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)

IL 23/US 52

Good

Over: CROOKED LEG CREEK

0.27M E of IL23/US52, LaSalle, IL

Built 2010 Load: 53.5 t ADT: 2,300

OLD US 34 SBI 18

Good

Over: INDIAN CREEK

IN EARLVILLE, LaSalle, IL

Built 1996 Load: 53.8 t ADT: 1,400

ILL 251

Good

Over: BAILEY CREEK

4.4 MI S OF ILL 71, LaSalle, IL

Built 1999 Load: 54.4 t ADT: 1,700

FAS 263 CH 5

Good

Over: VERMILION RIVER

N 18TH,E 1350, LaSalle, IL

Built 2021 Load: 55.1 t ADT: 800

FAI 39 RMP#15.90

Good

Over: CONVEYOR BELT/PVT RD

600 FT S OF US 6, LaSalle, IL

Built 1985 Load: 56.7 t ADT: 950

CH 33

Good

Over: PECUMSAUGEM CREEK

N 33RD,E 910, LaSalle, IL

Built 2021 Load: 57.7 t ADT: 525

CO RD 16

Good

Over: CEDAR CREEK

N 2451,E 175, LaSalle, IL

Built 1973 Load: 57.7 t ADT: 2,150

IL 71/FAP 627

Good

Over: SALT WELLS CR

4.3 MI E OF IL 178, LaSalle, IL

Built 2006 Load: 58.6 t ADT: 1,700

IL 71 (FAP 311)

Good

Over: Trib to Fox River

1.4 mi SW of US 52, LaSalle, IL

Built 2014 Load: 58.6 t ADT: 4,600

I-39 US 51

Good

Over: STREAM

1.52 MI S OF CH 54, LaSalle, IL

Built 1989 Load: 67.7 t ADT: 19,400

US 52

Good

Over: Little Vermillion River

3.10 M. E. of IL 251, LaSalle, IL

Built 2019 Load: 69.3 t ADT: 1,350

ILL 18

Good

Over: EAGLE CR

1.70 MI.W.OF ILL 23, LaSalle, IL

Built 1972 Load: 89.1 t ADT: 3,550

ILL 23 FAP 68

Good

Over: GOOSE CR

0.7 MI N OF US 6, LaSalle, IL

Built 1977 Load: 89.1 t ADT: 18,300

US 6

Good

Over: CLARK RUN CREEK

0.71 MI E OF ILL 178, LaSalle, IL

Built 1984 Load: 89.1 t ADT: 5,700

IL 71 FAP 311

Good

Over: MISSION CREEK

0.5 MI S OF US 52, LaSalle, IL

Built 2010 Load: 91.4 t ADT: 4,600

IL 71 FAP 311

Good

Over: MISSION CREEK

1.65 MI N OF US 52, LaSalle, IL

Built 2010 Load: 97.2 t ADT: 5,100

IL 71 FAP 311

Good

Over: CREEK & CATTLE XING

0.32 MI N. OF US 52, LaSalle, IL

Built 2010 Load: 97.2 t ADT: 5,100

US 6

Good

Over: NW Half Conveyor B

2.69 M E of IL 351, LaSalle, IL

Built 1985 Load: 99.9 t ADT: 9,050

US 34 /FAP 68

Poor

Over: LITTLE INDIAN CREEK

3.6 MI NE/ILL 23 (S), LaSalle, IL

Built 1952 ADT: 4,100

ROCKWELL RD

Poor

Over: VERMILION RIVER

E OF UNION ST, LaSalle, IL

Built 1940 ADT: 250

MS-7711 (GLENN ST)

