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 282

Fair

Over: COVEL CREEK

N 2501 E 1650, LaSalle, IL

Built 1965 Load: 27.2 t ADT: 500

TR-157

Fair

Over: BRUSH CREEK

N 39TH E 015, LaSalle, IL

Built 1971 Load: 27.9 t ADT: 75

FAS 174N/CH 41

Fair

Over: SUTPHENS RUN

E 1351,N 4500, LaSalle, IL

Built 1977 Load: 27.9 t ADT: 950

TR 441

Fair

Over: COVEL CREEK

N 22ND E 2290, LaSalle, IL

Built 1977 Load: 27.9 t ADT: 25

TR 276

Fair

Over: WOLF CREEK

E 16TH N 1525, LaSalle, IL

Built 1965 Load: 28.2 t ADT: 325

TR 4

Fair

Over: STREAM

E 30TH N 3125, LaSalle, IL

Built 1965 Load: 28.5 t ADT: 50

TR 427

Fair

Over: COVEL CREEK

N 23RD E 1825, LaSalle, IL

Built 1971 Load: 28.5 t ADT: 50

FAS 1176 CH 10

Fair

Over: FOURMILE GROVE

E 7TH,N 4725, LaSalle, IL

Built 1935 Load: 28.8 t ADT: 250

US 6

Fair

Over: INTERMITTENT STREAM

2.86 MI E OF ILL 71, LaSalle, IL

Built 1958 Load: 29.2 t ADT: 4,050

TR - 77

Fair

Over: LITTLE INDIAN CREEK

E 2175 N 4340, LaSalle, IL

Built 1968 Load: 29.2 t ADT: 75

TR 209

Fair

Over: TOMAHAWK CR

N 3550 E 615, LaSalle, IL

Built 1959 Load: 29.5 t ADT: 50

TR 244

Fair

Over: BUCK CREEK

E 14TH N 3395, LaSalle, IL

Built 1964 Load: 29.5 t ADT: 125

TR 127

Fair

Over: LITTLE VERMILLION CR

N 4050 E 660, LaSalle, IL

Built 1972 Load: 29.5 t ADT: 25

ILL 71 AND ILL 23

Fair

Over: IL RV & ACC RD

1 MILE SOUTH US 6, LaSalle, IL

Built 1981 Load: 30.1 t ADT: 22,900

TR-20A

Fair

Over: SPRING CREEK

E 1ST N 3410, LaSalle, IL

Built 1966 Load: 30.1 t ADT: 25

TR 0104A0

Fair

Over: STREAM

E 6TH N 1130, LaSalle, IL

Built 1963 Load: 30.1 t ADT: 100

PONTIAC ST

Fair

Over: BAILEY CREEK

PONTIAC ST OV BAI CR, LaSalle, IL

Built 1962 Load: 30.1 t ADT: 250

ILL 178

Fair

Over: VERMILION RIVER

3.7 MI S OF ILL 71, LaSalle, IL

Built 1934 Load: 30.5 t ADT: 1,650

TR 561

Fair

Over: CREEK

N 6TH E 750, LaSalle, IL

Built 1963 Load: 30.8 t ADT: 10

FAU 6009/N. 44TH R

Fair

Over: LITTLE VERMILIAN R.

N 44TH E 405, LaSalle, IL

Built 1971 Load: 31.1 t ADT: 25

CO RD 19

Fair

Over: LITTLE VERMILION

N 3973,E 650, LaSalle, IL

Built 1956 Load: 31.4 t ADT: 600

TR-22

Fair

Over: PIKE CREEK

E 1ST N 4550, LaSalle, IL

Built 1972 Load: 31.8 t ADT: 100

TR 158

Fair

Over: VERMILION CREEK

E 9TH N 4275, LaSalle, IL

Built 1973 Load: 32.1 t ADT: 50

ILL 23 FAP 68

Fair

Over: BUCK CREEK

2.36 MI S OF US 52, LaSalle, IL

Built 1970 Load: 32.4 t ADT: 3,350

FAS258 CH2

Fair

Over: INDIAN CREEK

E 2075 N 3510, LaSalle, IL

Built 1959 Load: 32.4 t ADT: 1,750

TR 285

Fair

Over: LITTLE VERMILLION R

N 30TH E 410, LaSalle, IL

Built 1965 Load: 32.4 t ADT: 625

CH 1

Fair

Over: CROOKED LEG CREEK

E 1553,N 4090, LaSalle, IL

Built 1976 Load: 32.4 t ADT: 775

CH 64

Fair

Over: VERMILION RIVER

N 15TH,E 1550, LaSalle, IL

Built 1976 Load: 32.4 t ADT: 1,150

TR 155A

Fair

Over: MISSION CREEK

N 39TH E 2860, LaSalle, IL

Built 1976 Load: 32.4 t ADT: 75

CH 40

Fair

Over: OTTER CREEK

N 13TH E2490, LaSalle, IL

Built 1979 Load: 32.4 t ADT: 600

TR 187 N 37TH

Fair

Over: SPRING CREEK

N 37TH E 125, LaSalle, IL

Built 1979 Load: 32.4 t ADT: 200

TR 210 E 1175TH

Fair

Over: BR INDIAN CREEK

E 1175TH N 4615, LaSalle, IL

Built 1980 Load: 32.4 t ADT: 50

TR 205 N 36TH

Fair

Over: TOMAHAWK CREEK

N36TH E680, LaSalle, IL

Built 1980 Load: 32.4 t ADT: 25

TR 535 N 14TH RD

Fair

Over: PRAIRIE CREEK

N14TH E 1925, LaSalle, IL

Built 1980 Load: 32.4 t ADT: 275

FAS 1273/CH 36

Fair

Over: DEADLY RUN

N2550 RD E2950, LaSalle, IL

Built 1980 Load: 32.4 t ADT: 1,050

TR 407 N 24TH

Fair

Over: COVEL CR

N 24TH E 1860, LaSalle, IL

Built 1981 Load: 32.4 t ADT: 25

TR 75 N 4325TH

Fair

Over: INDIAN CR

N 4325TH E 1525, LaSalle, IL

Built 1981 Load: 32.4 t ADT: 50

TR 571

Fair

Over: LONG POINT CR

N 1 ST RD E 850, LaSalle, IL

Built 1981 Load: 32.4 t ADT: 50

TR 018

Fair

Over: TRIB CEDAR CREEK

E1ST N2120, LaSalle, IL

Built 1982 Load: 32.4 t ADT: 75

TR 322 E 19TH

Fair

Over: BR COVEL CR

E 19TH N 2440, LaSalle, IL

Built 1982 Load: 32.4 t ADT: 25

TR-156 E 9TH

Fair

Over: PECUMSAUGAN CR

E 9TH N 3340, LaSalle, IL

Built 1982 Load: 32.4 t ADT: 100

TR 160

Fair

Over: SUTPHENS RUN

E 9TH N 4465, LaSalle, IL

Built 1983 Load: 32.4 t ADT: 25

TR 169A

Fair

Over: L VERMILION '

N 3850TH E 620, LaSalle, IL

Built 1983 Load: 32.4 t ADT: 50

TR 238 E 14TH

Fair

Over: INDIAN CREEK

E14TH N4440TH, LaSalle, IL

Built 1983 Load: 32.4 t ADT: 225

FAS 269 (CH12, N46

Fair

Over: FOURMILE GROVE CR

N46TH E750, LaSalle, IL

Built 1983 Load: 32.4 t ADT: 375

TR 3 N48TH

Fair

Over: TRIB INDIAN CREEK

N48TH E948, LaSalle, IL

Built 1983 Load: 32.4 t ADT: 25

TR 160 E 9TH

Fair

Over: BR INDIAN CR

E9TH,N4750TH, LaSalle, IL

Built 1983 Load: 32.4 t ADT: 25

TR 166 B

Fair

Over: LONG PT CR

E 10TH N 370 GROVLD, LaSalle, IL

Built 1984 Load: 32.4 t ADT: 25

TR 158

Fair

Over: TOMAHAWK CR OPHIR

E 9TH N 3705, LaSalle, IL

Built 1984 Load: 32.4 t ADT: 25

TR 354

Fair

Over: CREEK

E 21ST RD N 2450, LaSalle, IL

Built 1984 Load: 32.4 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