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 BUSINESS BL

Good

Over: GOOSE LAKE DITCH

.7 MI NW I 255, St. Clair, IL

Built 2011 Load: 52.5 t ADT: 6,650

Simmons Rd FAU 917

Good

Over: Ogle Ck

0.4 Mi N of Kyle Rd, St. Clair, IL

Built 2023 Load: 53.5 t ADT: 1,400

IL 157

Good

Over: UPRR

0.7mi E of IL3 in Cahokia, St. Clair, IL

Built 2009 Load: 54.4 t ADT: 10,550

SB RELOCATED IL 3

Good

Over: LAND BRIDGE

UNDER MLK APPR BRDGE, St. Clair, IL

Built 2015 Load: 64.2 t ADT: 1,800

NB RELOCATED IL 3

Good

Over: LAND BRIDGE

UNDER MLK APPR BRDGE, St. Clair, IL

Built 2015 Load: 65.8 t ADT: 1,800

WEST BOULEVARD

Good

Over: EAST TRIB TO LOOP CR

200' NW OF IL 161, St. Clair, IL

Built 1966 Load: 67.4 t ADT: 9,650

IL 4 & 15

Good

Over: KASKASKIA OVERFLOW

0.6 M E JCT IL 4, St. Clair, IL

Built 2009 Load: 75.8 t ADT: 3,600

JEFFERSON RD/ CH 2

Good

Over: HAZEL CREEK

2.00MI E ILL 13, St. Clair, IL

Built 1972 Load: 89.1 t ADT: 275

FAI 64

Good

Over: RAYHILL SLOUGH

0.74 W CLINTON CO, St. Clair, IL

Built 1971 Load: 90.7 t ADT: 31,000

ILL 15 WB TO ILL 1

Good

Over: BR OF RICHLAND CR

E OF ILL 159, St. Clair, IL

Built 1967 Load: 96.2 t ADT: 1,100

FAI 255

Good

Over: GOOSE LAKE DITCH

0.5 M S MOUSETTE LN, St. Clair, IL

Built 1982 Load: 97.2 t ADT: 36,700

ILL 15 EB TO ILL 1

Good

Over: BR OF RICHLAND CR

W OF ILL 159, St. Clair, IL

Built 1967 Load: 97.2 t ADT: 6,000

WINTER RD CH 49

Poor

Over: DOZA CREEK SOUTH

3.5 MI S IL 13, St. Clair, IL

Built 1901 Load: 8.7 t ADT: 175

74TH ST/ FAU 9253

Poor

Over: SO RR 5 W BELLEVILLE

0.5 N IL 13, St. Clair, IL

Built 1955 Load: 16.5 t ADT: 5,450

ILL 157

Poor

Over: GOOSE LAKE CANAL

0.8 M E FAI 255, St. Clair, IL

Built 1932 Load: 19.4 t ADT: 6,000

FAU 9168

Poor

Over: RICHLAND CREEK

0.3 M N OF SHILOH RD, St. Clair, IL

Built 1966 Load: 21.4 t ADT: 8,950

PRESS RD/ TR 197

Poor

Over: RICHLAND CREEK

1.5 MI E ILL. 159, St. Clair, IL

Built 1922 Load: 23.3 t ADT: 375

REIDER TR 222

Poor

Over: ENGEL CREEK

0.75 MI N US 50, St. Clair, IL

Built 1981 Load: 24.9 t ADT: 400

ILL 157

Poor

Over: LITTLE CANTEEN CREEK

IN CASEYVILLE, St. Clair, IL

Built 1929 Load: 27.5 t ADT: 10,900

FIVE FORKSE.RD/CH

Poor

Over: SILVER CR

4 MI SSE FREEBURG, St. Clair, IL

Built 1987 Load: 27.9 t ADT: 350

EMERALD MND RD/CH

Poor

Over: LITTLE SILVER CREEK

0.5MI E ILL RTE 4, St. Clair, IL

Built 1960 Load: 28.2 t ADT: 125

I-55/64; US 40 PSC

Poor

Over: TRRA

P6(PSB) to Pier BC1, St. Clair, IL

Built 1966 Load: 29.5 t ADT: 117,700

HAURY ROAD

Poor

Over: OGLES CREEK

0.5MI W WEIL RD, St. Clair, IL

Built 1995 Load: 29.5 t ADT: 200

CH 68

Poor

Over: MUD CREEK

3.0MI E ILL RTE 13, St. Clair, IL

Built 1962 Load: 30.5 t ADT: 250

N 89TH ST

Poor

Over: CREEK

300 FT. S. BUNKUM RD, St. Clair, IL

Built 1965 Load: 30.8 t ADT: 75

WATERLOO RD/ FAS 8

Poor

Over: GERHARDT CREEK

0.01MI N STC-MON LN, St. Clair, IL

Built 1961 Load: 31.1 t ADT: 1,850

203SB RMP TO 55/70

Poor

Over: DRNG TO CAHOKIA CNL

S of Gateway Racetrk, St. Clair, IL

Built 1960 Load: 32.1 t ADT: 7,600

ILL 15 & 4

Poor

Over: KASKASKIA RIVER

0.2 M E JCT ILL 4, St. Clair, IL

Built 1946 Load: 32.1 t ADT: 3,600

FOREST BLVD(FAU915

Poor

Over: SCHOENBERGER CR.

