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)

US 36(FAP 323)

Fair

Over: LONG CREEK

E LONG CREEK, Macon, IL

Built 1928 Load: 40.5 t ADT: 4,450

FAP 322 (US 51) N.

Fair

Over: WILLOW BRANCH CREEK

2 MI S OF MACON, Macon, IL

Built 2001 Load: 40.5 t ADT: 5,700

FAP 322 (US 51) S.

Fair

Over: WILLOW BRANCH CREEK

2 MI S OF MACON, Macon, IL

Built 2001 Load: 40.5 t ADT: 5,700

TR 74(HIBBARD RD)

Fair

Over: WILLOW BRANCH

2.3 MI SW MACON, Macon, IL

Built 1909 Load: 40.5 t ADT: 100

US 36(FAP 323)

Fair

Over: CREEK

W OF CASNER, Macon, IL

Built 1928 Load: 41.5 t ADT: 2,700

IL 48(FAP 714)

Fair

Over: MOSQUITO CREEK TRIB

1 MI NE BLUE MOUND, Macon, IL

Built 1928 Load: 41.5 t ADT: 4,500

I-72 (EB)

Fair

Over: STREAM

1 MI SW HARRISTOWN, Macon, IL

Built 1976 Load: 41.5 t ADT: 7,400

I-72 (WB)

Fair

Over: STREAM

1 MI SW HARRISTOWN, Macon, IL

Built 1976 Load: 41.5 t ADT: 7,400

FAP 322(NB)(US 51)

Fair

Over: SANGAMON RIVER

1 MI S HARRISTOWN, Macon, IL

Built 1976 Load: 41.8 t ADT: 5,900

FAP 322(SB)(US 51)

Fair

Over: SANGAMON RIVER

1 MI S HARRISTOWN, Macon, IL

Built 1976 Load: 41.8 t ADT: 5,900

FAU-7352 CH-20

Fair

Over: Stream

1.4 MI W FORSYTH, Macon, IL

Built 2010 Load: 41.8 t ADT: 1,400

US 51 (SB) (FAP 32

Fair

Over: NORTH FORK CREEK

.5 MI NW OF MAROA, Macon, IL

Built 1985 Load: 42.4 t ADT: 8,950

US 51 (NB) FAP 32

Fair

Over: NORTH FORK CREEK

.5 MI NW OF MAROA, Macon, IL

Built 1985 Load: 42.4 t ADT: 8,950

FAP 323(US 36)

Fair

Over: STEVENS CREEK

W OF DECATUR, Macon, IL

Built 1998 Load: 42.4 t ADT: 7,250

FAP 320(IL 121)

Fair

Over: LONG CREEK

1.5 MI N MT ZION, Macon, IL

Built 1975 Load: 42.8 t ADT: 12,600

I-72 (EB)

Fair

Over: STEVENS CREEK

S EDGE FORSYTH, Macon, IL

Built 1974 Load: 44.7 t ADT: 6,400

I-72 (WB)

Fair

Over: STEVENS CREEK

S EDGE FORSYTH, Macon, IL

Built 1974 Load: 44.7 t ADT: 6,400

FAP 712(IL 48)

Fair

Over: STREAM

NE EDGE OF DECATUR, Macon, IL

Built 1976 Load: 46.3 t ADT: 7,300

MOUND RD(FAU 7359)

Fair

Over: SPRING CREEK

EAST MOUND ROAD, Macon, IL

Built 1964 Load: 47.0 t ADT: 8,100

ILL 121(FAP 320)

Fair

Over: STEVENS CREEK

NW EDGE OF DECATUR, Macon, IL

Built 1984 Load: 47.6 t ADT: 7,950

FAP 322 (US 51)

Fair

Over: SPRING CREEK

S BETWEEN IL48&BSN51, Macon, IL

Built 1976 Load: 48.6 t ADT: 4,400

I-72 (EB)

Fair

Over: SPRING CREEK

1.25 MI E FORSYTH, Macon, IL

Built 1975 Load: 48.9 t ADT: 6,150

I-72 (WB)

Fair

Over: SPRING CREEK

1.25 MI E FORSYTH, Macon, IL

Built 1975 Load: 48.9 t ADT: 6,150

FAU-7352 (CH-20)

Fair

Over: STREAM

1.5 MI W FORSYTH, Macon, IL

Built 2010 Load: 50.2 t ADT: 1,250

IL 48 (FAS 1536)

Fair

Over: FRIENDS CREEK

.5 MI NE ARGENTA, Macon, IL

Built 2009 Load: 50.5 t ADT: 1,150

US 51 SB (FAP 710)

Fair

Over: SPRING CREEK

0.3MI N PERSHING RD, Macon, IL

Built 1965 Load: 55.7 t ADT: 10,000

FAP 320(IL 48 & 12

Fair

Over: DITCH

.16 MI W IL 48 N, Macon, IL

Built 1981 Load: 56.4 t ADT: 13,000

US 51 NB(FAP 710AL

Fair

Over: SPRING CREEK

0.3MI N PERSHING RD, Macon, IL

Built 1965 Load: 60.3 t ADT: 9,500

TR 253(DUMMERMUTH

Fair

Over: STREAM

2.7 MI NW MACON, Macon, IL

Built 1983 Load: 60.9 t ADT: 50

TR 179

Fair

Over: STREAM

3.8 MI SW HARRISTOWN, Macon, IL

Built 2001 Load: 71.6 t ADT: 150

FAP 320(IL 121)

Fair

Over: NS RR

IN DECATUR, Macon, IL

Built 1991 Load: 73.5 t ADT: 18,900

TR 148(WALMSLEY RD

Fair

Over: SAND CREEK

0.75 MI S TURPIN, Macon, IL

Built 1966 Load: 74.2 t ADT: 125

I-72

Fair

Over: STREAM

4.5 MI E FORSYTH, Macon, IL

Built 1975 Load: 97.2 t ADT: 11,500

I-72

Fair

Over: STREAM

1 MI SE OF OREANA, Macon, IL

Built 1975 Load: 97.2 t ADT: 11,500

CH 34 WALKER RD

Good

Over: STREAM

2 MI SW DALTON CITY, Macon, IL

Built 2004 ADT: 100

FAS 552

Good

Over: MOSQUITO CREEK

0.5 MI W ELWIN, Macon, IL

Built 2013 ADT: 1,100

TR 146(SAWYER RD)

Good

Over: STREAM

3.2 MI SSE MAROA, Macon, IL

Built 1909 Load: 15.6 t ADT: 125

TR 3

Good

Over: LAKE FORK CREEK

8 MI W OF MAROA, Macon, IL

Built 2012 Load: 25.6 t ADT: 125

TR 136

Good

Over: SAND CREEK

4 MI SW MT ZION, Macon, IL

Built 1999 Load: 27.2 t ADT: 75

FAS-549A CH-20

Good

Over: Ditch

2 MI W OREANA, Macon, IL

Built 2007 Load: 30.8 t ADT: 1,350

IL 105 (EB)(FAP 74

Good

Over: LAKE DECATUR

IN DECATUR, Macon, IL

Built 1970 Load: 32.4 t ADT: 7,800

IL 105 (WB)(FAP 74

Good

Over: LAKE DECATUR

IN DECATUR, Macon, IL

Built 1970 Load: 32.4 t ADT: 7,800

FAP 322 (US 51)

Good

Over: DRY CREEK

.6 MI S OF MACON, Macon, IL

Built 2001 Load: 32.4 t ADT: 5,700

IL 121 (FAP 320)

Good

Over: STREAM

2 MI NW DALTON CITY, Macon, IL

Built 2007 Load: 32.4 t ADT: 3,950

TR 65

Good

Over: STREAM

2 MI N OFOAKLEY, Macon, IL

Built 1998 Load: 32.4 t ADT: 150

TR 75

Good

Over: WILLOW BRANCH

3.1 MI NE NIANTIC, Macon, IL

Built 1995 Load: 32.4 t ADT: 25

TR 2

Good

Over: BR OF LONG PT SLOUGH

2.5 MI W OF NIANTIC, Macon, IL

Built 1994 Load: 32.4 t ADT: 50

TR 271 Crosson Rd

Good

Over: DRAINAGE DITCH

3 MI SSW DALTON CITY, Macon, IL

Built 1995 Load: 32.4 t ADT: 50

TR 20 A

Good

Over: LAKE FORK DRAIN DIT

4.4 MI W WARRENSBURG, Macon, IL

Built 1994 Load: 32.4 t ADT: 35

TR 263(RIDLEN RD)

Good

Over: DRY BRANCH CREEK

.75 MI SE OF MACON, Macon, IL

Built 1996 Load: 32.4 t ADT: 350

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.