Monroe County, IL

130 public highway bridges

Monroe County Bridge Snapshot

Monroe County, Illinois contains 130 public highway bridges in the FHWA National Bridge Inventory. Roughly 57.7% are rated “Good,” 30% “Fair,” 6.9% “Poor,” and 6.9% 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.

130
Total Bridges
57.7%
Good
6.9%
Poor
6.9%
Structurally Deficient

Condition Distribution

Good
57.7% (75)
Fair
30% (39)
Poor
6.9% (9)
SD
6.9% (9)

All Bridges (130)

TR 28

Good

Over: LONG SLASH CREEK

4 MI SW COLUMBIA, Monroe, IL

Built 2010 Load: 32.4 t ADT: 125

TR 43 Merrimac Rd

Good

Over: Long Slash Creek

4 MI N of Valmeyer, Monroe, IL

Built 2012 Load: 32.4 t ADT: 50

TR 74 Gall Rd

Good

Over: Andy's Run

1 Mi W. Waterloo, Monroe, IL

Built 2013 Load: 32.4 t ADT: 200

TR 32 Long Lake Rd

Good

Over: Maeystown Creek Trib

2 Mi SW Fults, Monroe, IL

Built 2014 Load: 32.4 t ADT: 25

TR-74 (Gall Road)

Good

Over: Andy's Run Tributary

4 Mi NW of Waterloo, Monroe, IL

Built 2017 Load: 32.4 t ADT: 125

VALMYER RD/FAU 930

Good

Over: CARR CREEK

.3 MI W ILL 158, Monroe, IL

Built 1980 Load: 32.4 t ADT: 2,250

GERDERN DRIVE

Good

Over: PALMER CREEK

CITY OF COLUMBIA, Monroe, IL

Built 1995 Load: 32.4 t ADT: 400

ADMIRAL WEINEL BLV

Good

Over: WILSON CREEK

CITY OF COLUMBIA, Monroe, IL

Built 1998 Load: 32.4 t ADT: 750

FAU 9314

Good

Over: FOUNTAIN CREEK

WATERLOO, Monroe, IL

Built 2002 Load: 32.4 t ADT: 1,900

MSS 1324 STOCKEL L

Good

Over: TRIB TO FOUNTAIN CR

STOCKEL LN, Monroe, IL

Built 2004 Load: 32.4 t ADT: 475

RUECK ROAD

Good

Over: UN-NAMED CREEK

NE SEC9 T1 R10W, Monroe, IL

Built 2000 Load: 32.4 t ADT: 1,850

ADMIRAL TROST

Good

Over: WILSON CREEK

ADM TROST W IL 3, Monroe, IL

Built 2005 Load: 32.4 t ADT: 1,150

FAU 9315 Moore St.

Good

Over: Fountain Ck Trib

Waterloo, Monroe, IL

Built 2007 Load: 32.4 t ADT: 2,000

LEVEE RD TR 28

Good

Over: CARR CREEK

ROAD DIST NO.5, Monroe, IL

Built 1983 Load: 34.7 t ADT: 125

TR130 LL ROAD

Good

Over: HORSE CREEK

SEC 28 RD DIST 3, Monroe, IL

Built 1978 Load: 35.0 t ADT: 150

Ramp from IL 3 NB

Good

Over: PALMER CREEK

0.8 mi S of I-255, Monroe, IL

Built 1991 Load: 36.9 t ADT: 1,750

ILL 3

Good

Over: ROCKHOUSE CREEK

4 MI SE WATERLOO, Monroe, IL

Built 1995 Load: 39.9 t ADT: 6,950

TR 147 Faust Rd

Good

Over: Horse Ck

TR 147 1 mile N of Ames, Monroe, IL

Built 2022 Load: 42.1 t ADT: 125

Ramp to IL 3 SB

Good

Over: PALMER CRK Overflow

0.8 mi S of I-255, Monroe, IL

Built 1991 Load: 42.4 t ADT: 1,350

ADMIRAL TROST RD

Good

Over: WILSON CR. MSS 1296

CITY OF COLUMBIA, Monroe, IL

Built 2007 Load: 49.2 t ADT: 1,150

IL 3 Ramps F,B,E &

Good

Over: HILL LAKE CREEK

1.5 M N COLUMBIA, Monroe, IL

Built 1978 Load: 97.2 t ADT: 25,850

FAS-1858 (CH-12)

Poor

Over: Dennis Hollow

E CITY LIM VALMEYER, Monroe, IL

Built 1927 Load: 21.1 t ADT: 775

BLUFF RD/ FAS 1857

Poor

Over: FULTS CREEK

0.5 MI.SE OF FULTS, Monroe, IL

Built 1983 Load: 30.1 t ADT: 200

GALL RD/ FAU 9345

Poor

Over: CARR CREEK

COLUMBIA, Monroe, IL

Built 1978 Load: 33.4 t ADT: 725

TR 85 NIKE RD

Poor

Over: RICHLAND CREEK

1 MI E OF HECKER, Monroe, IL

Built 2001 Load: 38.2 t ADT: 425

CH 12

Structurally Deficient

Over: DRAINAGE CANAL

0.1 M W VALMEYER C L, Monroe, IL

Built 1935 ADT: 400

MAEYSTOWN MSS 1030

Structurally Deficient

Over: MAEYSTOWN CREEK

SW CL MAEYSTOWN, Monroe, IL

Built 1941 Load: 15.6 t ADT: 225

FAU 9300

Structurally Deficient

Over: CARR CREEK

0.1M S COLUMBIA, Monroe, IL

Built 1995 Load: 24.9 t ADT: 4,100

MS 6190 (CARL ST)

Structurally Deficient

Over: CREEK

200' SO. OF IL 3, Monroe, IL

Built 1972 Load: 24.9 t ADT: 1,150

TR139/OUTLET RD

Structurally Deficient

Over: MONROE CITY CK

SEC 10 RD DISTRICT10, Monroe, IL

Built 1978 Load: 27.9 t ADT: 75

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