Macon County, IL

368 public highway bridges

Macon County Bridge Snapshot

Macon County, Illinois contains 368 public highway bridges in the FHWA National Bridge Inventory. Roughly 23.4% are rated “Good,” 44.3% “Fair,” 13% “Poor,” and 13% 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.

368
Total Bridges
23.4%
Good
13%
Poor
13%
Structurally Deficient

Condition Distribution

Good
23.4% (86)
Fair
44.3% (163)
Poor
13% (48)
SD
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.

Related

Browse all → | Rankings →
Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial