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)

Sort:

IL 4

Over: TRIB TO MUD CREEK

3.5 M N JCT 13, St. Clair, IL

Built 1928 Load: 32.1 t ADT: 2,050

EB CD TO IL 3 SB "

Over: UPRR

PIER D11-> PIER O-17, St. Clair, IL

Built 1972 Load: 32.1 t ADT: 5,500

FAI 255-RAMP 9

Over: CANTEEN CREEK

I-255 SO OF CO LINE, St. Clair, IL

Built 1984 Load: 32.1 t ADT: 2,050

ILL 177

Over: SILVER CREEK

WCL MASCOUTAH, St. Clair, IL

Built 1961 Load: 32.4 t ADT: 7,000

ILL 159

Over: W FORK RICHLAND CRK

2 M S SMITHTON, St. Clair, IL

Built 1954 Load: 32.4 t ADT: 4,600

FAI 64 WB

Over: LITTLE SILVER CREEK

1.5 MI W OF ILL 4, St. Clair, IL

Built 1971 Load: 32.4 t ADT: 20,950

US 50

Over: SILVER CREEK BKWATER

1.3 MI W ILL 4, St. Clair, IL

Built 1939 Load: 32.4 t ADT: 16,000

FAU 9166 LINCOLN H

Over: OGLES CREEK

.14 E IL 159, St. Clair, IL

Built 1985 Load: 32.4 t ADT: 17,900

IL 4

Over: N1 TRIB L SILVER CRK

2 MI N OF US 50, St. Clair, IL

Built 1930 Load: 32.4 t ADT: 6,800

IL 15

Over: Abandoned RR,Salt Storag

2 mi NW of IL 159, St. Clair, IL

Built 1959 Load: 32.4 t ADT: 21,800

LAKE DRIVE

Over: DRAINGE TO FHSP LAKE

2.5 MI NW OF IL 157, St. Clair, IL

Built 1929 Load: 32.4 t ADT: 2,750

SCOTT TROY FAU 917

Over: HAGEMANN CREEK

2.9 MI N U.S. RTE 50, St. Clair, IL

Built 1976 Load: 32.4 t ADT: 7,500

TOWN HALL ROAD CH

Over: RAYHILL SLOUGH

2.0 MI E OF ILL RTE4, St. Clair, IL

Built 1979 Load: 32.4 t ADT: 350

FAU 9167 SULLIVAN

Over: METRO LINK

0.2M N ILL 161, St. Clair, IL

Built 1980 Load: 32.4 t ADT: 8,250

BOHLEYSVILLE RD CH

Over: PRAIRIE DULONG CR

4.6 MI S MILLSTADT, St. Clair, IL

Built 1981 Load: 32.4 t ADT: 350

CEMETERY RD FAS 84

Over: JACKS RUN CREEK

0.5 MI E FREEBURG, St. Clair, IL

Built 1983 Load: 32.4 t ADT: 1,050

FAU 9175

Over: OGLE CREEK

0.5M S MADISON C LN, St. Clair, IL

Built 1983 Load: 32.4 t ADT: 8,100

SAXTOWN RD/ CH 71

Over: WEST FORK CREEK

2.5 MI S MILLSTADT, St. Clair, IL

Built 1985 Load: 32.4 t ADT: 750

RISDON SCHL/ FAS 8

Over: DOZA CREEK

3.0 MI SW MARISSA, St. Clair, IL

Built 1986 Load: 32.4 t ADT: 325

RISDON SCHL/ FAS 8

Over: BRANCH OF DOZA CREEK

0.5 MI SW MARISSA, St. Clair, IL

Built 1986 Load: 32.4 t ADT: 325

FIVE FORKSE.RD/CH

Over: SILVER CR

4 M SSE FREEBURG, St. Clair, IL

Built 1987 Load: 32.4 t ADT: 350

FAU 9212

Over: MO. PAC. R.R.

PARKS AIRPORT CAHOKI, St. Clair, IL

Built 1980 Load: 32.4 t ADT: 6,450

FAU 9241

Over: HARDIN DITCH

100'S ST. CLAIR AVE, St. Clair, IL

Built 1991 Load: 32.4 t ADT: 2,850

HARTMAN LN/ FAU 91

Over: RICHLAND CREEK

2.25 MI S LINCOLN TR, St. Clair, IL

Built 1992 Load: 32.4 t ADT: 10,000

ROBINSON SCH RD/CH

Over: RICHLAND CREEK

1.5 MI E IL 159, St. Clair, IL

Built 1993 Load: 32.4 t ADT: 400

WATERLOO RD/ FAS 8

Over: PRAIRIE DULONG CREEK

.8 MI W FLORAVILLE, St. Clair, IL

Built 1994 Load: 32.4 t ADT: 1,600

WINTER RD CH 49

Over: DOZA CREEK NORTH

2.25 MI S IL 13, St. Clair, IL

Built 1993 Load: 32.4 t ADT: 175

DOUGLAS-MILLSTADT

Over: DOUGLAS CREEK

0.5 MI W IL 159, St. Clair, IL

Built 1996 Load: 32.4 t ADT: 3,200

DOUGLAS FREEBURG R

Over: RICHLAND CREEK

1 MI E OF IL 159, St. Clair, IL

Built 2006 Load: 32.4 t ADT: 3,950

KARCH RD/TR 201

Over: DRUM HILL BRANCH

1.8 ME ILL 15, St. Clair, IL

Built 1981 Load: 32.4 t ADT: 325

CLOVER LEAF/ TR 10

Over: PRAIRIE DUPONT CREEK

2.0 MI E ILL 163, St. Clair, IL

Built 1982 Load: 32.4 t ADT: 125

VILLA DR/FAU 9258

Over: PR DUPONT CREEK

3.3 MI W 59 ST, St. Clair, IL

Built 1983 Load: 32.4 t ADT: 250

LEBANON TROY TR 5

Over: SILVER CR

0.25 MI W RICHWOOD R, St. Clair, IL

Built 1986 Load: 32.4 t ADT: 300

RIESS ROADTR 129

Over: RAYHILL SLOUGH

0.1 MI E WOODLAND RD, St. Clair, IL

Built 1987 Load: 32.4 t ADT: 50

MILBURN SCH RD/TR

Over: OGLE CREEK

1.25 N I64/50 INTCHG, St. Clair, IL

Built 1990 Load: 32.4 t ADT: 6,550

DOZA CREEK RD

Over: DOZA CREEK

0.25M S OF CH24, St. Clair, IL

Built 1996 Load: 32.4 t ADT: 375

TR-186 Risdon Sch

Over: Doza Creek

1.5MI WEST OF CH 27, St. Clair, IL

Built 1998 Load: 32.4 t ADT: 75

BOWLER RD

Over: OGLES CREEK

.25MI N OF CH45, St. Clair, IL

Built 1998 Load: 32.4 t ADT: 275

ILL 15

Over: HARDING DITCH

0.3 M W JCT 157, St. Clair, IL

Built 1940 Load: 32.7 t ADT: 30,000

IL 161

Over: NSRR

0.6 mi E of IL 159, St. Clair, IL

Built 1990 Load: 32.7 t ADT: 19,600

GRAY PLAZA

Over: TRIBUTARY SILVER CREEK

130' N OF AIR GUARD WAY, St. Clair, IL

Built 1970 Load: 32.7 t ADT: 20

ILL 158

Over: LOOP CREEK

0.3 M N JCT ILL 177, St. Clair, IL

Built 1923 Load: 33.0 t ADT: 5,350

FAU 9206-WATER ST

Over: Prairie duPont Canal

1.5M S ILL 157, St. Clair, IL

Built 1984 Load: 33.4 t ADT: 1,350

EMERALD MOUND TR 2

Over: LITTLE SILVER CR

1.25 MI NE ILL 4, St. Clair, IL

Built 1964 Load: 33.7 t ADT: 25

IL 203

Over: DRNG TO CAHOKIA CNL

0.1 M N OLD US 40, St. Clair, IL

Built 1960 Load: 34.0 t ADT: 3,500

ILL 177

Over: Reinhardt SLOUGH

1.4M E OF JCT IL 4, St. Clair, IL

Built 1994 Load: 34.0 t ADT: 2,450

SCOTT-TROY/ FAU 91

Over: ENGLE CREEK

1.65MI N U.S.RTE 50, St. Clair, IL

Built 1973 Load: 34.0 t ADT: 9,250

FAI 64 WB

Over: SILVER CREEK

1.79 MI E OF ILL 158, St. Clair, IL

Built 1971 Load: 34.3 t ADT: 20,950

FAI 64 EB

Over: LITTLE SILVER CREEK

1.5 MI W OF ILL 4, St. Clair, IL

Built 1971 Load: 34.3 t ADT: 20,950

SBI-4

Over: CAHOKIA CANAL

E ILL 203 S BEND RD, St. Clair, IL

Built 1923 Load: 34.7 t ADT: 900

Read our methodology - how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →

Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

P

Compiled by PlainBridges, Independent data publisher

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.