Johnson County, IL

120 public highway bridges

Johnson County Bridge Snapshot

Johnson County, Illinois contains 120 public highway bridges in the FHWA National Bridge Inventory. Roughly 55.8% are rated “Good,” 23.3% “Fair,” 2.5% “Poor,” and 2.5% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in IL are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

120

Total Bridges

55.8%

Good

2.5%

Poor

2.5%

Structurally Deficient

Condition Distribution

Good

55.8% (67)

Fair

23.3% (28)

Poor

2.5% (3)

SD

2.5% (3)

All Bridges (120)

Sort:

FAS 1931

Over: INTERSTATE 57

2.7 MI W GOREVILLE, Johnson, IL

Built 1959 ADT: 16,000

I 24 EB

Over: TR 42 & L SALINE R

1.7 MI SE I-57, Johnson, IL

Built 1972 ADT: 75

I 24 WB

Over: TR 42 & L SALINE R

1.7 MI SE I-57, Johnson, IL

Built 1972 ADT: 75

ILL 37

Over: INTERSTATE 24

1.5 MI N GOREVILLE, Johnson, IL

Built 1972 ADT: 22,300

UPRR

Over: INTERSTATE 24

AT ILL 37 ON I-24, Johnson, IL

Built 1972 ADT: 22,300

TR 15 EAGLE PT BAY

Over: INTERSTATE 24

0.5 MI E OF ILL. 37, Johnson, IL

Built 1972 ADT: 22,300

TR 82 DEER RIDGE R

Over: INTERSTATE 24

2.5 MI E OF ILL 37, Johnson, IL

Built 1972 ADT: 22,300

FAS 927 TUNNEL HIL

Over: INTERSTATE 24

GOREVILLE INTERCH., Johnson, IL

Built 1971 ADT: 22,100

TR 96 DUTCHMAN LAK

Over: INTERSTATE 24

6.5 MI S.E. OF ILL37, Johnson, IL

Built 1972 ADT: 22,100

I 24 EB

Over: TR 77 BOWMAN BOTTOMS

3.1 MI NW US 45, Johnson, IL

Built 1971 ADT: 50

I 24 WB

Over: TR 77 BOWMAN BOTTOMS

3.1 MI NW US 45, Johnson, IL

Built 1971 ADT: 50

I 24 WB

Over: US 45

1.5 MI N OF VIENNA, Johnson, IL

Built 1971 ADT: 2,550

I 24 EB

Over: US 45

1.5 MI N OF VIENNA, Johnson, IL

Built 1971 ADT: 2,550

I 24 EB

Over: TR 102 OLD BLOOMF'LD

1.2 MI N ILL 146, Johnson, IL

Built 1971 ADT: 50

I 24 WB

Over: TR 102 OLD BLOOMF'LD

1.2 MI N ILL 146, Johnson, IL

Built 1971 ADT: 50

I 24 EB

Over: ILL 146

1 MI E OF VIENNA, Johnson, IL

Built 1971 ADT: 5,000

I 24 WB

Over: ILL 146

1 MI E OF VIENNA, Johnson, IL

Built 1971 ADT: 5,000

I 24 EB

Over: TR 173 BETHLEHEM CH

7 MI S E OF VIENNA, Johnson, IL

Built 1971 ADT: 25

I 24 WB

Over: TR 173 BETHLEHEM CH

7 MI S E OF VIENNA, Johnson, IL

Built 1971 ADT: 25

TR 140 CENTRAL HIL

Over: INTERSTATE 24

9 MI S E OF VIENNA, Johnson, IL

Built 1970 ADT: 21,200

C.&E.I. R.R.

Over: ILL. 146

WEST VIENNA, Johnson, IL

Built 1900 ADT: 3,100

C.&E.I. R.R.

