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)

OLD US 50

Fair

Over: ROCK SPRING BROOK

EAST O'FALLON, St. Clair, IL

Built 1952 Load: 35.3 t ADT: 8,600

I-55/70 & US 40 WB

Fair

Over: DRAINAGE CANAL

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

Built 1960 Load: 35.6 t ADT: 33,650

I-64 EB

Fair

Over: TRRA

0.3mi W of 25th St., St. Clair, IL

Built 1968 Load: 35.6 t ADT: 37,900

I-64 WB

Fair

Over: TRRA

0.3mi W of 25th St., St. Clair, IL

Built 1968 Load: 35.6 t ADT: 37,900

FAI 255

Fair

Over: P.DUPONT&BLUE WATERS

.50 M SW OF ILL 157, St. Clair, IL

Built 1981 Load: 36.6 t ADT: 31,400

ILL 177

Fair

Over: LOOP CREEK

3.9 MI W JNC ILL 4, St. Clair, IL

Built 1990 Load: 36.6 t ADT: 7,150

BALDWIN RD/ FAS 84

Fair

Over: DOZA CREEK

4.26 MI S ILL RTE 13, St. Clair, IL

Built 1971 Load: 36.6 t ADT: 1,300

FAI 64 EB

Fair

Over: SILVER CREEK

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

Built 1971 Load: 36.9 t ADT: 20,950

SKAER RD/ TR 126

Fair

Over: WEST FORK CREEK

2.2 MI S C.H. 21, St. Clair, IL

Built 1969 Load: 36.9 t ADT: 25

STATE ST/ FAU 9182

Fair

Over: HARDING DITCH

.5 M.S FAU9166/US50, St. Clair, IL

Built 1981 Load: 38.9 t ADT: 5,950

SUMMERFIELD CH 50

Fair

Over: RHEINHARDT SLOUGH

1.3MI N ILL RTE 177, St. Clair, IL

Built 1943 Load: 39.5 t ADT: 250

ILL 163

Fair

Over: HARDING DITCH

50 FT E ILL 157, St. Clair, IL

Built 1975 Load: 40.2 t ADT: 3,350

ILL 163

Fair

Over: CANAL NO 1LEVEE DIST

0.17 MI SE ILL 157, St. Clair, IL

Built 1975 Load: 41.5 t ADT: 3,350

I-255 RAMP E

Fair

Over: BLUE WATERS DITCH

0.50 MI S DORIS AVE, St. Clair, IL

Built 1980 Load: 41.5 t ADT: 2,800

ILL 4 & 15

Fair

Over: KASKASKIA OVERFLOW

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

Built 1946 Load: 43.4 t ADT: 3,600

I-64 WB

Fair

Over: A&SRR

0.67 mi E of IL 111, St. Clair, IL

Built 1968 Load: 43.4 t ADT: 38,350

I-55/64 EB CD Q-LI

Fair

Over: GROUND

PIER D26 TO PIER P14, St. Clair, IL

Built 1969 Load: 43.7 t ADT: 18,100

GREEN MT RD-FAU 91

Fair

Over: LOOP CREEK

0.20M N OF IL 177, St. Clair, IL

Built 1967 Load: 44.1 t ADT: 15,600

I-64 EB

Fair

Over: A&SRR

0.67 mi E of IL 111, St. Clair, IL

Built 1968 Load: 44.1 t ADT: 36,600

FAI 255 NB

Fair

Over: HARDING DITCH south

0.5 MI N ST CLAIR AV, St. Clair, IL

Built 1982 Load: 44.7 t ADT: 22,300

IL 15

Fair

Over: NSRR, ICRR

.70MI E JCT IL 157, St. Clair, IL

Built 1940 Load: 46.7 t ADT: 28,700

I 255 NB RMP 1609

Fair

Over: CANTEEN CREEK

.50 S MADISON CO LIN, St. Clair, IL

Built 1983 Load: 48.6 t ADT: 1,850

ILL 13 & 15 WB

Fair

Over: TRIB TO RICHLAND CRK

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

Built 1955 Load: 49.6 t ADT: 12,600

ILL 13 & 15 EB

Fair

Over: TRIB TO RICHLAND CRK

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

Built 1955 Load: 49.6 t ADT: 12,600

ILL 3

Fair

Over: CAHOKIA CANAL

0.3 M N NATIONAL CTY, St. Clair, IL

Built 1935 Load: 49.6 t ADT: 4,600

