St. Clair County, IL

502 public highway bridges

St. Clair County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, St. Clair County, Illinois contains 502 public highway bridges. Roughly 34.7% are rated “Good,” 25.7% “Fair,” and 8% “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.

502
Total Bridges
34.7%
Good
25.7%
Fair
8%
Poor Condition

Condition Distribution

Good
34.7% (174)
Fair
25.7% (129)
Poor
8% (40)

All Bridges (502)

SAUGET INDUSTRIAL

Good

Over: ICRR DITCH

.26MI N OF I-255, St. Clair, IL

Built 1994 Load: 29.5 t ADT: 7,550

ILL 15

Good

Over: LITTLE MUD CREEK

E CL ST LIBORY, St. Clair, IL

Built 1936 Load: 30.1 t ADT: 1,850

I-64 EB

Good

Over: NSRR

0.4 mi W of 25th St., St. Clair, IL

Built 1968 Load: 31.4 t ADT: 37,900

OLD COLV RD MS6000

Good

Over: OGLE CREEK

.32 MI N RTE 50, St. Clair, IL

Built 1980 Load: 32.1 t ADT: 9,900

ST CLAIR AVE WB

Good

Over: HARDING DITCH

1.5 M W ILL 157, St. Clair, IL

Built 1940 Load: 32.4 t ADT: 5,900

ILL 163

Good

Over: N PRAIRIE duPONT CR

2.6 M S JCT ILL 157, St. Clair, IL

Built 1959 Load: 32.4 t ADT: 3,150

I-64 EB

Good

Over: Metrolink, Abandoned RR'

0.3mi E of 25th St., St. Clair, IL

Built 1973 Load: 32.4 t ADT: 36,450

I-64 WB

Good

Over: Metrolink, Abandoned RR'

0.3mi E of 25th St., St. Clair, IL

Built 1973 Load: 32.4 t ADT: 36,450

ILL 4

Good

Over: S2 Trib L Silver Crk

1.4 MI S OF LEBANON, St. Clair, IL

Built 1990 Load: 32.4 t ADT: 6,050

IL 159

Good

Over: Trib to Richland Crk

0.47MI. N IL 156, St. Clair, IL

Built 2006 Load: 32.4 t ADT: 5,300

IL 15 FAP 103

Good

Over: SUGAR CREEK

.85 MI E. GREENMOUNT, St. Clair, IL

Built 2009 Load: 32.4 t ADT: 12,500

IL 161

Good

Over: WOLF BRANCH CREEK

E OF IL 159, St. Clair, IL

Built 1989 Load: 32.4 t ADT: 19,600

IL 111

Good

Over: SCHOENBERGER CREEK

1/2 MI N OF I-64, St. Clair, IL

Built 1930 Load: 32.4 t ADT: 4,600

OLD FREEBURG CH 4

Good

Over: SUGAR CR

1.25 MI S ILL 13-460, St. Clair, IL

Built 1977 Load: 32.4 t ADT: 500

BETHEL SCH RD/ TR

Good

Over: BRANCH OF OGLE CREEK

2.3 MI N OF OFALLON, St. Clair, IL

Built 1985 Load: 32.4 t ADT: 2,000

FAS 848

Good

Over: MUD CREEK

3.75 MI E IL 13, St. Clair, IL

Built 1986 Load: 32.4 t ADT: 550

TROY OFAL RD/FAU91

Good

Over: ENGLE CREEK

LINCOLN ST. O'FALLON, St. Clair, IL

Built 1988 Load: 32.4 t ADT: 6,500

TR 37A

Good

Over: ROCK SPRINGS BRANCH

.5 M EAST CH 61, St. Clair, IL

Built 1989 Load: 32.4 t ADT: 575

FAU 9169/ HARTMAN

Good

Over: BRANCH RICHLAND CK

1 MILE S O'FALLON, St. Clair, IL

Built 1992 Load: 32.4 t ADT: 10,300

JEFFERSON ROAD

Good

Over: SILVER CREEK

2.5 MI WEST ILL 4, St. Clair, IL

Built 1996 Load: 32.4 t ADT: 3,950

FRANK SCOTT PKWY W

Good

Over: METROLINK

1/8 MI. NE OF RT 161, St. Clair, IL

Built 2001 Load: 32.4 t ADT: 14,200

FRANK SCOTT PKWY W

Good

Over: UNNAMED TRIBUTARY

0.2 MI WEST CH 81, St. Clair, IL

Built 2001 Load: 32.4 t ADT: 12,500

PERRIN RD/CH66

Good

Over: TRIB OF SILVER CREEK

1 MI E IL 4, St. Clair, IL

Built 2004 Load: 32.4 t ADT: 425

CLINTON C.L. RD/CH

Good

Over: QUEENS LAKE BRANCH

.9 MI N. OF IL 177, St. Clair, IL

Built 2006 Load: 32.4 t ADT: 175

CIRCLE DR/CH 83

Good

Over: LITTLE CANTEEN CREEK

1.5MI E ILL RT 157, St. Clair, IL

Built 2009 Load: 32.4 t ADT: 275

EAST O'FALLON DR.

