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:

FAI 64 WB

Over: ILL 161

1.5 MI W NEW BADEN, St. Clair, IL

Built 1972 ADT: 9,500

FAI 64 RAMP #167&1

Over: ST CLAIR AVE/FAU9166

0.25 MI E OF 25TH ST, St. Clair, IL

Built 1973 ADT: 6,350

Metrolink

Over: 25th St.

0.25 mi N of I-64, St. Clair, IL

Built 1974 ADT: 4,750

IL 3 NB TO EB CD "

Over: I-55/64 EB CD "D" & UPRR

PIER P1 TO PIER H1, St. Clair, IL

Built 1972 ADT: 16,600

I-55/64 WB CD

Over: 4TH ST IN E ST LOUIS

WB CD over 4th St, St. Clair, IL

Built 1965 ADT: 150

Davis St Ferry Rd

Over: FAI 255

1.5 MI. S OF DUPO, St. Clair, IL

Built 1979 ADT: 41,000

S Main St/Old IL 3

Over: FAI 255

0.1MI SE DUPO, St. Clair, IL

Built 1983 ADT: 35,700

IL 3 NB Ramp E

Over: FAI 255

N DUPO, St. Clair, IL

Built 1983 ADT: 500

IL 3 SB Ramp F

Over: FAI 255

N DUPO, St. Clair, IL

Built 1981 ADT: 500

I 255

Over: MCBRIDE AVE/TR12

1/2 mi S of IL 157, St. Clair, IL

Built 1979 ADT: 1,450

FAI 255

Over: ILL 157

0.50 SO OF DORIS AVE, St. Clair, IL

Built 1979 ADT: 7,550

FAI 255

Over: DORIS AVE/FAU 9199

0.5 M N OF ILL 157, St. Clair, IL

Built 1979 ADT: 1,050

FAI 255

Over: JEROME LA FAU 9197

0.5 Mi N OF IL 157, St. Clair, IL

Built 1979 ADT: 1,650

FAI 255

Over: MOUSETTE LN-FAU 9200

0.4 MI NO DORIS AVE., St. Clair, IL

Built 1979 ADT: 2,950

I-255

Over: Church Rd,UPRR,KCSRR

1.25 mi SW of IL 15, St. Clair, IL

Built 1982 ADT: 1,150

FAI 255

Over: BOND AVE

S OF ILL 15/MO.AVE, St. Clair, IL

Built 1979 ADT: 3,350

FAI 255

Over: ILL 15

1.3 MI S OF STATE ST, St. Clair, IL

Built 1981 ADT: 31,800

POCKET RD/ FAU 923

Over: FAI 255

S EDGE FHSP, St. Clair, IL

Built 1981 ADT: 44,300

PARK ROAD TR 515A

Over: I255 & HARDING DITCH

FRANK HOLTEN STATE PARK, St. Clair, IL

Built 1981 ADT: 44,300

LAKE DR/ FAU 9185

Over: FAI 255/HARDING DTCH

.3 MI E IL 111, St. Clair, IL

Built 1981 ADT: 44,300

FAI 255

Over: STATE ST

0.5 M S ST CLAIR AV, St. Clair, IL

Built 1982 ADT: 5,950

FAI 255

Over: SUMMIT AVE

0.3 MI N OF STATE ST, St. Clair, IL

Built 1982 ADT: 1,900

I-255 NB

Over: St. Clair Ave & Metrolin

0.50 mi N of State St, St. Clair, IL

Built 1982 ADT: 11,800

I-255 SB

Over: St. Clair Ave & Metrolin

0.50 mi N State St, St. Clair, IL

Built 1982 ADT: 11,800

FAI 255 NB

Over: FAI 64

.75 MI SO BUNKUM RD, St. Clair, IL

Built 1981 ADT: 16,500

FAI 255 SB

Over: FAI 64

.75 MI SO BUNKUM RD, St. Clair, IL

Built 1981 ADT: 91,400

