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)

CH 4

Good

Over: BEAR CREEK

2 MILES E HERRIN, Williamson, IL

Built 1983 Load: 32.4 t ADT: 2,150

TR 548B

Good

Over: CRAB ORCHARD CREEK

SE EDGE OF PITTSBURG, Williamson, IL

Built 1983 Load: 32.4 t ADT: 125

TR-167

Good

Over: Brushy Creek

5 MILE E PITTSBURG, Williamson, IL

Built 1983 Load: 32.4 t ADT: 75

TR 143

Good

Over: LAKE CREEK

1 MI N OF PITTSBURG, Williamson, IL

Built 1987 Load: 32.4 t ADT: 75

TR 612

Good

Over: BRUSHY CREEK

5 MI.EAST PITTSBURG, Williamson, IL

Built 1985 Load: 32.4 t ADT: 50

TR 202

Good

Over: NAMELESS-STREAM

3.5 MI WEST MARION, Williamson, IL

Built 1984 Load: 32.4 t ADT: 50

FAS 2903-CH 4

Good

Over: UNNAMED STREAM

1 MI. EAST OF HERRIN, Williamson, IL

Built 1987 Load: 32.4 t ADT: 2,050

TR 23

Good

Over: LAKE CREEK

2 MILES NEHERRIN, Williamson, IL

Built 1985 Load: 32.4 t ADT: 275

TR-606

Good

Over: Brushy Creek

4 MILES SE CORINTH, Williamson, IL

Built 1985 Load: 32.4 t ADT: 125

FAS 876

Good

Over: POND CREEK

0.5M SW FREEMAN SPUR, Williamson, IL

Built 1989 Load: 32.4 t ADT: 1,900

TR 604

Good

Over: PRAIRIE CREEK

2 MI E CORINTH, Williamson, IL

Built 1992 Load: 32.4 t ADT: 50

FAS 903-CH 2

Good

Over: PRAIRIE CREEK

4 MI E OF CORINTH, Williamson, IL

Built 1991 Load: 32.4 t ADT: 400

TWP ROAD 652

Good

Over: SUGAR CREEK

3 MI NE CREAL SPRING, Williamson, IL

Built 1989 Load: 32.4 t ADT: 75

TR 605

Good

Over: CANA CREEK

0.5 M NW CREALSPGS, Williamson, IL

Built 1990 Load: 32.4 t ADT: 100

TR 315

Good

Over: BRIAR CREEK

5M SE CRAB ORCHARD, Williamson, IL

Built 1991 Load: 32.4 t ADT: 150

FAS 1900-CH 25

Good

Over: CANEY BRANCH

7 MI S CARTERVILLE, Williamson, IL

Built 1991 Load: 32.4 t ADT: 1,950

TR 610

Good

Over: BRUSHY CREEK

3 MI SE CORINTH, Williamson, IL

Built 1992 Load: 32.4 t ADT: 10

TR 432

Good

Over: S FORK SALINE RIVER

4 MI SE MARION, Williamson, IL

Built 1992 Load: 32.4 t ADT: 125

TR 245

Good

Over: ICGRR

.05 MI W SALINE CO, Williamson, IL

Built 1995 Load: 32.4 t ADT: 175

TR 43-CHITTYVILLE

Good

Over: POND CREEK TRIBUTARY

1 MI NE OF HERRIN, Williamson, IL

Built 1996 Load: 32.4 t ADT: 375

TR 35-THORN ROAD

Good

Over: POND CREEK

1.5 MI N OF CORINTH, Williamson, IL

Built 1997 Load: 32.4 t ADT: 50

TR 5-HARMONY CH RO

Good

Over: UNNAMED STREAM

3 MI NE JOHNSTON CTY, Williamson, IL

Built 1997 Load: 32.4 t ADT: 600

TR 29-DEAN ROAD

Good

Over: POND CREEK TRIB

3 MI NE JHNSTON CITY, Williamson, IL

Built 1998 Load: 32.4 t ADT: 150

TR 606-SOMERS CH R

Good

Over: UNNAMED STREAM

8 MI NE PITTSBURG, Williamson, IL

Built 1998 Load: 32.4 t ADT: 125

TR 428

Good

Over: S FORK SALINE RIVER

3MI SE OF MARION, Williamson, IL

Built 2000 Load: 32.4 t ADT: 25

