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)

BUSS BRANCH RD

Good

Over: GERHARDT CREEK

2.0MI SW PADERBORN, St. Clair, IL

Built 2000 Load: 32.4 t ADT: 375

ETLING ROAD

Good

Over: W. FORK RICHLAND CT.

1MI EAST OF CH 9, St. Clair, IL

Built 2001 Load: 32.4 t ADT: 350

TR 218

Good

Over: BRANCH SILVER CREEK

1 MI S IL. 15, St. Clair, IL

Built 2002 Load: 32.4 t ADT: 150

WASH CO LINE/TR 2

Good

Over: TRIB MUD CREEK

.5MI S LEHR RD, St. Clair, IL

Built 2002 Load: 32.4 t ADT: 300

SAEGER RD/TR 135

Good

Over: PRAIRIE DUPONT CREEK

0.9 MI NW OF RT 158, St. Clair, IL

Built 2004 Load: 32.4 t ADT: 350

OAK GROVE SCH. TR

Good

Over: BR LITTLE SILVER CR.

1 MI W CH 50, St. Clair, IL

Built 2003 Load: 32.4 t ADT: 325

PRESSS RD/TR 197

Good

Over: KINNEY BRANCH

2.5 MI E IL 159, St. Clair, IL

Built 2008 Load: 32.4 t ADT: 425

GRODEON RD/TR 151

Good

Over: HOG RIVER

1 MI W IL 4, St. Clair, IL

Built 2009 Load: 32.4 t ADT: 225

SHILOH STATION RD

Good

Over: BRANCH LOOP CREEK

1 MI N IL RTE 161, St. Clair, IL

Built 2006 Load: 32.4 t ADT: 700

BLACK QUARTER RD

Good

Over: DRY LANE SLOUGH

.5MI NE IL 13, St. Clair, IL

Built 2010 Load: 32.4 t ADT: 50

EMRALD MOUND TR 26

Good

Over: E BR LITTLE SILVER

1 MI N US 50, St. Clair, IL

Built 2009 Load: 32.4 t ADT: 100

PARK RD/TR 102

Good

Over: DOUGLAS CREEK

0.4 MI N SCHMIDT LN, St. Clair, IL

Built 2011 Load: 32.4 t ADT: 200

Press Rd/TR 197

Good

Over: Douglas Creek

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

Built 2012 Load: 32.4 t ADT: 375

TR 285 - Schmoll R

Good

Over: Branch of Doza Creek

1 Mi E of Baldwin Rd, St. Clair, IL

Built 2014 Load: 32.4 t ADT: 75

TR 223 Pensoneau R

Good

Over: Trib Little Mud Cr

0.2 Mi E of IL Rte 4, St. Clair, IL

Built 2015 Load: 32.4 t ADT: 150

STATE STREET

Good

Over: ALTON/SOUTH RR

.15 E OF 40TH ST, St. Clair, IL

Built 1999 Load: 32.4 t ADT: 5,400

LEBANON AVE FAU 92

Good

Over: METRO LINK

0.5 NE OF IL 159, St. Clair, IL

Built 1999 Load: 32.4 t ADT: 6,850

CLEVELAND AVENUE

Good

Over: RICHLAND CREEK

BELLEVILLE, St. Clair, IL

Built 2010 Load: 32.4 t ADT: 675

MS-7241 BicentPkDr

Good

Over: Creek

0.5 Mi S IL 13, St. Clair, IL

Built 2013 Load: 32.4 t ADT: 225

MS-6302 Dutch Hw R

Good

Over: Creek

0.1 Mi S Lebanon Rd, St. Clair, IL

Built 2016 Load: 32.4 t ADT: 475

North Long Street

Good

Over: Little Canteen Creek

E Sec 7 T2N R8W, St. Clair, IL

Built 2016 Load: 32.4 t ADT: 700

N. SMILEY ST

Good

Over: ENGLE CREEK

1.7MI N OLD US 50, St. Clair, IL

Built 1995 Load: 32.4 t ADT: 1,100

DEER CREEK ROAD

Good

Over: TRIB TO ENGLE CREEK

.4MI W 7 HILLS RD, St. Clair, IL

Built 2006 Load: 32.4 t ADT: 1,550

FAU 9331 VENITA DR

Good

Over: CSX RAILROAD

.16 MI N FAU 9166, St. Clair, IL

Built 2015 Load: 32.4 t ADT: 6,650

PLSNT RDG RD/FAU91

Good

Over: CREEK

1.2 MI N OF BUNKUM R, St. Clair, IL

Built 2009 Load: 32.4 t ADT: 550

