Macon County, IL

368 public highway bridges

Macon County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Macon County, Illinois contains 368 public highway bridges. Roughly 23.4% are rated “Good,” 44.3% “Fair,” and 13% “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.

368

Total Bridges

23.4%

Good

44.3%

Fair

13%

Poor Condition

Condition Distribution

Good

23.4% (86)

Fair

44.3% (163)

Poor

13% (48)

All Bridges (368)

Sort:

N&S RR

Over: US 51(FAP 710)

ON MAIN ST DECATUR, Macon, IL

Built 1934 ADT: 10,100

IC RR

Over: US 51(FAP 710)

S MAIN DECATUR, Macon, IL

Built 1933 ADT: 7,600

US-51 SB (FAP 710)

Over: IL 105(FAP 712)

IN DECATUR, Macon, IL

Built 1962 ADT: 1,900

US-51NB (FAP 710AL

Over: IL 105(FAP 712)

IN DECATUR, Macon, IL

Built 1963 ADT: 7,100

IC RR

Over: US 51(FAP 710)

1 MI S OF DECATUR, Macon, IL

Built 1959 ADT: 9,300

IC RR

Over: US 51(FAP 710)

IN DECATUR, Macon, IL

Built 1965 ADT: 8,700

US 51(FAP 710 ALT)

Over: NS RR & CERRO GORDO ST.

IN DECATUR, Macon, IL

Built 1966 ADT: 850

US 36(FAP 320)

Over: LAKE SHORE DR(U 7390

IN DECATUR, Macon, IL

Built 1954 ADT: 200

IT RR

Over: IL 121(FAP 320)

N OF GARFIELD-DECATR, Macon, IL

Built 1943 ADT: 15,100

CN RR

Over: FAP 714 (IL 105)

SWCL OF DECATUR, Macon, IL

Built 1962 ADT: 9,800

IC RR

Over: PERSHING(FAP 320)

IN DECATUR, Macon, IL

Built 1959 ADT: 18,100

IC RR

Over: OAKLAND(FAU 7429)

IN DECATUR, Macon, IL

Built 1934 ADT: 14,800

N&S RR

Over: FAIRVIEW(FAU 7429)

IN DECATUR, Macon, IL

Built 1900 ADT: 9,500

TR 150(GREENSWITCH

Over: I-72

1.83 MI S FAS 549, Macon, IL

Built 1972 ADT: 12,300

TR 4(ACOM RD)

Over: I-72

1.5 MI SW NIANTIC, Macon, IL

Built 1976 ADT: 14,500

CH 55(FAS 644)

Over: I-72

1 MI S OF NIANTIC, Macon, IL

Built 1976 ADT: 14,800

CH 27(FAS 551)

Over: I-72

1 MI SW HARRISTOWN, Macon, IL

Built 1976 ADT: 14,800

FAU 7351

Over: I-72

1 MI S HARRISTOWN, Macon, IL

Built 1976 ADT: 14,800

I-72 (EB)

Over: FAP 323 WB(US 36)

IN HARRISTOWN, Macon, IL

Built 1976 ADT: 4,350

I-72 (EB)

Over: FAP 322A(US 51 SB)

IN HARRISTOWN, Macon, IL

Built 1976 ADT: 4,500

I-72(WB) & US 51(S

Over: FAU 7381

N EDGE HARRISTOWN, Macon, IL

Built 1976 ADT: 2,750

I-72(EB) & US 51(N

Over: FAU 7381(HARSTWN BLV

N EDGE HARRISTOWN, Macon, IL

Built 1976 ADT: 2,750

I-72 (WB)

Over: TR 117 NS RR

1 MI N HARRISTOWN, Macon, IL

Built 1976 ADT: 50

I-72 (EB)

Over: TR 117 NS RR

1 MI N HARRISTOWN, Macon, IL

Built 1976 ADT: 50

CH 41(FAS 1538)

Over: I-72

2 MI N HARRISTOWN, Macon, IL

Built 1976 ADT: 14,000

FAU 7354 S.ELIZABE

Over: I-72

.5 MI S ILL-121 INT, Macon, IL

Built 1976 ADT: 14,000

I-72 (EB)

Over: FA320 (IL-121) & CN RR

1.5 MI NW DECATUR, Macon, IL

Built 1976 ADT: 7,600

I-72 (WB)

Over: FA320 (IL-121) & CN RR

1.5 MI NW DECATUR, Macon, IL

Built 1976 ADT: 7,600

FAU 7431(OAKLAND A

Over: I-72

N EDGE OF DECATUR, Macon, IL

Built 1976 ADT: 12,800

I-72 (EB)

Over: IL-48 & DECATUR CENTRALR

2.5 MI E FORSYTH, Macon, IL

Built 1974 ADT: 7,600

I-72 (WB)

Over: IL-48 & DECATUR CENTRALR

2.5 MI E FORSYTH, Macon, IL

Built 1974 ADT: 7,600

TR 45(KIRBY RD)

Over: I-72

NE OF DECATUR, Macon, IL

Built 1975 ADT: 11,500

CH 20(FAS 549B)

Over: I-72

1 MI E OF OREANA, Macon, IL

Built 1975 ADT: 11,500

FAS 544(CH 25)

Over: I-72

ARGENTA INTERCHANGE, Macon, IL

Built 1975 ADT: 11,900

TR 270(CEMETERY RD

Over: I-72

.5 MI SE ARGENTA, Macon, IL

Built 1975 ADT: 11,900

I-72 (EB)

Over: FAS1536 DECATUR CENTRALR

1.5 MI NE ARGENTA, Macon, IL

Built 1975 ADT: 750

I-72 (WB)

Over: FAS1536 DECATUR CENTRALR

1.5 MI NE ARGENTA, Macon, IL

Built 1975 ADT: 750

CH 18(SCHOOL RD)

Over: I-72

1.5 MI W OF CO LINE, Macon, IL

Built 1975 ADT: 11,900

FAP 322(NB) (US 5

Over: BS-51 & DECATUR CENTRALR

1 MI S OF DECATUR, Macon, IL

Built 1976 ADT: 6,350

FAP 322(SB) (US 51

Over: BS-51 & DECATUR CENTRALR

1 MI S OF DECATUR, Macon, IL

Built 1976 ADT: 6,350

FAU 7421

Over: FAP 322A(US 51)

1 MI SW OF DECATUR, Macon, IL

Built 1976 ADT: 5,900

FAP 322(NB) (US 5

Over: FAU 7426(TAYLOR RD)

1 MI S OF DECATUR, Macon, IL

Built 1976 ADT: 275

FAP 322(SB) (US 5

Over: FAU 7426(TAYLOR RD)

1 MI S OF DECATUR, Macon, IL

Built 1976 ADT: 275

FAP 323(WB)(US 36)

Over: FAP 322 (US 51)

IN HARRISTOWN, Macon, IL

Built 1976 ADT: 4,500

FAP 323(EB)(US 36)

Over: FAP 322(US 51)

IN HARRISTOWN, Macon, IL

Built 1976 ADT: 5,900

FAP 322(SB)(US 51)

Over: IL-48 & NS RR

.5 MI SW OF DECATUR, Macon, IL

Built 1978 ADT: 4,550

FAP 322(NB)(US 51)

Over: IL-48 & NS RR

.5 MI SW OF DECATUR, Macon, IL

Built 1978 ADT: 4,550

NS RR

Over: FAU 7429(IL 48)

FAIRVIEW(DECATUR), Macon, IL

Built 1992 ADT: 13,500

FAP 710(NB BS RT 5

Over: FAP 322(US 51)

2 MI S OF ELWIN, Macon, IL

Built 1994 ADT: 2,700

TR 114B(RILEY RD)

Over: FAP 322(US 51)

2 MI S OF ELWIN, Macon, IL

Built 1994 ADT: 2,700

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

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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.