TR 509

Good

Over: WOLF CREEK

5 MI S OF MARION, Williamson, IL

Built 2000 Load: 32.4 t ADT: 10

TR 664

Good

Over: TRIB TO GRASSSY CRK

1.2MI W OF STONEFORT, Williamson, IL

Built 2000 Load: 32.4 t ADT: 25

TR 269 E

Good

Over: TRIB TO WOLF CREEK

6 MI S OF MARION, Williamson, IL

Built 2001 Load: 32.4 t ADT: 100

ROCKY COMFORT RD

Good

Over: TRIB TO GRASSY LAKE

9MI S OF CARTERVILLE, Williamson, IL

Built 2002 Load: 32.4 t ADT: 350

TR 644

Good

Over: BRIAR CREEK

4 MI N OF STONEFORT, Williamson, IL

Built 2003 Load: 32.4 t ADT: 50

HARMONY CHURCH RD

Good

Over: TRIB TO POND CREEK

0.125 E. IL 37, Williamson, IL

Built 2003 Load: 32.4 t ADT: 800

TR 233

Good

Over: CRAB ORCHARD CREEK

1.5MI E IF PITTSBURG, Williamson, IL

Built 2003 Load: 32.4 t ADT: 275

TR 542

Good

Over: CRAB ORCHARD CREEK

1.2MI E OF PITTSBURG, Williamson, IL

Built 2003 Load: 32.4 t ADT: 200

TR 505 A

Good

Over: GRASSY CREEK

5 MI W PULLEYS MILL, Williamson, IL

Built 2005 Load: 32.4 t ADT: 175

PARTRIDGE RD

Good

Over: I.C.G. R.R.

1 MI. W. SALINE CO., Williamson, IL

Built 2008 Load: 32.4 t ADT: 50

NORTH BEND ROAD

Good

Over: HURRICANE CREEK

2 MI E OF HURST, Williamson, IL

Built 2006 Load: 32.4 t ADT: 100

TR 95

Good

Over: LITTLE HURRICANE CR

0.5 MI NORTH OF COLP, Williamson, IL

Built 2005 Load: 32.4 t ADT: 25

TR 268

Good

Over: WOLF CREEK

3 MI NW PULLEYS MILL, Williamson, IL

Built 2008 Load: 32.4 t ADT: 50

EWING ROAD

Good

Over: TURNER CREEK

3 M S. CRAB ORCHARD, Williamson, IL

Built 2011 Load: 32.4 t ADT: 125

SYCAMORE RD

Good

Over: CAMBRIA CREEK

1.5 MI W CAMBRIA, Williamson, IL

Built 2010 Load: 32.4 t ADT: 1,050

TR 603

Good

Over: BRUSHY CREEK

1 MI E CREAL SPRINGS, Williamson, IL

Built 2012 Load: 32.4 t ADT: 175

TR 538

Good

Over: LITTLE CRAB ORCHARD

1 MI W CRAB ORCHARD, Williamson, IL

Built 2012 Load: 32.4 t ADT: 250

TR 632

Good

Over: ROCK CREEK

3 MI E CRAB ORCHARD, Williamson, IL

Built 1976 Load: 32.4 t ADT: 325

VICKSBURG STREET

Good

Over: DRAINAGE DITCH

3 BLKS NORTH MAIN ST, Williamson, IL

Built 1979 Load: 32.4 t ADT: 400

COLLEGE & GRANITE

Good

Over: WEST END CREEK

MARION, Williamson, IL

Built 1989 Load: 32.4 t ADT: 800

BOYTON ST-FAU 9631

Good

Over: WEST END CREEK

MARION, Williamson, IL

Built 1997 Load: 32.4 t ADT: 5,000

MITCHELL ST

Good

Over: WEST END CREEK

MARION, Williamson, IL

Built 1997 Load: 32.4 t ADT: 75

LIBERTY STREET

Good

Over: WEST END CREEK

MARION, Williamson, IL

Built 1997 Load: 32.4 t ADT: 125

MONROE STREET

Good

Over: WEST END CREEK

MARION, Williamson, IL

Built 1997 Load: 32.4 t ADT: 150

HOLLAND AVENUE

Good

Over: WEST END CREEK

MARION, Williamson, IL

Built 1997 Load: 32.4 t ADT: 175

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