

TR 454C

Fair

Over: HOG RUN CREEK

.22 M S OF FAS 272, LaSalle, IL

Built 1996 Load: 32.4 t ADT: 50

TR 211B

Fair

Over: BR OF BUCK CREEK

N35TH, E1675, LaSalle, IL

Built 1997 Load: 32.4 t ADT: 275

TR 238

Fair

Over: CROOKED LEG CRK

N. 4135 E 14TH RD, LaSalle, IL

Built 1997 Load: 32.4 t ADT: 200

TR 173

Fair

Over: UNNAMED STREAM

N3853, E2680, LaSalle, IL

Built 1997 Load: 32.4 t ADT: 125

TR 205A

Fair

Over: CROOKED LEG CREEK

N 36TH, E 1915, LaSalle, IL

Built 1998 Load: 32.4 t ADT: 100

TR 320

Fair

Over: CROOKED LEG CREEK

E 18TH AT N3605, LaSalle, IL

Built 2000 Load: 32.4 t ADT: 175

TR 277

Fair

Over: UNNAMED STREAM

JUST E OF E1888TH RD, LaSalle, IL

Built 2001 Load: 32.4 t ADT: 200

TR 257

Fair

Over: PECUMSAUGEN CREEK

N3150, E785, LaSalle, IL

Built 2000 Load: 32.4 t ADT: 125

FAS 272

Fair

Over: HOG RUN

N21, E 2915, LaSalle, IL

Built 2001 Load: 32.4 t ADT: 950

TR 156

Fair

Over: PECUMSAUGEN CREEK

E9TH, N3215, LaSalle, IL

Built 2001 Load: 32.4 t ADT: 100

TR 205

Fair

Over: CROOKED LEG CREEK

N36 RD, E1760, LaSalle, IL

Built 2002 Load: 32.4 t ADT: 150

E 25TH RD

Fair

Over: UNNAMED CREEK

E 25 N3750, LaSalle, IL

Built 2003 Load: 32.4 t ADT: 100

FAS 273 (CH 5)

Fair

Over: WAUPECAN CREEK

N 17TH, E 2965, LaSalle, IL

Built 2002 Load: 32.4 t ADT: 525

TR 240

Fair

Over: EGG BAG CREEK

E 14TH N 1410, LaSalle, IL

Built 2008 Load: 32.4 t ADT: 100

FAS259 CH3

Fair

Over: STREAM

E 2653,N 3725, LaSalle, IL

Built 1973 Load: 32.4 t ADT: 1,350

MS 2360 CLARK ST

Fair

Over: LONG CREEK

CLARK ST, LaSalle, IL

Built 1986 Load: 32.4 t ADT: 300

Monroe Street

Fair

Over: Coal Run Creek

R3E, T21N, 3rd. PMMd, LaSalle, IL

Built 1990 Load: 32.4 t ADT: 125

SHABBONA STREET

Fair

Over: PRAIRIE CREEK

SO OF 1ST STREET, LaSalle, IL

Built 1983 Load: 32.4 t ADT: 775

I-39 NB/US 51 NB

Fair

Over: C & NW RR

0.2 MI N OF US 52, LaSalle, IL

Built 1977 Load: 32.7 t ADT: 9,350

TR 71

Fair

Over: STREAM

N 4350TH E 10TH, LaSalle, IL

Built 1964 Load: 32.7 t ADT: 50

FAS 269 (CH 12 N46

Fair

Over: STREAM

N46TH RD E 650, LaSalle, IL

Built 1978 Load: 32.7 t ADT: 325

TR 310

Fair

Over: BR COVEL CREEK

E 18TH N2190, LaSalle, IL

Built 1979 Load: 32.7 t ADT: 100

FAS268 A/CH 15

Fair

Over: MILL RACE

CH 15 N MILL RACE, LaSalle, IL

Built 1912 Load: 32.7 t ADT: 3,450

TR 35 N 4592TH

Fair

Over: LITTLE INDIAN CR

N 4592 RD E 2190, LaSalle, IL

Built 1980 Load: 33.0 t ADT: 50

ILL 71

Fair

Over: BRUMBACH CREEK

6.78 MI N OF US 6, LaSalle, IL

Built 1941 Load: 33.4 t ADT: 5,250

ILL 23SBL LASALLE

Fair

Over: PARKING LOT ENTRANCE

DOWN TOWN OTTAWA, LaSalle, IL

Built 1982 Load: 33.4 t ADT: 10,100

E 19TH

Fair

Over: BR COVEL CREEK

E.19TH N.2360, LaSalle, IL

Built 1950 Load: 33.4 t ADT: 25

TR 166 B

Fair

Over: DIAMOND CR

E10TH RD N075, LaSalle, IL

Built 1979 Load: 33.4 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