Williamson County, IL

204 public highway bridges

Williamson County Bridge Snapshot

Williamson County, Illinois contains 204 public highway bridges in the FHWA National Bridge Inventory. Roughly 61.8% are rated “Good,” 24% “Fair,” 1.5% “Poor,” and 1.5% 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.

204
Total Bridges
61.8%
Good
1.5%
Poor
1.5%
Structurally Deficient

Condition Distribution

Good
61.8% (126)
Fair
24% (49)
Poor
1.5% (3)
SD
1.5% (3)

All Bridges (204)

FAS 907 (CH 9)(UNM

Fair

Over: BIG MUDDY RIVER

1 MI S OF HURST, Williamson, IL

Built 1937 Load: 33.7 t ADT: 5,550

NEW IL 13 EB

Fair

Over: BANKSTON FORK

1.7 MI W SALINE CO, Williamson, IL

Built 1994 Load: 35.0 t ADT: 9,000

ILL 13 WB

Fair

Over: CRAB ORCHARD LAKE

1.6 MI E JACKSON CO, Williamson, IL

Built 1939 Load: 35.3 t ADT: 23,500

CH 1

Fair

Over: LAKE CREEKOVERFLOW

SW CORP LIM J CITY, Williamson, IL

Built 1979 Load: 35.3 t ADT: 600

ILL 148

Fair

Over: POND CREEK

1.1 MI S FRANKLIN CO, Williamson, IL

Built 1931 Load: 35.6 t ADT: 3,650

ILL 13 WB

Fair

Over: CRAB ORCHARD LAKE

1.1 MI E JACKSON CO, Williamson, IL

Built 1939 Load: 36.6 t ADT: 25,600

NEW ILL RTE 13

Fair

Over: L CRAB ORCHARD CR

CRAB ORCHARD, Williamson, IL

Built 1990 Load: 37.3 t ADT: 12,100

ILL 13

Fair

Over: DRAINAGE DITCH

0.1 M E OF ILL 166, Williamson, IL

Built 1962 Load: 37.9 t ADT: 12,100

ILL 37

Fair

Over: CRAB ORCHARD CREEK

SCL MARION, Williamson, IL

Built 1997 Load: 38.6 t ADT: 5,500

FAS 904

Fair

Over: LITTLE CRAB ORCHARD

2.06 MI SO PITTSBURG, Williamson, IL

Built 1972 Load: 39.9 t ADT: 2,950

TR 140

Fair

Over: HURRICANE CREEK

0.5 MILE N OF COLP, Williamson, IL

Built 1981 Load: 40.5 t ADT: 150

ILL 166

Fair

Over: SUGAR CREEK

AT ECL CREAL SPRINGS, Williamson, IL

Built 1933 Load: 42.4 t ADT: 1,400

I 57 NB

Fair

Over: CRAB ORCHARD CREEK

2 MI S OLD IL 13, Williamson, IL

Built 2006 Load: 45.7 t ADT: 17,350

I 57 SB

Fair

Over: CRAB ORCHARD CREEK

2 MI S OLD IL 13, Williamson, IL

Built 2006 Load: 45.7 t ADT: 17,350

FAS 1901

Fair

Over: CRAB ORCHARD SPILWAY

4 MI.SW CARTERVILLE, Williamson, IL

Built 1976 Load: 46.3 t ADT: 1,300

EB IL 13

Fair

Over: BNSF RR

1.3 MILES WEST I-57, Williamson, IL

Built 2014 Load: 46.7 t ADT: 26,300

SBI 13 (UNMARKED)