BUNKUM RD/ FAU 916

Over: FAI 255

0.2MI N OF FAI 64, St. Clair, IL

Built 1985 ADT: 43,500

FOREST BLVD/FAU 91

Over: FAI 255/HARDING DITH

1.4MI N FAI 64, St. Clair, IL

Built 1985 ADT: 43,500

I-255 SB

Over: Black Lane, CSXRR, CSXRR

1.2 mi S of I-55/70, St. Clair, IL

Built 1985 ADT: 2,500

I-255 NB

Over: CSXRR, CSXRR, Black Lane

1.2 mi S of I-55/70, St. Clair, IL

Built 1985 ADT: 2,500

I-55/64EB mainlne"

Over: UPRR,IL 3 ramp,UPRR,UPRR

PIER BC1 TO ABUT C31, St. Clair, IL

Built 1967 ADT: 23,900

I-55/64WB mainlne"

Over: UPRR,IL 3 Ramp,UPRR,UPRR

PIER BC1-> ABUT B31, St. Clair, IL

Built 1967 ADT: 5,300

I-55/64 CD WB "G"

Over: Trendley Avenue

PIER G1 TO ABUT G14, St. Clair, IL

Built 1968 ADT: 275

IL15 Ramp G to SB2

Over: IL 163

0.2mi S of IL 15, St. Clair, IL

Built 1979 ADT: 2,150

81ST ST/CH35

Over: FAI 64/CD 360-361

1 MI WEST OF ILL 157, St. Clair, IL

Built 1969 ADT: 91,400

255NB Ramp E to IL

Over: IL 163

0.2mi S of IL 15, St. Clair, IL

Built 1980 ADT: 2,150

US 50

Over: CH 50/SUMERFIELD RD

.5M N OF SUMMERFIELD, St. Clair, IL

Built 1984 ADT: 375

Rieder Road TR 222

Over: FAI 64

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

Built 2017 ADT: 41,900

MLK RAMP 1 EB

Over: IL 3,TRRA,UPRR,MoAv,55-6

EAST APPROACH MLK, St. Clair, IL

Built 2000 ADT: 10

MLK RAMP 2 WB

Over: IL 3,TRRA,UPRR,MoAv,55-6

WEST APPROACH MLK, St. Clair, IL

Built 1999 ADT: 1,800

IL 161 NB

Over: DutchHollow,Metrolink,cr

2.2 mi SE of IL 157, St. Clair, IL

Built 1992 ADT: 475

IL 161 SB

Over: DutchHollow,Metrolink,cr

2.2mi SE of IL 157, St. Clair, IL

Built 1992 ADT: 475

ILL 15 (WB)

Over: STATE ST/FAU 9281

0.5M E OF IL 158, St. Clair, IL

Built 1995 ADT: 1,700

ILL 15 (EB)

Over: STATE ST/FAU 9281

0.5 M E IL 158, St. Clair, IL

Built 1995 ADT: 1,700

FAI 64 EB

Over: ILL 157

CASEYVILLE, St. Clair, IL

Built 2007 ADT: 11,600

FAI 64 WB

Over: ILL 157

CASEYVILLE, St. Clair, IL

Built 2007 ADT: 11,600

I-64 EB

Over: OLD COLLINSVILLE RD

1.01MI E IL 159, St. Clair, IL

Built 2007 ADT: 9,900

I-64 WB

Over: OLD COLLINSVILLE RD

1.02MI E OF ILL 159, St. Clair, IL

Built 2007 ADT: 9,900

RELOCATED I-70 EB

Over: 1ST STREET in E St L

0.4 mi N of I-55/64, St. Clair, IL

Built 2013 ADT: 900

RELOCATED I-70 WB

Over: 1ST STREET in E ST L

0.4 mi N of I-55/64, St. Clair, IL

Built 2013 ADT: 900

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

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