Good

Over: LITTLE CANTEEN CREEK

1.5 MI W OF RT. 159, St. Clair, IL

Built 2011 Load: 32.4 t ADT: 950

Five Forks CH 48

Good

Over: Drum Hill Branch

0.9 Mi SW IL 15, St. Clair, IL

Built 2013 Load: 32.4 t ADT: 75

Old Freeburg Rd

Good

Over: Trib of Richland Cr

.5 M SE IL 15, St. Clair, IL

Built 2012 Load: 32.4 t ADT: 350

Black Lane

Good

Over: Harding Ditch

1.25 mi. N of Bunkum, St. Clair, IL

Built 2013 Load: 32.4 t ADT: 2,500

KEIM BRIDGE/ TR 20

Good

Over: LIVELY BRANCH

1 M S ILL 156, St. Clair, IL

Built 1977 Load: 32.4 t ADT: 375

EIFF RD/ TR 289

Good

Over: BRANCH MUDCREEK

1 MI W CO LINE ROAD, St. Clair, IL

Built 1980 Load: 32.4 t ADT: 225

QUIRIN RD/TR 84

Good

Over: WEST FORK CREEK

3 MI SW SMITHTON, St. Clair, IL

Built 1983 Load: 32.4 t ADT: 350

WEILMNSTR RD/ TR 3

Good

Over: LITTLE MUDCREEK

0.5 MI N DARMSTADT, St. Clair, IL

Built 1983 Load: 32.4 t ADT: 10

KNAB ROADTR 209

Good

Over: WEST FORK CK

2 MI W IL 159, St. Clair, IL

Built 1984 Load: 32.4 t ADT: 950

ENGL TWP L RD TR 2

Good

Over: BRANCH OF SILVER CK

1.0 M N CH 20, St. Clair, IL

Built 1985 Load: 32.4 t ADT: 450

SCHMIDT LANE TR 16

Good

Over: DOUGLAS CREEK

1.8 MI W IL. 159, St. Clair, IL

Built 1985 Load: 32.4 t ADT: 350

TR11PLEASANT VALLE

Good

Over: BR OF EAST BRANCH

1.3MI EAST OF CH50, St. Clair, IL

Built 1988 Load: 32.4 t ADT: 50

ROACHTOWN ROADTR 8

Good

Over: DOUGLAS CREEK

1.49 MI S. ILL 158, St. Clair, IL

Built 1991 Load: 32.4 t ADT: 800

SCHLUETER RDMSS500

Good

Over: RICHLAND CREEK

0.75 MI E ILL 159, St. Clair, IL

Built 1991 Load: 32.4 t ADT: 900

SAEGER RD/ TR 135

Good

Over: HICKMAN CREEK

2.8 MI W ILL 163, St. Clair, IL

Built 1991 Load: 32.4 t ADT: 325

TR 264

Good

Over: BRANCH LITTLE SILVER

1.5M E IL 4, St. Clair, IL

Built 1993 Load: 32.4 t ADT: 50

WAELTZ RD/ TR 287

Good

Over: DOZA CREEK

1 MI W CH.49, St. Clair, IL

Built 1994 Load: 32.4 t ADT: 50

TR 247

Good

Over: TRIB LITTLE MUD CK

0.6M E CH 92, St. Clair, IL

Built 1996 Load: 32.4 t ADT: 25

FUNK SCHOOL RD

Good

Over: HAZEL CREEK

1.5 MI NO JEFFERSON, St. Clair, IL

Built 1997 Load: 32.4 t ADT: 175

ZINGG ROAD

Good

Over: PRAIRIE DU PONT CK

0.6 MI W OF IL 163, St. Clair, IL

Built 1997 Load: 32.4 t ADT: 450

WASHINGTON CO LINE

Good

Over: MUD CREEK

2.5 MI NORTH ILL 13, St. Clair, IL

Built 1997 Load: 32.4 t ADT: 300

STEIN ROAD

Good

Over: TRIB TO LITTLE MUD C

0.25 W. CH 92, St. Clair, IL

Built 1999 Load: 32.4 t ADT: 50

REHEIS ROAD TR 251

Good

Over: PRAIRIE DU LONG CK

.3 MI W CLUB CONG RD, St. Clair, IL

Built 1998 Load: 32.4 t ADT: 200

HIGH PRAIRIE SCH R

Good

Over: DOUGLAS CREEK

1.2 MILE N, CH 47, St. Clair, IL

Built 1999 Load: 32.4 t ADT: 200

KECK RD/TR 113

Good

Over: ASH CREEK

0.7 MI E IL 158, St. Clair, IL

Built 2010 Load: 32.4 t

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.