Over: FAS 927

SO OF GOREVILLE, Johnson, IL

Built 1900 ADT: 2,050

SIDE STREET

Over: UNION PACIFIC RR

GOREVILLE E.ILL 37, Johnson, IL

Built 1900 Load: 13.0 t ADT: 25

US 45

Over: STREAM

1 MI.S.NEW BURNSIDE, Johnson, IL

Built 1922 Load: 17.2 t ADT: 1,750

ILL 146

Over: TRIB OF BUCK RUN

1.9M E.UNION CO., Johnson, IL

Built 1930 Load: 17.8 t ADT: 2,250

FAS 928

Over: CACHE RIVER

NW1/4 SEC 6 T14S,R3E, Johnson, IL

Built 1948 Load: 21.1 t ADT: 550

FAS 924

Over: LICK CREEK

NW1/4 SEC 9 T12S,R2E, Johnson, IL

Built 1962 Load: 26.2 t ADT: 175

FAS 932 - ILL 147

Over: MAX CR

2.4 MI W OF SIMPSON, Johnson, IL

Built 1987 Load: 29.2 t ADT: 650

US 45

Over: STREAM

N OF BLOOMFIELD, Johnson, IL

Built 1953 Load: 30.5 t ADT: 2,150

FAS 924

Over: LICK CREEK OVERFLOW

NE1/4 SEC 8 T12S,R2E, Johnson, IL

Built 1962 Load: 32.4 t ADT: 175

FAS 924

Over: LICK CR

E 1/2 SEC 6 T12S R2E, Johnson, IL

Built 1974 Load: 32.4 t ADT: 375

TR 164

Over: CEDAR CREEK

NW1/4 SEC10 T12S,R4E, Johnson, IL

Built 1983 Load: 32.4 t ADT: 100

FAS 927

Over: TRIB TO CEDAR CREEK

0.5 MI NW OF SIMPSON, Johnson, IL

Built 1990 Load: 32.4 t ADT: 450

TR 111

Over: TRIB TO LITTLE CACHE

1 MI N VIENNA, Johnson, IL

Built 1993 Load: 32.4 t ADT: 225

TR 67

Over: DUTCHMAN CREEK

NW1/4 SEC36 T11S,R2E, Johnson, IL

Built 2003 Load: 32.4 t ADT: 75

TR 35

Over: CLIFTY CREEK

2 MI E NEW BURNSIDE, Johnson, IL

Built 1997 Load: 32.4 t ADT: 10

ILL 37

Over: BEAR BRANCH

0.45M N OF CYPRESS, Johnson, IL

Built 1933 Load: 33.0 t ADT: 1,350

US 45

Over: STREAM

S OF WILLIAMSON CO, Johnson, IL

Built 1956 Load: 34.7 t ADT: 1,450

ILL 37

Over: ABANDONED RR

0.2 MI S CYPRESS, Johnson, IL

Built 1934 Load: 36.0 t ADT: 1,200

ILL 37

Over: CACHE RIVER

.5 MI S. OF W VIENNA, Johnson, IL

Built 1931 Load: 36.9 t ADT: 1,350

US 45

Over: CAVE CREEK

1.7 MI N MASSAC CO, Johnson, IL

Built 1920 Load: 38.6 t ADT: 2,000

ILL 146

Over: CACHE RIVER

1 MI W OF W VIENNA, Johnson, IL

Built 1930 Load: 38.6 t ADT: 2,250

ILL 147

Over: BAY CREEK

0.2 MI W POPE CO L., Johnson, IL

Built 1936 Load: 40.2 t ADT: 400

US 45

Over: MCCORKLE CREEK

0.3 MI S OF ILL 146, Johnson, IL

Built 1924 Load: 43.7 t ADT: 2,000

ILL 146

Over: BELL POND CREEK

0.5 MI E GRANTSBURG, Johnson, IL

Built 1931 Load: 46.0 t ADT: 900

I 24 WB

Over: TUNNEL HILL STATE TR

1 MI N OF ILL 146, Johnson, IL

Built 1971 Load: 51.8 t ADT: 10,650

I 24 EB

Over: TUNNEL HILL STATE TR

1 MI N OF ILL 146, Johnson, IL

Built 1971 Load: 51.8 t ADT: 10,650

IL 146-FAP 885

Over: CN/IC RAILROAD

0.3 MI W POPE CO, Johnson, IL

Built 2002 Load: 52.5 t ADT: 900

I 24

Over: DRY FORK CREEK

1.88M E OF ILL 37, Johnson, IL

Built 1976 Load: 89.1 t ADT: 22,300

US 45

Over: STREAM

2.3 MI S VIENNA, Johnson, IL

Built 1972 Load: 97.2 t ADT: 2,000

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026