Poor

Over: LONG CREEK

GLENN OV LONG CR, LaSalle, IL

Built 1964 ADT: 525

FAS 174/CH 9

Poor

Over: PECUMSAGAN CREEK

E 12TH,N 3225, LaSalle, IL

Built 1962 Load: 6.2 t ADT: 150

TR 225

Poor

Over: SPRING CREEK

N 34TH E 090, LaSalle, IL

Built 1965 Load: 7.1 t ADT: 125

TR-359 A

Poor

Over: STREAM

N 2649 E 2425, LaSalle, IL

Built 1971 Load: 8.7 t ADT: 50

TR-2 LASALLE RD

Poor

Over: WAUPECON CR

.5 MI N GARDNER RD, LaSalle, IL

Built 1963 Load: 9.1 t ADT: 25

US ROUTE 52

Poor

Over: FOX RIVER

2.10 MI W OF ILL 71, LaSalle, IL

Built 1931 Load: 10.7 t ADT: 1,850

WASHINGTON ST

Poor

Over: GUM CREEK

WASH ST OV GUM CR, LaSalle, IL

Built 1920 Load: 14.3 t ADT: 175

TR-4

Poor

Over: BRUSH CREEK

E 0TH N 3905, LaSalle, IL

Built 1972 Load: 15.2 t ADT: 100

CH 23 EXT

Poor

Over: ILL CENTRAL RR

WALNUT ST OVER IC RR, LaSalle, IL

Built 1942 Load: 15.6 t ADT: 1,600

OR 2500 UTICA SHOR

Poor

Over: CLARK RUN

N 2853,E 790, LaSalle, IL

Built 1976 Load: 16.2 t ADT: 1,400

TR 122

Poor

Over: PRAIRIE CR

E 7TH N 580, LaSalle, IL

Built 1969 Load: 17.2 t ADT: 25

TR 491

Poor

Over: DRAINAGE DITCH

N 18TH E 560, LaSalle, IL

Built 1967 Load: 18.1 t ADT: 150

TR 232

Poor

Over: CROOKED LEG CREEK

E 13TH N 4150, LaSalle, IL

Built 1961 Load: 19.4 t ADT: 50

UNION ST

Poor

Over: GUM CR

UNION ST OV GUM CR, LaSalle, IL

Built 1920 Load: 19.4 t ADT: 125

10TH ST

Poor

Over: FIRST CR

10TH ST W OF 1ST AVE, LaSalle, IL

Built 1947 Load: 19.4 t ADT: 100

POST ST

Poor

Over: GOOSE CR

300FT N OF PRAIRIE, LaSalle, IL

Built 1940 Load: 19.4 t ADT: 650

RD TO LANDFILL

Poor

Over: ILL RV BACK WATER

E 209TH N 2605, LaSalle, IL

Built 1932 Load: 20.1 t ADT: 75

SENECA ST#2300

Poor

Over: STREAM

N 2553,E 2890, LaSalle, IL

Built 1965 Load: 21.4 t ADT: 1,600

TR-222

Poor

Over: TRIB INDIAN CR

E 1250TH N 4630, LaSalle, IL

Built 1977 Load: 21.4 t ADT: 250

I-39 NB/US 51 NB

Poor

Over: TOMAHAWK CREEK

3.5 MI N OF I-80, LaSalle, IL

Built 1979 Load: 21.7 t ADT: 9,300

TR-43

Poor

Over: SOMONAUK CREEK

N 45TH E 2602, LaSalle, IL

Built 1953 Load: 21.7 t ADT: 100

MS6240 (INDIANA AV

Poor

Over: MENDOTA CR

100 FT N BURLINGTON, LaSalle, IL

Built 1916 Load: 22.0 t ADT: 100

FAU 6166

Poor

Over: EAGLE CREEK

E 16TH N 1399, LaSalle, IL

Built 1960 Load: 22.7 t ADT: 75

TR-148

Poor

Over: DRAINAGE DITCH

E 8TH N 4270, LaSalle, IL

Built 1969 Load: 23.0 t ADT: 10

TR 239

Poor

Over: SPRING CREEK

N 33RD E 050, LaSalle, IL

Built 1964 Load: 23.7 t ADT: 225

US 34 FAP 587

Poor

Over: INDIAN CREEK

12.88 MI E OF IL 251, LaSalle, IL

Built 1952 Load: 24.3 t ADT: 2,000

TR-211

Poor

Over: L Vermillion river

N 35TH E 350, LaSalle, IL

Built 1963 Load: 24.3 t ADT: 200

TR 402

Poor

Over: OTTER CREEK

E 24TH N 1550, LaSalle, IL

Built 1959 Load: 24.3 t ADT: 50

US 6

Poor

Over: N. KICKAPOO CR

8.39 MI E OF ILL 71, LaSalle, IL

Built 1980 Load: 25.3 t ADT: 2,850

TR-332

Poor

Over: COVEL CREEK

E 20TH N 2440, LaSalle, IL

Built 1970 Load: 25.6 t ADT: 50

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.