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)

I-80 EB

Unknown

Over: FAU 6081 LASALLE RD

.8 MI E JCT IL 251, LaSalle, IL

Built 1996 ADT: 5,200

ILL 351 ST. VINCEN

Unknown

Over: FAI 80

1.6 MI E JC ILL 251, LaSalle, IL

Built 2005 ADT: 28,400

MARSEILLES RD/FAS2

Unknown

Over: I-80

3.8 MI E OF IL 71, LaSalle, IL

Built 2009 ADT: 27,600

IL 170 FAP 786

Unknown

Over: IL RIVER & RIVER RD

S OF US RT 6, LaSalle, IL

Built 2009 ADT: 1,600

IL 178/FAU 6120

Unknown

Over: I-80

N OF US 6 UTICA, LaSalle, IL

Built 2011 ADT: 29,300

PLANK RD/FAU 6097

Unknown

Over: I-80

1.4 MI W OF IL 251, LaSalle, IL

Built 2011 ADT: 26,000

FAS 174/CH 9

Unknown

Over: I-80 /Test Rd Access

4.0 M E of IL 178, LaSalle, IL

Built 2021 ADT: 29,300

FAP 68 (IL 23)

Unknown

Over: Ped Bridge over I-80

Adjacent to IL 23 ov I-80, LaSalle, IL

Built 2021 ADT: 14,200

BROADWAY ST.

Unknown

Over: BNSF RR & IL STREET

0.3 MI.E.OF ILL 23, LaSalle, IL

Built 2008 ADT: 275

CON-RAIL CORP.