FOREST BLVD WASH PK, St. Clair, IL

Built 1949 Load: 32.4 t ADT: 775

I-55/70 & US 40 EB

Poor

Over: DRAINAGE CANAL

1/2 Mi E of E St Lou, St. Clair, IL

Built 1960 Load: 33.4 t ADT: 33,650

ILL 177

Poor

Over: Silver Cr Overflow E

2.3mi W IL 4, St. Clair, IL

Built 1961 Load: 33.4 t ADT: 7,000

IL 111

Poor

Over: A&SRR

0.14mi S of I-64, St. Clair, IL

Built 1973 Load: 33.4 t ADT: 13,900

ILL 177

Poor

Over: Silver Cr Overflow W

2.3mi W IL 4, St. Clair, IL

Built 1961 Load: 33.7 t ADT: 7,000

ILL 203 NB

Poor

Over: CAHOKIA CANAL

0.9mi N of 55/70, St. Clair, IL

Built 1960 Load: 35.6 t ADT: 13,500

ILL 203 SB

Poor

Over: CAHOKIA CANAL

0.9mi N of 55/70, St. Clair, IL

Built 1960 Load: 35.6 t ADT: 13,500

ILL 159

Poor

Over: DOUGLAS CREEK

0.8 M N SMITHTON, St. Clair, IL

Built 1954 Load: 37.9 t ADT: 9,400

I-64 EB

Poor

Over: NSRR

0.3 mi E of IL 161, St. Clair, IL

Built 1971 Load: 37.9 t ADT: 15,500

I-64 WB

Poor

Over: NSRR

0.3 mi E of IL 161, St. Clair, IL

Built 1971 Load: 38.2 t ADT: 15,500

TR 298A

Poor

Over: RAYHILL SLOUGH

1M N ILL 177, St. Clair, IL

Built 1956 Load: 39.5 t ADT: 175

I-55/64 WB CD R-LI

Poor

Over: UPRR

PIER G1 TO PIER A21, St. Clair, IL

Built 1969 Load: 47.6 t ADT: 8,350

WERNER RD/ FAU 925

Structurally Deficient

Over: SOUTHERN RR

0.3 MI E 74 ST, St. Clair, IL

Built 1960 ADT: 525

IMBS STATION RD

Structurally Deficient

Over: PRAIRIE DUPONT CK

2.0 MI W IL 163, St. Clair, IL

Built 1997 Load: 3.6 t ADT: 900

I-255

Structurally Deficient

Over: NSRR

0.5 mi S of IL 15, St. Clair, IL

Built 1980 Load: 20.1 t ADT: 41,500

BLACK QUARTER TR 1

Structurally Deficient

Over: SILVER CR

1.0 MI N ILL 13, St. Clair, IL

Built 1961 Load: 20.7 t ADT: 50

TR-19 Midgely Neis

Structurally Deficient

Over: Little Silver Creek

0.1 MI E ILL 4, St. Clair, IL

Built 1957 Load: 22.0 t ADT: 250

PLUM HILL TR 180

Structurally Deficient

Over: LOOP CREEK

0.3 MI S ILL 177, St. Clair, IL

Built 1980 Load: 27.5 t ADT: 350

MUD CREEK TR 308

Structurally Deficient

Over: MUD CREEK

1.5 MI N ILL 13, St. Clair, IL

Built 1969 Load: 31.1 t ADT: 750

OTTEN RD/ TR 107

Structurally Deficient

Over: HICKMAN CREEK

0.2 MI E WAGNER RD, St. Clair, IL

Built 1978 Load: 31.4 t ADT: 250

FREEBURG TWP.TR 20

Structurally Deficient

Over: DRUM HILL BR

1.0 MI W ILL. 4, St. Clair, IL

Built 1966 Load: 32.1 t ADT: 75

I-55/70;/64

Structurally Deficient

Over: CSXRR,NSRR,TRRARR

E. St. Louis, St. Clair, IL

Built 1959 Load: 35.6 t ADT: 67,300

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