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:

ILLINOIS CENTRAL R

Over: FAI-55

1 M S ILL 143, Madison, IL

Built 1956 ADT: 33,200

FAI 70 EB

Over: ILL 111

N OF FAIRMONT CITY, Madison, IL

Built 1961 ADT: 4,050

FAI 70 WB

Over: ILL 111

N OF FAIRMONT CITY, Madison, IL

Built 1961 ADT: 4,050

FAI 70 EB

Over: ILL 157

JCT 70 W COLLNVILLE, Madison, IL

Built 1960 ADT: 25,400

FAI 70 WB

Over: ILL 157

JCT FAI 70 & ILL 157, Madison, IL

Built 1960 ADT: 25,400

I-55/70 EB

Over: COLLINSVLE BELTLINE

COLLINSVILLE, Madison, IL

Built 1959 ADT: 17,700

I-55/70 WB

Over: COLLINSVLE BELTLINE

COLLINSVILLE, Madison, IL

Built 1959 ADT: 17,700

I-55/70 EB

Over: KEEBLER RD

1.5 M W 159, Madison, IL

Built 1959 ADT: 6,000

I-55/70 WB

Over: KEEBLER RD

1.5 M WEST 159, Madison, IL

Built 1959 ADT: 6,000

FAI 70 EB

Over: WILSON HEIGHTS RD

1.7 M E 159, Madison, IL

Built 1959 ADT: 1,100

FAI 70 WB

Over: WILSON HEIGHTS RD

1.7 M E 159, Madison, IL

Built 1958 ADT: 1,100

FAI 70 WB

Over: FAI 55 NB & SB

FAI 70 & FAI 55, Madison, IL

Built 1963 ADT: 33,200

FAI 270 EB

Over: ILL 3

.4 M E CHAIN R CNL, Madison, IL

Built 1962 ADT: 10,900

FAI 270 WB

Over: ILL 3

.4 M E CHAIN R CNL, Madison, IL

Built 1962 ADT: 11,800

I-270 EB

Over: St. Thomas Rd, NSRR

1/2 MI E OF IL 3, Madison, IL

Built 1962 ADT: 850

I-270 WB

Over: St. Thomas Rd, NSRR

1/2 MI E OF IL 3, Madison, IL

Built 1962 ADT: 850

FAI 270 EB

Over: OA Rd,UP,KCS,GWE,NS,IL20

1.5 MI W OF IL 111, Madison, IL

Built 1961 ADT: 4,600

FAI 270 WB

Over: OA Rd,UP,KCS,GWE,NS,IL20

1.5 MI W OF IL 111, Madison, IL

Built 1961 ADT: 4,600

I-270 EB

Over: Engineer Rd, A&SRR

1.25 MI W OF IL 111, Madison, IL

Built 1962 ADT: 325

I-270 WB

Over: Engineer Rd, A&SRR

1.25 MI W OF IL 111, Madison, IL

Built 1962 ADT: 325

FAI 270 EB

Over: ILL 111

AT PONTOON BEACH, Madison, IL

Built 1961 ADT: 13,200

FAI 270 WB

Over: ILL 111

AT PONTOON BEACH, Madison, IL

Built 1961 ADT: 13,200

FAI 270 WB

Over: OLD TROY RD/MCT TRL

1.3 M W FAI 55, Madison, IL

Built 1964 ADT: 4,500

FAI 270 EB

Over: OLD TROY RD/MCT TRL

1.3 M W FAI 55 & 70, Madison, IL

Built 1964 ADT: 4,500

FAI 270 EB

Over: FAI 55

JCT I-55/70/270 "3I", Madison, IL

Built 1964 ADT: 33,200

FAI 270 WB

Over: FAI 55

JCT I-55/70/270 "3I", Madison, IL

Built 1964 ADT: 33,200

FAI 270 EB

Over: FAI 70 WB RAMP

JCT FAI 55,70,270, Madison, IL

Built 1965 ADT: 46,100

OR-5 ChainOfRocksR

Over: Chain of Rocks Cn & 2 LR

1.3 M E MISS R, Madison, IL

Built 1949 ADT: 25

IL 140

Over: I-55

Hamel, Madison, IL

Built 1956 ADT: 31,500

US 40

Over: FAI 70

2.2 MI E GRNT FRK RD, Madison, IL

Built 1964 ADT: 26,900

BLACK LANE ramp

Over: FAI 70

2.15 MI WEST OF 157, Madison, IL

Built 1960 ADT: 49,900

ILL 157 SB

Over: FAI 270

1.5 MI N PETERS STA, Madison, IL

Built 1963 ADT: 38,500

ILL 157 NB

Over: FAI 270

1.5 MI N PETERS STA, Madison, IL

Built 1963 ADT: 38,500

ILL 4

Over: FAI 55

0.5 MI E WORDEN, Madison, IL

Built 1955 ADT: 30,700

ILL 4

Over: FAI 70

1.75 M S OF 143 & 4, Madison, IL

Built 1964 ADT: 27,500

IL 111 - HOMER ADA

Over: US 67

1 M E JCT 111, Madison, IL

Built 1958 ADT: 9,600

ICG RR

Over: ILL 111

1.5 M N JCT 140-111, Madison, IL

Built 1959 ADT: 19,500

IL 111/3-HOMER ADA

Over: ROGERS AV & BLOOMER

1 M N JCT 140 & 111, Madison, IL

Built 1958 ADT: 1,050

IL 111

Over: Access Rd, NSRR

1.25 M N 270, Madison, IL

Built 1940 ADT: 300

ILL 160

Over: FAI 70

2.2 M W PIERRON EXIT, Madison, IL

Built 1963 ADT: 23,600

SAND PRAIRIE ROAD

Over: I-55/70

1.5 MI E OF ILL 111, Madison, IL

Built 1961 ADT: 53,600

ILL 143

Over: FAI-55

2M E EDWARDSVILLE, Madison, IL

Built 1956 ADT: 30,100

ILL 143

Over: FAI 70

1.9 M E MARINE, Madison, IL

Built 1964 ADT: 23,600

PENN CENTRAL RR

Over: ILL 160

E OF HIGHLAND, Madison, IL

Built 1927 ADT: 1,700

Old Alton Edwrdsvl

Over: SIU North Access Rd

OLD 159 1.5 M W EDWR, Madison, IL

Built 1968 ADT: 5,550

FAS 775 (MARINE RD

Over: FAI 70

1.25 M E RTE 4, Madison, IL

Built 1962 ADT: 27,500

FAIRMONT LANE

Over: FAI 55/70/US 40

1.86 MI W OF IL 157, Madison, IL

Built 1960 ADT: 49,900

SAND ROAD/ CITY ST

Over: I-270

0.4 mi W of IL 157, Madison, IL

Built 1963 ADT: 49,800

PLEASNT RDG/FAU 91

Over: I-55/70

0.7 M W ILL 159, Madison, IL

Built 1959 ADT: 46,000

TR 208 (RIGGIN RD)

Over: FAI 70

.8MI E FAI 55,70,270, Madison, IL

Built 1965 ADT: 30,600

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 5, 2026