Madison County, IL

543 public highway bridges

Madison County Bridge Snapshot

Madison County, Illinois contains 543 public highway bridges in the FHWA National Bridge Inventory. Roughly 36.1% are rated “Good,” 28.7% “Fair,” 6.4% “Poor,” and 6.4% 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.

543
Total Bridges
36.1%
Good
6.4%
Poor
6.4%
Structurally Deficient

Condition Distribution

Good
36.1% (196)
Fair
28.7% (156)
Poor
6.4% (35)
SD
6.4% (35)

All Bridges (543)

US 40

Good

Over: EAST FORK OF SILV.CK

0.4MI WEST ILL 4, Madison, IL

Built 1985 Load: 34.3 t ADT: 8,450

FAI 255

Good

Over: MCDONOUGH LAKE DITCH

.68MI N BLACK LANE, Madison, IL

Built 1987 Load: 34.3 t ADT: 40,300

IL 140

Good

Over: NSRR

2.9mi W of I-55, Madison, IL

Built 1985 Load: 34.7 t ADT: 4,800

PIN OAK RD/ TR 225

Good

Over: W. TRIB. SILVER CRK

3.3 MI E OF EDWARDSV, Madison, IL

Built 1989 Load: 34.7 t ADT: 150

FAU 8877/NEW POAG

Good

Over: ICG & CONRAIL RR

1 MI. S. HARFORD, Madison, IL

Built 1988 Load: 35.0 t ADT: 5,500

MAIN ST

Good

Over: JUDY'S BRANCH

S. MERIDIAN RD, Madison, IL

Built 2008 Load: 35.6 t ADT: 4,200

FAI 70 EB

Good

Over: SUGAR FORK

3.5 M E ILL 4, Madison, IL

Built 1964 Load: 36.0 t ADT: 13,750

TR 303

Good

Over: EAST FORK SILVER CR

ON HICKORY FLAT RD, Madison, IL

Built 1993 Load: 36.0 t ADT: 175

IL 140

Good

Over: Paddock Creek

1.9mi E of IL 159, Madison, IL

Built 1985 Load: 36.3 t ADT: 5,650

BLACK LANE

Good

Over: CANTEEN CREEK

.5 N OF COUNTY LINE, Madison, IL

Built 2001 Load: 36.3 t ADT: 950

FAS 775/POCAHONTAS

Good

Over: SUGAR FK CK

1.4MI E MARINE, Madison, IL

Built 1959 Load: 36.3 t ADT: 800

IL 140

Good

Over: UPRR

3.1mi W of I-55, Madison, IL

Built 1985 Load: 36.6 t ADT: 4,800

HORSESHOE LAKE RD

Good

Over: CAHOKIA Canal

1/2 MI W OF I-255, Madison, IL

Built 1995 Load: 36.6 t ADT: 9,600

ILL 143

Good

Over: STREAM

.5 MI E IL 111 W 310, Madison, IL

Built 1995 Load: 36.6 t ADT: 12,100

TR 281 LOWER MARIN

Good

Over: WENDELL BRANCH

1.0 MI NE TROY, Madison, IL

Built 2005 Load: 36.6 t ADT: 575

FAI 255 RAMP 6

Good

Over: DITCH

NB 255 TO WB 55/70, Madison, IL

Built 1986 Load: 36.9 t ADT: 450

FAS 1937 Troy-O'Fl

Good

Over: Mill Creek

3.3 Mi S of Troy, Madison, IL

Built 2022 Load: 36.9 t ADT: 8,050

IL 140

Good

Over: E Trib to Silver Crk

W end of Alahambra, Madison, IL

Built 2013 Load: 37.3 t ADT: 2,850

LEBANON RD/FAU 912

Good

Over: CANTEEN CREEK

2M EAST 159, Madison, IL

Built 2003 Load: 37.6 t ADT: 1,750

FAI 70

Good

Over: CANTEEN CK

1 MI E ILL 159, Madison, IL

Built 1939 Load: 37.9 t ADT: 45,600

IL 140

Good

Over: W Trib to Silver Crk

0.2mi E of IL 4, Madison, IL

Built 1992 Load: 38.2 t ADT: 2,750

TR 336A N. FRNTG R

Good

Over: CANTEEN CREEK

1.07MI E OF IL 159, Madison, IL

Built 2007 Load: 38.2 t ADT: 775

ILL 111

Good

Over: DRAIN TO HRSESHOE LK

.75 MI S IL 162, Madison, IL

Built 1940 Load: 38.6 t ADT: 6,800

IL 255 NB (FAP310N

Good

Over: FARMERS ACCESS RD