Unknown

Over: TR 274

E1600 N 1440 KANGLEY, LaSalle, IL

Built 1900 ADT: 75

FOOT TRAIL

Unknown

Over: OR#1

STARVED ROCK ST PK, LaSalle, IL

Built 1935 ADT: 825

AT&SF RR

Unknown

Over: MILDRED AVE

0.19 W OF OTTER CR, LaSalle, IL

Built 1900 ADT: 3,300

CH 15

Fair

Over: Prairie Creek

E 22nd, N 1356, LaSalle, IL

Built 1955 Load: 15.9 t ADT: 700

TR 382

Fair

Over: COVEL CR

E 23RD N 2250, LaSalle, IL

Built 1950 Load: 16.2 t ADT: 50

FAS 268 B/CH 15

Fair

Over: OTTER CREEK

E 22ND,N 1460, LaSalle, IL

Built 1955 Load: 16.2 t ADT: 600

TR 19

Fair

Over: INDIAN CREEK

N 47TH E 1245, LaSalle, IL

Built 1949 Load: 17.5 t ADT: 75

CH-39

Fair

Over: HOG RUN CREEK

N2079 E,27TH, LaSalle, IL

Built 1940 Load: 17.5 t ADT: 300

TR 205

Fair

Over: CROOKED LEG CR

N 36TH E 1790, LaSalle, IL

Built 1965 Load: 19.1 t ADT: 150

TR 324 A

Fair

Over: BUCK CREEK

E 19TH N 3460, LaSalle, IL

Built 1964 Load: 19.4 t ADT: 475

FAS268 A/CH 15

Fair

Over: ILL & MICH CANAL

CHI5 OVER I&M CANAL, LaSalle, IL

Built 1939 Load: 19.4 t ADT: 5,800

MORRIS RD (MS 2330

Fair

Over: GUM CR

Morris Rd over Gum C, LaSalle, IL

Built 1908 Load: 19.4 t ADT: 50

FAS268 B/CH15

Fair

Over: COVEL CREEK

E 22ND,N 2215, LaSalle, IL

Built 1955 Load: 21.1 t ADT: 950

I-39 SB/US 51 SB

Fair

Over: TOMAHAWK CREEK

3.5 MI N OF I-80, LaSalle, IL

Built 1979 Load: 21.7 t ADT: 9,300

TR-224

Fair

Over: EGG-BAG-CREEK

E 13TH N 1405, LaSalle, IL

Built 1968 Load: 22.0 t ADT: 10

CH 29 /E.15TH RD

Fair

Over: VERMILION RIVER

E 15TH,N 1610, LaSalle, IL

Built 1968 Load: 22.4 t ADT: 625

FAS 174N/CH 41

Fair

Over: INDIAN CREEK

E 1351,N 4600, LaSalle, IL

Built 1952 Load: 22.7 t ADT: 200

TR 7

Fair

Over: LITTLE INDIAN CREEK

N 48TH E 1801, LaSalle, IL

Built 1965 Load: 23.0 t ADT: 200

TR 211

Fair

Over: SPRING CREEK

N 35TH E 115, LaSalle, IL

Built 1972 Load: 23.7 t ADT: 150

TR-3

Fair

Over: INDIAN CREEK

N 48TH E 1210, LaSalle, IL

Built 1936 Load: 24.3 t ADT: 25

TR 332-A

Fair

Over: PRAIRIE CREEK

E 20TH N 1390, LaSalle, IL

Built 1938 Load: 24.3 t ADT: 25

TR 402

Fair

Over: WOLF CREEK

E 24TH N 1460, LaSalle, IL

Built 1946 Load: 24.3 t ADT: 50

TR 463

Fair

Over: TRIB VERMILION R

N 2053 RD E 1175, LaSalle, IL

Built 1924 Load: 24.3 t ADT: 75

TR-456

Fair

Over: NETTLE CREEK

E28TH N3135, LaSalle, IL

Built 1973 Load: 24.3 t ADT: 75

CO RD 5

Fair

Over: BR WOLF CREEK

1875 N 17TH, LaSalle, IL

Built 1940 Load: 24.3 t ADT: 1,150

TR 523

Fair

Over: OTTER CREEK

N 15TH E 2090, LaSalle, IL

Built 1952 Load: 24.3 t ADT: 400

FAS268 B/CH15

Fair

Over: OTTER CREEK

E 22ND,N 1505, LaSalle, IL

Built 1955 Load: 24.6 t ADT: 575

I-39 SB/US 51SB

Fair

Over: B & N RR

0.75 MI N OF US 34, LaSalle, IL

Built 1977 Load: 24.9 t ADT: 8,200

I-39 NB/US 51 NB

Fair

Over: B & N RR

0.76 MI N OF US 34, LaSalle, IL

Built 1977 Load: 24.9 t ADT: 8,200

ILL 71/FAP 311

Fair

Over: STREAM

2.88 MI NE OF FAI 80, LaSalle, IL

Built 1942 Load: 25.3 t ADT: 5,600

FAS 174/CH 9

Fair

Over: SUTPHENS RUN

E 12TH,N 4400, LaSalle, IL

Built 1955 Load: 25.3 t ADT: 450

CO RD 42

Fair

Over: BUCK CREEK

E 15TH,N 3570, LaSalle, IL

Built 1932 Load: 25.6 t ADT: 375

CO RD 32

Fair

Over: FOX RIVER

N 41ST,E 2475, LaSalle, IL

Built 1972 Load: 25.9 t ADT: 1,100

TR 87

Fair

Over: L VERMILLIAN CR

N 43RD E 810, LaSalle, IL

Built 1966 Load: 25.9 t ADT: 100

TR-145

Fair

Over: LITTLE INDIAN CREEK

N40E2060, LaSalle, IL

Built 1969 Load: 25.9 t ADT: 75

TR-157

Fair

Over: DRAINAGE DITCH

N 39TH E 190, LaSalle, IL

Built 1972 Load: 25.9 t ADT: 100

TR 525

Fair

Over: DRAINAGE DITCH

N 14TH E 215, LaSalle, IL

Built 1964 Load: 26.6 t ADT: 75

TR-437

Fair

Over: COVEL CREEK

N 2250 E 1540, LaSalle, IL

Built 1972 Load: 26.6 t ADT: 100

TR 175

Fair

Over: SPRING CREEK

N 38TH E 195, LaSalle, IL

Built 1975 Load: 26.9 t ADT: 100

ILL 71

Fair

Over: STREAM

2.93 MI SW OF US 52, LaSalle, IL

Built 1942 Load: 27.2 t ADT: 5,250

FAS270 CH19

Fair

Over: LITTLE VERMILION

N 4250,E 325, LaSalle, IL

Built 1950 Load: 27.2 t ADT: 1,100

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