W. WINTERS STREET

Fair

Over: ASH CREEK

700' WEST OF WARD DRIVE, St. Clair, IL

Built 1980 Load: 49.9 t ADT: 8,500

FAI 255 NB

Fair

Over: HARDING DITCH north

1.9MI N FAI 64, St. Clair, IL

Built 1985 Load: 50.2 t ADT: 21,750

FAU 9172

Fair

Over: ENGLE CREEK BRANCH

2.20 MI N US 50, St. Clair, IL

Built 1963 Load: 50.9 t ADT: 4,400

LAKE DR/ FAU 9185

Fair

Over: CANAL #1 LEVEE DIST

.11 MI W IL 157, St. Clair, IL

Built 1978 Load: 51.5 t ADT: 3,700

N CO RD/ FAU 9380

Fair

Over: DRAINAGE DITCH

0.44 M N IL 177, St. Clair, IL

Built 1962 Load: 53.1 t ADT: 2,450

FAS 841

Fair

Over: WEST FORK CREEK

4.5MI S JCT ILL 158, St. Clair, IL

Built 1959 Load: 56.4 t ADT: 3,250

ST CLAIR AVE EB

Fair

Over: HARDING DITCH

1.5 M W ILL 157, St. Clair, IL

Built 1959 Load: 66.7 t ADT: 5,900

ILL 157

Fair

Over: Trib to Harding Dtch

0.08 S BUNKUM RD, St. Clair, IL

Built 1966 Load: 70.0 t ADT: 11,600

CRTIS-STNBRG/FAU92

Fair

Over: GOOSE LAKE Ditch

I/2 MI.W CH 19, St. Clair, IL

Built 1901 Load: 72.9 t ADT: 850

CONCORDIA CH RD/CH

Fair

Over: BRANCH PRARE DU PONT

2.3MI E ILL RTE 163, St. Clair, IL

Built 1967 Load: 87.2 t ADT: 800

CONCORDIA CH RD/CH

Fair

Over: PRAIRIE DU PONT CR

1.2MI E ILL RTE 163, St. Clair, IL

Built 1967 Load: 89.1 t ADT: 800

JACKS RUN RD/FAU93

Fair

Over: JACKS RUN

1.0MI E ILL RTE 13, St. Clair, IL

Built 1971 Load: 89.1 t ADT: 175

RICHTER TR 278

Fair

Over: BRANCH SILVER CREEK

0.25 MIN SBI 161, St. Clair, IL

Built 1982 Load: 89.1 t ADT: 10

RISDON SCHOOL TR 1

Good

Over: BRANCH DOZA CREEK

6 MI WEST OF MARISSA, St. Clair, IL

Built 1967 Load: 13.0 t ADT: 225

NORTH 2ND ST/FAU92

Good

Over: RICHLAND CREEK

BELLEVILLE, St. Clair, IL

Built 1956 Load: 15.2 t ADT: 750

MONROE ST/ FAU 927

Good

Over: RICHLAND CREEK

0.32M W ILL 159, St. Clair, IL

Built 1956 Load: 16.8 t ADT: 1,700

ILL 161

Good

Over: TRIB TO SILVER CREEK

0.1 MI E ILL 4, St. Clair, IL

Built 1933 Load: 21.4 t ADT: 6,650

TOWNSEND RD/ TR 5C

Good

Over: LITTLE SILVER CREEK

1 MI E ILL 4, St. Clair, IL

Built 1941 Load: 24.3 t ADT: 50

PROBST RD/ TR 126

Good

Over: BR. RICHLAND CREEK

0.25 MI N ILL 156, St. Clair, IL

Built 1901 Load: 24.3 t ADT: 25

NORTH THIRD STREET

Good

Over: RICHLAND CREEK

4 BLOCKS NW SQUARE, St. Clair, IL

Built 1948 Load: 24.3 t ADT: 875

W MAIN ST/ FAU 918

Good

Over: RICHLAND CREEK

0.50 W ILL 159, St. Clair, IL

Built 1948 Load: 24.3 t ADT: 6,100

N 6th St. - FAU 93

Good

Over: Drains to Silver Crk

0.6 Miles N IL 177, St. Clair, IL

Built 1962 Load: 25.6 t ADT: 1,200

FRANK SCOTT PKWY

Good

Over: TRIB RICHLAND CK

0.5 MI W CH 89, St. Clair, IL

Built 2001 Load: 25.6 t ADT: 16,200

US 50

Good

Over: LITTLE SILVER CREEK

AT E EDGE LEBANON, St. Clair, IL

Built 1965 Load: 28.5 t ADT: 9,450

MUNICIPAL ST. 6060

Good

Over: BR LITTLE SILVER CK

0.2 MI E CH50 SUMFLD, St. Clair, IL

Built 1981 Load: 29.2 t ADT: 150

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.