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:

I-70 EB

Over: NSRR,TRRA,Industrial Ave

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

Built 2013 ADT: 200

I-70 WB

Over: NSRR,TRRA,Industrial Ave

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

Built 2013 ADT: 200

EB I-70 Flyover Ra

Over: I-55,64,Ramps,KCSRR, CSX

4th level of Quad-Level, St. Clair, IL

Built 2014 ADT: 2,950

EB 70 Ramp to EB 6

Over: I-55 and ramps

Flyover ramp to EB64, St. Clair, IL

Built 2014 ADT: 74,500

WB 64 Ramp to WB 7

Over: I-55/70,Ramps,CSXRR,KCSR

QuadLevel Flyover to 70WB, St. Clair, IL

Built 2014 ADT: 2,950

9TH STREET

Over: FAI 64

East St. Louis, St. Clair, IL

Built 2013 ADT: 74,500

REL IL 3 -Packers

Over: I-70

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

Built 2013 ADT: 44,300

Rel. IL 3 (Packers

Over: St. Clair Ave, TRRA

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

Built 2013 ADT: 3,800

N GREENMOUNT RD

Over: FAI 64

.87 MI S OF US 50, St. Clair, IL

Built 2001 ADT: 58,600

IL 158 NB

Over: Trail,NSRR,Metrolink,Rd

0.5 mi W of Scott AFB, St. Clair, IL

Built 2001 ADT: 25

MLK EB to I-55/64

Over: Reloc IL Rt 3/RR

0.7 mi E of Miss. River, St. Clair, IL

Built 2015 ADT: 1,600

MLK Bridge E Appr.

Over: IL3,TRRA(UPRR),1st,MO Av

0.75 E Mississippi River, St. Clair, IL

Built 2018 ADT: 10

15TH ST-FAU 9155

Over: FAI 64 in E ST Louis

0.79 E OF FAI 70, St. Clair, IL

Built 2012 ADT: 74,500

EXCHANGE AVENUE

Over: I-55/70

E ST L AT BOWMAN YD, St. Clair, IL

Built 2011 ADT: 67,300

E ST L PED BRIDGE

Over: INTERSTATE 64

W of 15th STREET, St. Clair, IL

Built 2010 ADT: 74,500

IL 157

Over: creek,Metrolink,St Clair

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

Built 2017 ADT: 19,600

FAU 9212

Over: UPPER CAHOKIA RD.

CAHOKIA AT PARKS AIR, St. Clair, IL

Built 1980 ADT: 250

MLK bridge

Over: Miss.River,TRRA,Front,8t

East St. Louis, St. Clair, IL

Built 1950 ADT: 975

MLK BR APPR EB & W

Over: RAMP TO WB MLK BR

0.1 Mi E 3rd ST EXIT, St. Clair, IL

Built 1961 ADT: 800

FAU 9172

Over: CSX RR AND CITY ST

CITY OF O'FALLON, St. Clair, IL

Built 1998 ADT: 50

SCCTD Metro BK Lin

Over: GREEN MOUNT FAU 9170

.68 M S of IL 161, St. Clair, IL

Built 2013 ADT: 15,600

SCCTD BIKE/PED TRA

Over: IL 161

NEAR SWIC/METRO BR, St. Clair, IL

Built 2014 ADT: 10,400

SCCTD METRO BIKE L

Over: FAU 9257 FULLERTON

.2 MI E of IL 161, St. Clair, IL

Built 2012 ADT: 6,850

TERMINAL R.R.

Over: 9TH ST FAU 9213

E. ST. LOUIS, St. Clair, IL

Built 1900 ADT: 2,450

RAILROAD

Over: FAU 9213 9TH ST

E. ST. LOUIS, St. Clair, IL

Built 1900 ADT: 2,450

A & S RR

Over: ST CLAIR AVE

.8 W ILL 111, St. Clair, IL

Built 1940 ADT: 5,900

ABANDONED ICG

Over: N BELT WEST/FAU 9257

.15 E ILL 13, St. Clair, IL

Built 1900 ADT: 13,900

CSX R.R.

Over: ILL 3

1 M NW I-55-70, St. Clair, IL

Built 1938 ADT: 4,300

CSX R.R.

Over: ILL 3

1 M NW I-55-70, St. Clair, IL

Built 1938 ADT: 4,300

CSX R.R

Over: ILL 3

.5 M NW I-55-70, St. Clair, IL

Built 1938 ADT: 4,300

I.C.& GULF R.R.

Over: FAS 848

NEW ATHENS, St. Clair, IL

Built 1928 ADT: 1,200

SOUTHERN RR

Over: 8TH ST/ FAU 9217B

E ST LOUIS, St. Clair, IL

Built 1936 ADT: 2,350

A & S RR

Over: 8TH ST/ FAU 9217

E ST LOUIS, St. Clair, IL

Built 1918 ADT: 2,350

IC RR

Over: 8TH ST/ FAU 9217B

1.3 M S ILL 15, St. Clair, IL

Built 1937 ADT: 2,350

TRRA R.R.

Over: STATE ST/ FAU 9182

E.ST.LOUIS, St. Clair, IL

Built 1900 ADT: 6,500

A & S RR

Over: 19TH ST/ FAU 9225

E ST LOUIS, St. Clair, IL

Built 1900 ADT: 2,000

RAILROAD

Over: SCHOOL ST/ FAU 9209

EAST CARONDELET, St. Clair, IL

Built 1900 ADT: 1,050

B&O RR

Over: CH 99

1/2 MI. E. OF O'FALL, St. Clair, IL

Built 1900 ADT: 1,650

FAU 9187A & MET LI

Over: MISS RIV/RR/MSS6000

E ST LOUIS, St. Clair, IL

Built 1874 ADT: 700

TRRA&SOUTHERN R.R.

Over: BROADWAY/ FAU 9187A

E.ST.LOUIS, St. Clair, IL

Built 1900 ADT: 9,600

TRRA R.R.

Over: TRENDLEY/ FAU 9187A

E.ST.LOUIS, St. Clair, IL

Built 1900 ADT: 9,600

METROLINK

Over: IL 161

.48MI EAST FAU 9170, St. Clair, IL

Built 2004 ADT: 10,400

METRO LINK

Over: LLEWELYN ROAD

N OF IL 161, St. Clair, IL

Built 1999 ADT: 325

METRO LINK

Over: DUTCH HOLLOW RD

NEAR IL 161, St. Clair, IL

Built 1999 ADT: 625

METRO LINK

Over: ST. CLAIR AVE

.03MI EAST OF 11TH, St. Clair, IL

Built 1999 ADT: 4,500

METRO LINK

Over: 79TH ST

0.01 S OF ST. CLAIR, St. Clair, IL

Built 1999 ADT: 2,850

METRO LINK

Over: FAI 64&BAUGH AVE

1-64/BAUGH AVE, St. Clair, IL

Built 1999 ADT: 1,025

IC RR

Over: ILL 13/ FAU 9251

0.35 M S ILL 157, St. Clair, IL

Built 1930 ADT: 3,250

METRO LINK

Over: IL 159

IN SWANSEA, St. Clair, IL

Built 1999 ADT: 12,000

METRO LINK

Over: E. MAIN ST.

WEST OF IL 161, St. Clair, IL

Built 1999 ADT: 1,400

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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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.