St. Clair County, IL

502 public highway bridges

St. Clair County Bridge Snapshot

St. Clair County, Illinois contains 502 public highway bridges in the FHWA National Bridge Inventory. Roughly 34.7% are rated “Good,” 25.7% “Fair,” 8% “Poor,” and 8% 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.

502
Total Bridges
34.7%
Good
8%
Poor
8%
Structurally Deficient

Condition Distribution

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

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial