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)

Sort:

IL 140 & IL 111

Over: Abandon RR ownd by quarr

0.1mi E of IL 3, Madison, IL

Built 1975 Load: 36.9 t ADT: 18,300

ILL 3 NB

Over: WOOD RIVER CREEK

W CL OF E ALTON, Madison, IL

Built 1984 Load: 36.9 t ADT: 21,100

US 40 / ILL 143

Over: W Trib to Sugar Crk

2M E Hghlnd rndabout, Madison, IL

Built 1901 Load: 36.9 t ADT: 5,300

TR 252

Over: TRIB TO SILVER CK

2.0 MI SW MARINE, Madison, IL

Built 1977 Load: 36.9 t ADT: 200

FAS 1937/TROY OFAL

Over: CONRAIL RR

1.5 MI S TROY, Madison, IL

Built 1987 Load: 37.6 t ADT: 8,150

IL 159

Over: Cahokia Creek

0.25 mi N of Edwardsville, Madison, IL

Built 1937 Load: 38.2 t ADT: 6,550

IL 143

Over: NSRR, GWERR, UPRR

0.3 MI E OF IL 3, Madison, IL

Built 1981 Load: 38.2 t ADT: 11,900

FAI-55,RAMPS,&FR R

Over: TRIB TO SILVER CREEK

N OF NEW DOUGLAS RD, Madison, IL

Built 1970 Load: 38.9 t ADT: 28,800

LOW. MARINE RD/TR2

Over: SILVER CK.

