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)

ILL 157

Good

Over: CANTEEN CREEK

N C LMTS CASEYVILLE, St. Clair, IL

Built 1990 Load: 37.9 t ADT: 11,300

DAVIS ST/ FAU 9301

Good

Over: FISH LAKE

1.25MI W ILL RTE 3, St. Clair, IL

Built 1974 Load: 37.9 t ADT: 400

ILL 159

Good

Over: BR RICHLAND CREEK

under IL 15 bridges, St. Clair, IL

Built 1967 Load: 38.6 t ADT: 14,200

I-70 WB

Good

Over: KCSRR, CSXRR

QuadLevel 55/70WB to 70WB, St. Clair, IL

Built 2014 Load: 38.9 t ADT: 21,000

ILL 13

Good

Over: POWDER MILL CREEK

1 M E CENTREVILLE, St. Clair, IL

Built 1929 Load: 39.5 t ADT: 3,250

IL 4

Good

Over: MUD CREEK OVERFLOW

0.56 MI N MARISSA, St. Clair, IL

Built 1992 Load: 39.5 t ADT: 1,550

IL 4

Good

Over: N Trib to Silver Crk

N Leg of IL 4/IL 161, St. Clair, IL

Built 1995 Load: 39.5 t ADT: 7,800

ILL 13 / IL 157

Good

Over: HARDING DITCH

SE OF JCT IL 163&157, St. Clair, IL

Built 1973 Load: 39.9 t ADT: 6,000

ILL 161

Good

Over: TRIB TO LOOP CREEK

1.22 M W OF ILL 158, St. Clair, IL

Built 1933 Load: 39.9 t ADT: 14,400

BUNKUM RD/FAU 9160

Good

Over: HARDING DITCH

1 MI E IL 111, St. Clair, IL

Built 2008 Load: 40.5 t ADT: 1,500

IL 158

Good

Over: BR of Richland Creek

300 feet S of IL 15, St. Clair, IL

Built 2013 Load: 40.8 t ADT: 9,050

NORTH GREENMOUNT R

Good

Over: RICHLAND CREEK

1.5 MI N SHILOH RD, St. Clair, IL

Built 1987 Load: 40.8 t ADT: 19,200

ILL 159

Good

Over: RICHLAND CREEK

IN BELLEVILLE, St. Clair, IL

Built 1923 Load: 41.1 t ADT: 11,400

IL 161

Good

Over: Schoenberger Creek

300' NW DUTCH HOLLOW, St. Clair, IL

Built 1993 Load: 41.1 t ADT: 15,100

IL 159

Good

Over: Br of Canteen Creek

500' s of madison co, St. Clair, IL

Built 2012 Load: 41.1 t ADT: 16,100

IL 4

Good

Over: MUD CREEK

1.2 MI N JCT IL 13, St. Clair, IL

Built 1992 Load: 41.5 t ADT: 1,550

OLD IL 3 - FAU 929

Good

Over: HILL CREEK

1.1M S DUPO, St. Clair, IL

Built 1997 Load: 41.5 t ADT: 2,600

ILL 15 WB

Good

Over: RICHLAND CREEK

1.0 M E JCT ILL 159, St. Clair, IL

Built 1956 Load: 41.8 t ADT: 12,500

TR 120 Mulligan Ln

Good

Over: Br of Richland Cr

1.14 Mi W of IL 159, St. Clair, IL

Built 2020 Load: 41.8 t ADT: 125

Bond Ave

Good

Over: A&SRR

39TH & BOND ALORTON, St. Clair, IL

Built 1980 Load: 42.4 t ADT: 3,250

1L 15

Good

Over: SILVER CREEK

2.5 MI E FREEBURG, St. Clair, IL

Built 1993 Load: 42.4 t ADT: 2,600

IL 13 EB TO IL 15

Good

Over: TRIB TO RICHLAND CRK

1.6 M SE IL 158& 177, St. Clair, IL

Built 2006 Load: 42.4 t ADT: 450

Rel. IL 3 (Packers

Good

Over: KCSRR, Water St, UPRR

0.6 mi W. of I-70, St. Clair, IL

Built 2016 Load: 42.8 t ADT: 2,350

FAI 255 SB

Good

Over: HARDING DITCH north

1.9MI N FAI 64, St. Clair, IL

Built 1985 Load: 43.4 t ADT: 21,750

IL 177

Good

Over: LOOP CREEK

3MI WEST OF 158, St. Clair, IL

Built 2007 Load: 43.4 t ADT: 7,800

