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)

ILL 23 FAP 68

Poor

Over: COVEL CREEK

4.95 MI S OF ILL 71, LaSalle, IL

Built 1960 Load: 25.9 t ADT: 5,550

TR 310

Poor

Over: WOLF CREEK

E 18TH N 1625, LaSalle, IL

Built 1964 Load: 26.9 t ADT: 400

US 52

Poor

Over: MISSION CREEK

0.3 MI W OF ILL 71, LaSalle, IL

Built 1930 Load: 27.9 t ADT: 1,850

TR 37

Poor

Over: LITTLE INDIAN CREEK

N 45TH,E 2150, LaSalle, IL

Built 1974 Load: 28.2 t ADT: 200

FAS261 CH34

Poor

Over: STREAM

N 27TH,E 950, LaSalle, IL

Built 1961 Load: 28.5 t ADT: 1,000

TR-112-A

Poor

Over: BR FOURMILE GROVE CR

E 6TH N 4640, LaSalle, IL

Built 1961 Load: 28.5 t ADT: 25

TR 123

Poor

Over: LITTLE INDIAN CREEK

N 41ST E 2110, LaSalle, IL

Built 1962 Load: 28.8 t ADT: 175

TR 535

Poor

Over: PRAIRIE CREEK

N 14TH E 1975, LaSalle, IL

Built 1974 Load: 28.8 t ADT: 275

TR 322

Poor

Over: COUEL CREEK

E 19TH N 2275, LaSalle, IL

Built 1973 Load: 29.2 t ADT: 50

ILL 170

Poor

Over: ILL MICH CANAL

0.42 MI S OF US 6, LaSalle, IL

Built 1940 Load: 29.8 t ADT: 5,550

TR-177

Poor

Over: TOMAHAWK CREEK

N 38TH E 815, LaSalle, IL

Built 1964 Load: 30.1 t ADT: 10

I-39 SB/US 51SB

Poor

Over: C & NW RR

0.21 MI N OF US 52, LaSalle, IL

Built 1977 Load: 30.8 t ADT: 9,350

CO RD 57

Poor

Over: VERMILION RIVER

E 12TH,N 1915, LaSalle, IL

Built 1969 Load: 30.8 t ADT: 200

TR 354

Poor

Over: COVEL CREEK

E 21ST N 2240, LaSalle, IL

Built 1973 Load: 30.8 t ADT: 25

TR 128A

Poor

Over: TOMAHAWK CR

E 7TH N 3610, LaSalle, IL

Built 1963 Load: 31.1 t ADT: 25

TR-282

Poor

Over: Covel Creek

E 16TH N 2275, LaSalle, IL

Built 1966 Load: 31.4 t ADT: 100

CO RD 15

Poor

Over: WALBRIDGE CREEK

E 24TH,N 2885, LaSalle, IL

Built 1971 Load: 31.4 t ADT: 4,700

Powell St.

Poor

Over: Coal Run Creek

R3E, T31N 3rd PM, LaSalle, IL

Built 1984 Load: 32.4 t ADT: 175

TR-18-A

Poor

Over: SANDY CREEK

E 1ST N 1290, LaSalle, IL

Built 1963 Load: 32.7 t ADT: 10

TR-20A

Poor

Over: SPRING CREEK

E 1ST N 3660, LaSalle, IL

Built 1977 Load: 33.4 t ADT: 100

TR 535

Poor

Over: PRAIRE CREEK

N 14TH E 1950, LaSalle, IL

Built 1974 Load: 34.7 t ADT: 275

TR 203

Poor

Over: SPRING CREEK

N 36TH E 150, LaSalle, IL

Built 1977 Load: 34.7 t ADT: 175

US 6 FAP 623

Poor

Over: FOX RIVER

0.68 MI E OF ILL 23, LaSalle, IL

Built 1928 Load: 37.9 t ADT: 10,700

WATER ST/N 4550TH

Poor

Over: INDIAN CREEK

0.44 MI N OF US 34, LaSalle, IL

Built 1925 Load: 38.2 t ADT: 275

ILL 71 AT CEDAR PT

Poor

Over: CEDAR CREEK

2.95 MI W OF US 51, LaSalle, IL

Built 1929 Load: 38.6 t ADT: 2,250

Coal Street

Poor

Over: Coal run Creek

0.5 Mi S. of Ill. 18, LaSalle, IL

Built 1984 Load: 40.5 t ADT: 125

CH 52

Poor

Over: LITTLE INDIAN CREEK

E. 1950 TH N 4775, LaSalle, IL

Built 1992 Load: 49.6 t ADT: 850

TR 158

Poor

Over: TOMAHAWK CREEK

E 9TH N 3960, LaSalle, IL

Built 1975 Load: 54.4 t ADT: 25

ILL 23 FAP 68

Poor

Over: COVEL CREEK

3.35 MI S OF ILL 71, LaSalle, IL

Built 1953 Load: 56.1 t ADT: 5,550

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.