2 MI. SO. OF IL 143, Madison, IL

Built 1995 Load: 39.2 t ADT: 28,300

IL 255 SB (FAP310S

Good

Over: FARMERS ACCESS RD

2 MI. SO. OF IL 143, Madison, IL

Built 1995 Load: 39.2 t ADT: 28,300

MERIDIAN CONNECTOR

Good

Over: JUDY'S CREEK

.31 EAST OF 270, Madison, IL

Built 2001 Load: 39.2 t ADT: 2,350

ILL 143

Good

Over: OLD CAHOKIA CR CHNNL

.25 M W JCT 143-159, Madison, IL

Built 1954 Load: 39.5 t ADT: 7,950

IL 162

Good

Over: CAHOKIA CANAL

.8MI EAST OF I-255, Madison, IL

Built 1996 Load: 39.5 t ADT: 5,350

GLEN CROS/FAU 8899

Good

Over: JUDYS BRANCH

100' W OF BIKE TRAIL, Madison, IL

Built 2001 Load: 39.5 t ADT: 3,600

IL 157

Good

Over: DELAPLAINE CR

ON 157@WOODLAND SCHL, Madison, IL

Built 1997 Load: 39.9 t ADT: 9,850

TR 153 Buchta Road

Good

Over: Indian Creek

4 M NW Edwardsville, Madison, IL

Built 2018 Load: 39.9 t ADT: 1,350

IL 255 NB

Good

Over: UPRR

4 mi N of I-270, Madison, IL

Built 1995 Load: 40.2 t ADT: 28,300

FAU 9079/OLD COR R

Good

Over: MADISON CTY DITCH

2MI EAST IL 111, Madison, IL

Built 2007 Load: 40.5 t ADT: 2,200

IL 255 SB (FAP310S

Good

Over: E FORK WOOD RIVER CK

.75 MI S OF CULP LN, Madison, IL

Built 2005 Load: 40.5 t ADT: 16,300

IL 255 NB (FAP310N

Good

Over: E FORK WOODRIVER CK

.75 MI S OF CULP LN, Madison, IL

Built 2005 Load: 40.5 t ADT: 16,300

TR 281 LOWER MARIN

Good

Over: TRIB TO WENDELL CK

1/2 EAST TROY, Madison, IL

Built 1992 Load: 40.5 t ADT: 575

IL 255 SB

Good

Over: UPRR

4 mi N of I-270, Madison, IL

Built 1995 Load: 40.8 t ADT: 28,300

IL 140

Good

Over: E Fork Silver Creek

0.5mi E of IL 160, Madison, IL

Built 2012 Load: 40.8 t ADT: 1,700

I-55 SB

Good

Over: UPRR

N OF NEW DOUGLAS RD, Madison, IL

Built 1973 Load: 41.5 t ADT: 14,400

IL 159

Good

Over: UPRR

3 mi N of IL 143, Madison, IL

Built 1996 Load: 41.5 t ADT: 5,050

OLD CARPENTER/TR 1

Good

Over: TRIB TO CAHOKIA CK

2.5MI N EDWARDSVILLE, Madison, IL

Built 2006 Load: 41.5 t ADT: 625

Albers Lane - MS 9

Good

Over: Rocky Branch Creek

N Bethalto, Madison, IL

Built 2022 Load: 41.5 t ADT: 700

US 67 NB

Good

Over: SO. BRANCH PIASA CR.

1.4MI SO. JERSEY CO., Madison, IL

Built 2009 Load: 41.8 t ADT: 11,200

CH 42 Pin Oak Road

Good

Over: Little Mooney Creek

0.5 Mi E Edwardsvill, Madison, IL

Built 2020 Load: 42.4 t ADT: 200

IL 143

Good

Over: Indian Creek

3.5 M NW Edwardsvill, Madison, IL

Built 2018 Load: 42.8 t ADT: 10,500

TR 95 McCoy Road

Good

Over: Rocky Branch

1.5 Mi NW Moro, Madison, IL

Built 2020 Load: 42.8 t ADT: 300

ILL 143

Good

Over: SUGAR FORK CREEK

1.7 M E MARINE, Madison, IL

Built 1939 Load: 44.1 t ADT: 4,450

IL 140

Good

Over: Mid Trib Silver Crk

0.4mi E of IL 4, Madison, IL

Built 1992 Load: 44.1 t ADT: 2,750

STAMPER LN/ MSS 11

Good

Over: ROCKY FORK

1MI NW ALTON, Madison, IL

Built 1967 Load: 44.1 t ADT: 2,150

TR 228

Good

Over: CONRAIL RR

1MI SE OF TROY, Madison, IL

Built 1997 Load: 44.4 t ADT: 125

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