North 10th Street

Good

Over: Drainage Ditch

Mascoutah, St. Clair, IL

Built 2015 Load: 32.4 t ADT: 725

PARK ACCESS ROAD

Good

Over: WHISPERING WILLOW LK

FRANK HOLTEN ST. PK., St. Clair, IL

Built 2004 Load: 32.4 t ADT: 350

WARD DRIVE

Good

Over: ASH CREEK

260' NORTH OF PAUL REVERE, St. Clair, IL

Built 1990 Load: 32.7 t ADT: 12,500

PRYOR DRIVE

Good

Over: TRIBUTARY SILVER CREEK

50' NORTH OF AIR GUARD WA, St. Clair, IL

Built 2010 Load: 32.7 t ADT: 2,500

IL 13

Good

Over: ICRR

2.5 S of Freeburg, St. Clair, IL

Built 1997 Load: 33.0 t ADT: 5,800

IL 3 NB

Good

Over: 2 future TRRA tracks

0.5mi SW I-70, St. Clair, IL

Built 2016 Load: 33.0 t ADT: 2,350

IL 3 SB

Good

Over: 2 future TRRA tracks

0.5 mi SW of I-70, St. Clair, IL

Built 2016 Load: 33.0 t ADT: 2,350

ILL 177

Good

Over: TRIB RAYHILLS SLOUGH

4.5M E OF IL 4, St. Clair, IL

Built 1994 Load: 33.0 t ADT: 2,000

ILL 177

Good

Over: ASH CREEK

0.7 MI E ILL 158, St. Clair, IL

Built 1991 Load: 33.4 t ADT: 7,150

ILL 177

Good

Over: E Trib Reinhardt SL

1.8M E JCT IL 4, St. Clair, IL

Built 1994 Load: 33.4 t ADT: 2,450

IL 159

Good

Over: Trib to Richland Crk

3.2 MI N SMITHON, St. Clair, IL

Built 2001 Load: 33.4 t ADT: 8,100

FAU 9175

Good

Over: ROCK SPRING BRANCH

0.5M N US 50, St. Clair, IL

Built 1972 Load: 33.4 t ADT: 11,400

STATE STREET RD

Good

Over: CREEK

BELV S 1.5M IL 15, St. Clair, IL

Built 1999 Load: 33.4 t ADT: 1,700

US 50

Good

Over: SILVER CREEK

1.5 M W ILL 4, St. Clair, IL

Built 1939 Load: 33.7 t ADT: 16,000

I-64WB, Ramp to 18

Good

Over: NSRR

0.4 mi W of 25th St., St. Clair, IL

Built 1974 Load: 34.0 t ADT: 37,900

ILL 161

Good

Over: RICHLAND CREEK

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

Built 1987 Load: 34.0 t ADT: 19,600

FAI 70A

Good

Over: MISSISSIPPI RIVER

RIVER CROSSING MAIN, St. Clair, IL

Built 2014 Load: 34.8 t ADT: 44,300

IL 13

Good

Over: TRIB TO KASKASKIA RV

2.2M N NEW ATHENS, St. Clair, IL

Built 1996 Load: 35.3 t ADT: 5,450

OLD LINCOLN TRAIL

Good

Over: HOLLOW CREEK

.1 MI E ILL 161, St. Clair, IL

Built 1977 Load: 36.0 t ADT: 2,600

IL 15 - FA 817

Good

Over: TRIB OF L MUD CREEK

0.5 NW OF ST. LIBORY, St. Clair, IL

Built 1990 Load: 36.0 t ADT: 3,450

Scott Drive NB

Good

Over: ASH CREEK

0.4 M N JCT ILL 161, St. Clair, IL

Built 1952 Load: 36.3 t ADT: 3,700

Scott Drive SB

Good

Over: ASH CREEK

0.4 M N JCT ILL 161, St. Clair, IL

Built 1952 Load: 36.3 t ADT: 3,700

FAI 64 WB

Good

Over: Abandoned Rdwy C

0.12 E OF 18TH ST, St. Clair, IL

Built 1968 Load: 36.6 t ADT: 37,900

IL 4

Good

Over: Trib to Silver Creek

1/2 mi south of I-64, St. Clair, IL

Built 1995 Load: 36.6 t ADT: 7,800

FAI 64 EB

Good

Over: Abandoned Roadway C

0.13 E OF 18TH ST, St. Clair, IL

Built 1974 Load: 36.9 t ADT: 37,900

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

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.