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)

CH 25(FAU 7454)

Poor

Over: SANGAMON RIVER

2.5 MI N OF OAKLEY, Macon, IL

Built 1981 Load: 30.8 t ADT: 1,300

FAS 644(CH 55)

Poor

Over: OVERFLOW OF SANGAMON

3.3 MI S NIANTIC, Macon, IL

Built 1979 Load: 31.4 t ADT: 550

Muni 6802 -Traughb

Poor

Over: FINLEY CREEK

1.5 MI S OF MT ZION, Macon, IL

Built 1981 Load: 31.4 t ADT: 150

FAS 546(CH 21)

Poor

Over: Trib N Fork Creek

6.8 MI W OF MAROA, Macon, IL

Built 1983 Load: 31.4 t ADT: 300

CH 18(SCHOOL RD)

Poor

Over: FRIENDS CREEK

1.5 MI N ARGENTA, Macon, IL

Built 1977 Load: 31.8 t ADT: 200

CH 18(SCHOOL RD)

Poor

Over: FRIENDS CREEK

2 MI N OF ARGENTA, Macon, IL

Built 1988 Load: 32.4 t ADT: 125

FAU 7406 (TR 217)

Poor

Over: Trib Big Creek

1 MI E MT ZION, Macon, IL

Built 2005 Load: 32.4 t ADT: 1,800

FAU 7431

Poor

Over: TRIB STEVENS CREEK

VILLAGE OF FORSYTH, Macon, IL

Built 2011 Load: 32.4 t ADT: 550

TR 251(HOPEWELL RD

Poor

Over: FINLEY CREEK

2.3 MI S MT ZION, Macon, IL

Built 1979 Load: 33.4 t ADT: 50

IL 105(FAP 741)

Poor

Over: LONG CREEK

4 MI E OF DECATUR, Macon, IL

Built 1961 Load: 33.7 t ADT: 2,100

TR 229(ZION CHAPEL

Poor

Over: SPRING CREEK

4.25 MI N BLUE MOUND, Macon, IL

Built 1980 Load: 34.7 t ADT: 100

TR 7(DUROC RD)

Poor

Over: STREAM

2.5 MI NW ARGENTA, Macon, IL

Built 1982 Load: 35.0 t ADT: 20

TR 34(LINCOLN MEMO

Poor

Over: WILLOW BRANCH

2.2 MI NW HARRISTOWN, Macon, IL

Built 1976 Load: 36.0 t ADT: 25

TR 92(WOODCOCK RD)

Poor

Over: WILLOW BRANCH

1.75 MI N OF CO LINE, Macon, IL

Built 2003 Load: 36.6 t ADT: 225

LOST BRIDGE(FAU 73

Poor

Over: LAKE DECATUR

ACROSS SE LAKE DECAT, Macon, IL

Built 1961 Load: 37.9 t ADT: 9,000

TR 109 A

Poor

Over: Trib Long Pt Slough

.5 MI E OF NIANTIC, Macon, IL

Built 2001 Load: 38.9 t ADT: 75

FAU 7454(CH 25)

Poor

Over: SANGAMON R OVERFLOW

3.1 MI N OF OAKLEY, Macon, IL

Built 1995 Load: 48.0 t ADT: 1,300

TR 261(BLUE MOUND

Poor

Over: DRY BRANCH

2.8 MI W OF MACON, Macon, IL

Built 1973 Load: 52.5 t ADT: 275

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.