Monroe County, IL

130 public highway bridges

Monroe County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Monroe County, Illinois contains 130 public highway bridges. Roughly 57.7% are rated “Good,” 30% “Fair,” and 6.9% “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.

130
Total Bridges
57.7%
Good
30%
Fair
6.9%
Poor Condition

Condition Distribution

Good
57.7% (75)
Fair
30% (39)
Poor
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

CH 12

Poor

Over: DRAINAGE CANAL

0.1 M W VALMEYER C L, Monroe, IL

Built 1935 ADT: 400

MAEYSTOWN MSS 1030

Poor

Over: MAEYSTOWN CREEK

SW CL MAEYSTOWN, Monroe, IL

Built 1941 Load: 15.6 t ADT: 225

FAS-1858 (CH-12)

Poor

Over: Dennis Hollow

E CITY LIM VALMEYER, Monroe, IL

Built 1927 Load: 21.1 t ADT: 775

FAU 9300

Poor

Over: CARR CREEK

0.1M S COLUMBIA, Monroe, IL

Built 1995 Load: 24.9 t ADT: 4,100

MS 6190 (CARL ST)

Poor

Over: CREEK

200' SO. OF IL 3, Monroe, IL

Built 1972 Load: 24.9 t ADT: 1,150

TR139/OUTLET RD

Poor

Over: MONROE CITY CK

SEC 10 RD DISTRICT10, Monroe, IL

Built 1978 Load: 27.9 t ADT: 75

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

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.