IL 13

Good

Over: E Trib to Doza Creek

0.9MI NW MARISSA, St. Clair, IL

Built 2014 Load: 44.1 t ADT: 3,350

FAU 9181 SUMMIT AV

Good

Over: HARDING DITCH

0.7 M E JCT ILL 111, St. Clair, IL

Built 1957 Load: 44.7 t ADT: 1,900

Rel. IL 3 (Packers

Good

Over: KCSRR, Water St, UPRR

0.6 mi W. of I-70, St. Clair, IL

Built 2016 Load: 45.7 t ADT: 2,350

IL 3

Good

Over: UPRR, Prarie duPont Cana

NORTH OF DUPO, St. Clair, IL

Built 2012 Load: 46.0 t ADT: 9,600

IL 161

Good

Over: Metrolink

0.1mi W of IL 159, St. Clair, IL

Built 1935 Load: 46.3 t ADT: 14,700

IL 161 NORTHBOUND

Good

Over: SCHOENBERGER CREEK

1MI SO. ST CLAIR AVE, St. Clair, IL

Built 2007 Load: 46.7 t ADT: 14,800

IL 161 SOUTHBOUND

Good

Over: SCHOENBERGER CREEK

IMI SO. ST CLAIR AVE, St. Clair, IL

Built 2007 Load: 46.7 t ADT: 14,800

FAI 255

Good

Over: HILL CREEK

1.5 MI S OF DUPO, St. Clair, IL

Built 1979 Load: 46.7 t ADT: 41,000

MSS 6035

Good

Over: HILL CREEK

1.5 M SO OF DUPO, St. Clair, IL

Built 1979 Load: 46.7 t ADT: 125

TR 194 Reinneck Rd

Good

Over: Hazel Creek

0.25 Mi N Jefferson, St. Clair, IL

Built 2018 Load: 47.3 t ADT: 225

FAI 255 NB

Good

Over: CANTEEN CREEK

0.1MI S MAD CO LINE, St. Clair, IL

Built 1984 Load: 48.0 t ADT: 21,750

IL 4

Good

Over: S1 Trib L Silver Crk

1.1 mi S of US 50, St. Clair, IL

Built 1998 Load: 48.0 t ADT: 6,050

TR-237 (Probst Roa

Good

Over: Trib to Richland Cr

0.5 Mi E. of Ill 159, St. Clair, IL

Built 2017 Load: 48.0 t ADT: 75

IL 157

Good

Over: CSXRR

Caseyville N C.L., St. Clair, IL

Built 1990 Load: 48.3 t ADT: 11,300

IL 159

Good

Over: CSXRR & Canteen Creek

Collinsville S C.L., St. Clair, IL

Built 1980 Load: 48.6 t ADT: 16,300

IL 177

Good

Over: LOOP CREEK

1 MI W. JCT W/158, St. Clair, IL

Built 2007 Load: 49.2 t ADT: 5,600

ILL 161

Good

Over: ASH CREEK

2.7MI W ILL 4, St. Clair, IL

Built 1932 Load: 49.6 t ADT: 5,900

IL 15 EB

Good

Over: ICRR

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

Built 2015 Load: 49.9 t ADT: 12,500

Lebanon Rd /FAU 91

Good

Over: SCHOENBERGER CREEK

0.1 M W ILL 161, St. Clair, IL

Built 1978 Load: 49.9 t ADT: 3,100

IL 15 WB

Good

Over: ICRR

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

Built 2015 Load: 50.2 t ADT: 12,500

IL 156

Good

Over: RICHLAND CREEK

1.2 MI E. JCT 159, St. Clair, IL

Built 2007 Load: 50.5 t ADT: 2,750

IL 163

Good

Over: S PRAIRIE duPONT CK

2MI N OF MILSTADT, St. Clair, IL

Built 2006 Load: 50.9 t ADT: 3,500

IL 4

Good

Over: LITTLE MUD CREEK

0.3 M SOUTH IL 15, St. Clair, IL

Built 1994 Load: 51.5 t ADT: 2,400

IL 4

Good

Over: LITTLE MUD CREEK

.8 M N JCT DRMSDT RD, St. Clair, IL

Built 2012 Load: 51.5 t ADT: 2,400

FAI 64

Good

Over: Brooms Run

0.63 E ILL 4, St. Clair, IL

Built 1972 Load: 52.5 t ADT: 34,900

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.