3 MI. NE TROY, Madison, IL

Built 1991 Load: 38.9 t ADT: 475

ROSE ROAD/ TR 395

Over: TRIB TO SUGAR CK

5.1 MI S HIGHLAND, Madison, IL

Built 1981 Load: 39.2 t ADT: 225

FAI 55/70 EB

Over: CANTEEN CREEK

FAI 70 OVER CANTEEN, Madison, IL

Built 1960 Load: 39.5 t ADT: 26,800

FAI 55/70 WB

Over: CANTEEN CREEK

FAI 70 OVER CANTEEN, Madison, IL

Built 1960 Load: 39.5 t ADT: 26,800

FAI 70 EB

Over: HIGHLAND SILVER LAKE

2.8 M E ILL 143, Madison, IL

Built 1962 Load: 39.5 t ADT: 11,800

FAI 70 WB

Over: HIGHLAND SILVER LAKE

2.8 M E ILL 143, Madison, IL

Built 1962 Load: 39.5 t ADT: 11,800

FAS 2735

Over: W FK CAHOKIA CK

3MI E PRRTWN, Madison, IL

Built 1953 Load: 39.5 t ADT: 1,600

FAS 775/POCAHONTAS

Over: SAND CK

2.9MI E MARINE, Madison, IL

Built 1959 Load: 39.5 t ADT: 700

MAYER ROAD/ TR 239

Over: TRIB TO SUGAR CREEK

2.0 MI EAST MARINE, Madison, IL

Built 1976 Load: 39.5 t ADT: 125

CH 73

Over: PADDOCK CREEK

4.5 MI E MEADOWBROOK, Madison, IL

Built 1987 Load: 39.9 t ADT: 1,950

LIVINGSTON ROAD

Over: SILVER CREEK

1.7 MI E. I-55, Madison, IL

Built 1991 Load: 40.2 t ADT: 1,400

FAS 2735

Over: SHERRY CK

1.2MI E PRRTWN, Madison, IL

Built 1950 Load: 40.2 t ADT: 1,800

ILL 111

Over: HORSESHOE LK CHANNEL

1.1mi N of 55/70, Madison, IL

Built 1941 Load: 40.5 t ADT: 4,050

OLD ALTON-EDW RD C

Over: CAHOKIA CREEK

.25 S ILL 143 & 159, Madison, IL

Built 1990 Load: 40.5 t ADT: 1,200

CARPENTER RD/ TR 1

Over: TRIB TO CAHOKIA CK

2.0 MI SW CARPENTER, Madison, IL

Built 1981 Load: 40.5 t ADT: 350

IL 3 SB

Over: WOODRIVER CREEK

W CITY LIMIT E ALTON, Madison, IL

Built 1992 Load: 40.8 t ADT: 21,100

LEE ROAD/ TR 397

Over: TRIB TO SUGAR CREEK

4.7 MILES S HIGHLAND, Madison, IL

Built 1985 Load: 40.8 t ADT: 225

I-55 NB

Over: UPRR

N OF NEW DOUGLAS RD, Madison, IL

Built 1973 Load: 41.5 t ADT: 14,400

TR 228 BLACKJACK R

Over: MILL CREEK

4.0 MI SE TROY, Madison, IL

Built 1976 Load: 41.5 t ADT: 275

FAI 255NB

Over: CAHOKIA CANAL

.9MI SO ILL 162, Madison, IL

Built 1985 Load: 41.8 t ADT: 20,150

FAI 255 SB

Over: CAHOKIA CANAL

.9MI SO ILL 162, Madison, IL

Built 1985 Load: 41.8 t ADT: 20,150

IL 159 & IL 143

Over: NSRR

0.1 MI NW EDWRDSVLLE, Madison, IL

Built 1936 Load: 42.8 t ADT: 11,500

IL 3

Over: NSRR

0.6MI N OF IL 143, Madison, IL

Built 1947 Load: 43.4 t ADT: 9,950

FAI 55

Over: TRIB TO SILVER CREEK

0.24 MI S OF ILL 4, Madison, IL

Built 1971 Load: 43.7 t ADT: 31,500

IL 111

Over: UPRR

2 M N 270, Madison, IL

Built 1940 Load: 44.7 t ADT: 4,800

FAS 2735

Over: E FK SHERRY CK

1.6MI E PRRTWN, Madison, IL

Built 1950 Load: 44.7 t ADT: 1,800

N SIU ENT RD NB

Over: CAHOKIA CREEK

0.6 MI S ILL 143, Madison, IL

Built 1967 Load: 45.4 t ADT: 2,775

FAS 737/SEILER RD.

Over: HONEYCUT BRANCH

1.2 MI W FOSTERBURGM, Madison, IL

Built 1977 Load: 46.0 t ADT: 475

FAS 737SEILER RD

Over: INDIAN CREEK

1MI E OF DORSEY, Madison, IL

Built 1997 Load: 46.0 t ADT: 1,250

ILL 143

Over: MOONEY CREEK

0.5 M E JCT 157, Madison, IL

Built 1940 Load: 47.6 t ADT: 4,450

MSS 42 FAIRMONT AV

Over: CANTEEN CANAL

1.5MI W COLLINSVILLE, Madison, IL

Built 1973 Load: 48.6 t ADT: 825

N SIU ENT RD SB

Over: CAHOKIA CREEK

0.6 MI S ILL 143, Madison, IL

Built 1967 Load: 49.6 t ADT: 2,775

ILL 143

Over: HIGHLAND LAKE

2 M W HIGHLAND, Madison, IL

Built 1962 Load: 49.6 t ADT: 8,850

SAND PRAIRIE ROAD

Over: CANTEEN CREEK

1.32 M S ILL 111, Madison, IL

Built 1955 Load: 50.2 t ADT: 1,700

FAU 8877

Over: NORFORK & WESTERN RR

1.8 MI E ILL 111, Madison, IL

Built 1977 Load: 51.5 t ADT: 7,400

ELM ST./ TR 597A

Over: MEADOWBROOK CR.

1.5MI. E. BETHALTO, Madison, IL

Built 1973 Load: 51.5 t ADT: 75

SAND PRAIRIE ROAD

Over: CAHOKIA CANAL

1.25 M S ILL 111, Madison, IL

Built 1955 Load: 53.1 t ADT: 1,700

EASTPORT PLAZA DR

Over: SCHOOL HOUSE BRANCH

.05 S OF SA 30, Madison, IL

Built 1963 Load: 55.4 t ADT: 3,000

LARCHER RD/ TR 49

Over: SILVER CK

2.0MI E LIVINGSTON, Madison, IL

Built 1901 Load: 57.7 t ADT: 50

FAI 270 EB

Over: BIKE TRAIL/STREAM

1.4 M E ILL 157, Madison, IL

Built 1963 Load: 62.5 t ADT: 19,250

FAI 270 WB

Over: BIKE TRAIL/STREAM

1.4 M E ILL 157, Madison, IL

Built 1963 Load: 62.5 t ADT: 19,250

OLD US 40-CVILLE R

Over: CANTEEN CREEK

1/2 MI W FAIRMNT TRK, Madison, IL

Built 1991 Load: 63.2 t ADT: 7,450

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026