Fair

Over: PIGEON CREEK

1.1 MI W OF ILL 148, Williamson, IL

Built 1920 Load: 47.0 t ADT: 1,550

IL 148-FAP 726

Fair

Over: LITTLE WOLF CREEK

3.3 MI N OF I-57, Williamson, IL

Built 1958 Load: 48.6 t ADT: 6,150

I 57 NB

Fair

Over: LAKE CREEK BRANCH

4 MI N OF IL 13, Williamson, IL

Built 1961 Load: 53.1 t ADT: 20,650

I 57 SB

Fair

Over: LAKE CREEK BRANCH

4 MI N OF MARION, Williamson, IL

Built 1961 Load: 53.1 t ADT: 20,650

I 57 NB

Fair

Over: PROGRESSIVE RAIL

IN MARION, Williamson, IL

Built 2009 Load: 57.3 t ADT: 15,400

I 57 SB

Fair

Over: PROGRESSIVE RAIL

IN MARION, Williamson, IL

Built 2009 Load: 59.0 t ADT: 15,400

I 57 SB

Fair

Over: LAKE CREEK

0.3 MI S JOHNSTON C, Williamson, IL

Built 2005 Load: 67.7 t ADT: 20,650

I 57 NB

Fair

Over: LAKE CREEK

0.3 MI S JOHNSTON C, Williamson, IL

Built 2005 Load: 68.0 t ADT: 20,650

TR 632

Fair

Over: BANSTON CREEK

2 MI E CRAB ORCHARD, Williamson, IL

Built 1900 Load: 88.8 t ADT: 325

TR 544

Good

Over: POND CREEK

2.5 MI NW CORINTH, Williamson, IL

Built 1977 ADT: 200

FAS 1900

Good

Over: WOLF CREEK

4 MI NW PULLEYS MILL, Williamson, IL

Built 1942 Load: 16.2 t ADT: 1,000

FAS 1887

Good

Over: SUGAR CREEK BRANCH

7 MI S CRAB ORCHARD, Williamson, IL

Built 1953 Load: 17.5 t ADT: 300

TR 551

Good

Over: BNRR

0.6M W OF ILL 37, Williamson, IL

Built 1900 Load: 19.1 t ADT: 25

FAUS 9629 & 9637

Good

Over: WEST END CREEK

W MAIN & COURT, Williamson, IL

Built 1997 Load: 24.3 t ADT: 19,100

FAS 904

Good

Over: CREEK

2.3 MI SO PITTSBURG, Williamson, IL

Built 1972 Load: 27.9 t ADT: 2,950

TR 566

Good

Over: BUCKLEY CK.

1.25 MI SW PITTSBURG, Williamson, IL

Built 1974 Load: 28.2 t ADT: 450

ILL 148

Good

Over: CRAB ORCHARD LAKE

2.8 MI S OF ILL 13, Williamson, IL

Built 1938 Load: 29.2 t ADT: 6,150

TR 276

Good

Over: CLIFTYCR-LK OF EGYPT

2 MI E PULLEYS MILL, Williamson, IL

Built 1962 Load: 29.5 t ADT: 950

CH 13

Good

Over: S FORK SALINE RIVER

5 MI SOUTH MARION, Williamson, IL

Built 1968 Load: 30.8 t ADT: 1,600

ILL 13

Good

Over: STREAM

0.8 MI W OF FAI 57, Williamson, IL

Built 1959 Load: 32.4 t ADT: 26,300

FAU 9629

Good

Over: STREAM

W URBAN LIM-MARION, Williamson, IL

Built 1993 Load: 32.4 t ADT: 6,500

FAU 9629

Good

Over: STREAM

0.25 MI W BNRR OVH, Williamson, IL

Built 1993 Load: 32.4 t ADT: 7,900

FAU 9629

Good

Over: STREAM

0.6 MI W FAI 57, Williamson, IL

Built 1993 Load: 32.4 t ADT: 7,900

FAS 2887-IL 37

Good

Over: LAKE CREEK OVERFLOW

0.3MI S JHNSTON CITY, Williamson, IL

Built 2002 Load: 32.4 t ADT: 8,000

FAS 2887 (IL 37)

Good

Over: TRIB TO LAKE CR

0.11 M N STOTLAR RD, Williamson, IL

Built 2002 Load: 32.4 t ADT: 8,000

FAS 2887 (IL 37)

Good

Over: TRIB TO LAKE CREEK

0.06 M N STOTLAR RD, Williamson, IL

Built 2002 Load: 32.4 t ADT: 8,000

TR 505

Good

Over: WOLF CREEK

1.5 MI NW PULLEYS M., Williamson, IL

Built 1977 Load: 32.4 t ADT: 175

TR 505

Good

Over: MIDDLE WOLF CREEK

2 MI NW PULLEYS MILL, Williamson, IL

Built 1977 Load: 32.4 t ADT: 175

TR 603

Good

Over: SUGAR CREEK

1 MI E CREAL SPRINGS, Williamson, IL

Built 1977 Load: 32.4 t ADT: 125

TR 440

Good

Over: S FORK SALINE RIVER

4 MI SE OF MARION, Williamson, IL

Built 1978 Load: 32.4 t ADT: 125

TR 606

Good

Over: PRAIRIE CREEK

4 MI SE CORINTH, Williamson, IL

Built 1978 Load: 32.4 t ADT: 125

CH 14

Good

Over: LAKE CREEK

.2 MI E JOHNSTON CIT, Williamson, IL

Built 1980 Load: 32.4 t ADT: 450

TR-4

Good

Over: Stream

SALINE COUNTY LINE, Williamson, IL

Built 1982 Load: 32.4 t ADT: 100

TR-573

Good

Over: Cana Creek

2.5 MILES NW CREAL, Williamson, IL

Built 1981 Load: 32.4 t ADT: 200

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