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)

Sort:

TR 109(ILLIOPOLIS

Over: WILLOW BRANCH

2.2 MI W NIANTIC, Macon, IL

Built 1981 Load: 32.4 t ADT: 100

CARROLL ST

Over: SPRING CREEK

BETWEEN MOUND PERSHI, Macon, IL

Built 1983 Load: 32.4 t ADT: 200

TR 29 Schellabarg

Over: STEVENS CREEK

1.6 MI NW FORSYTH, Macon, IL

Built 1979 Load: 32.4 t ADT: 25

TR 128B(OAKLAND AV

Over: STEVENS CREEK

1.6 MI NW FORSYTH, Macon, IL

Built 1979 Load: 32.4 t ADT: 100

TR 52(BOODY RD)

Over: DRY BRANCH

2.5 MI W MACON, Macon, IL

Built 1981 Load: 32.4 t ADT: 50

TR 157A(RIDGE RD)

Over: LONG CREEK

3 MI N OF CASNER, Macon, IL

Built 1980 Load: 32.4 t ADT: 50

TR 255(MOSQUITO CR

Over: MOSQUITO CREEK

2 MI NE BLUE MOUND, Macon, IL

Built 1982 Load: 32.4 t ADT: 25

TR 32(ARCHERY CLUB

Over: MOSQUITO CREEK

2 MI NE BLUE MOUND, Macon, IL

Built 1982 Load: 32.4 t ADT: 25

TR 4(ACOM ROAD)

Over: WILLOW BRANCH

1.7 MI W NIANTIC, Macon, IL

Built 1985 Load: 32.4 t ADT: 100

TR 8(MOONEY RD)

Over: WILLOW BRANCH

1 MI NW NIANTIC, Macon, IL

Built 1983 Load: 32.4 t ADT: 50

TR 8(MOONEY RD)

Over: WILLOW BRANCH

1 MI NW NIANTIC, Macon, IL

Built 1983 Load: 32.4 t ADT: 50

TR 20A(N 3RD P M

Over: WILLOW BRANCH

2.6 MI NE NIANTIC, Macon, IL

Built 1982 Load: 32.4 t ADT: 75

WEAVER AVE(MS 2606

Over: STEVENS CREEK

IN CITY OF FORSYTH, Macon, IL

Built 1982 Load: 32.4 t ADT: 2,800

TR 36A(ROSEDALE RD

Over: MOSQUITO CREEK

2 MI NE BLUE MOUND, Macon, IL

Built 1982 Load: 32.4 t ADT: 20

TR 270(CEMETERY RD

Over: FRIENDS CREEK

1.9 MI NE ARGENTA, Macon, IL

Built 1981 Load: 32.4 t ADT: 150

TR 300(RUCH RD)

Over: STREAM

2.3 MI NE OAKLEY, Macon, IL

Built 1982 Load: 32.4 t ADT: 175

TR 57(CABIN RD)

Over: STREAM

3.25 MI NE OAKLEY, Macon, IL

Built 1983 Load: 32.4 t ADT: 50

TR 58(JOCKISCH RD)

Over: Trib Sangamon River

SW EDGE OF DECATUR, Macon, IL

Built 1984 Load: 32.4 t ADT: 50

TR 36(ROSEDALE RD)

Over: STREAM

3.5 MI NE BLUE MOUND, Macon, IL

Built 1983 Load: 32.4 t ADT: 50

TR 254(CONNOR'S RD

Over: STREAM

6 MI E MAROA, Macon, IL

Built 1983 Load: 32.4 t ADT: 50

TR 308(BRIGGS RD)

Over: FRIENDS CREEK DITCH

5 MI NE OF ARGENTA, Macon, IL

Built 1984 Load: 32.4 t ADT: 25

TR 276(DUNBAR RD)

Over: FRIENDS CREEK TRIB

2.3 MI SE OF ARGENTA, Macon, IL

Built 1984 Load: 32.4 t ADT: 50

TR 25A(PARR RD)

Over: FRIENDS CREEK

1.25 MI SE ARGENTA, Macon, IL

Built 1985 Load: 32.4 t ADT: 100

CH 30(FAS 552)

Over: SAND CREEK

2 MI W OF MT ZION, Macon, IL

Built 1986 Load: 32.4 t ADT: 4,650

TR 136A(CORNTHWAIT

Over: LONG GROVE CREEK

5 MI SE OF MACON, Macon, IL

Built 1984 Load: 32.4 t ADT: 75

TR 52A(BOODY RD)

Over: DRY BRANCH

4.2 MI E BLUE MOUND, Macon, IL

Built 1987 Load: 32.4 t ADT: 50

TR 74(HIBBARD RD)

Over: MOSQUITO CREEK

2.5 MI N OF MACON, Macon, IL

Built 1985 Load: 32.4 t ADT: 125

TR 110(JANVRIN RD)

Over: LAKE FORK CREEK

2 MILES W OF MAROA, Macon, IL

Built 1986 Load: 32.4 t ADT: 50

TR 259(HOGAN RD)

Over: FINLEY CREEK

4.8 MI W DALTON CITY, Macon, IL

Built 1987 Load: 32.4 t ADT: 75

TR 227(PUBLIC RD)

Over: SPRING CREEK

2 MI W OF BOODY, Macon, IL

Built 1988 Load: 32.4 t ADT: 75

TR 247(DAMERY RD)

Over: MOSQUITO CREEK

3 MI N BLUE MOUND, Macon, IL

Built 1987 Load: 32.4 t ADT: 100

TR 227(PUBLIC RD)

Over: DRAINAGE DITCH

2 MI W OF BOODY, Macon, IL

Built 1988 Load: 32.4 t ADT: 75

TR 296(ILLINI RD)

Over: LONG CREEK

1.7 MI SE OF OAKLEY, Macon, IL

Built 1986 Load: 32.4 t ADT: 50

TR 259A(BETHEL RD)

Over: MOSQUITO CREEK

2 MI NE BLUE MOUND, Macon, IL

Built 1987 Load: 32.4 t ADT: 35

TR 255(MOSQUITO CR

Over: STREAM

2 MI N BLUE MOUND, Macon, IL

Built 1989 Load: 32.4 t ADT: 25

FAS 548 (CH 58)

Over: LAKE FORK CREEK

4 MI W OF MAROA, Macon, IL

Built 1988 Load: 32.4 t ADT: 200

TR 114C(RILEY RD)

Over: LONG GROVE CREEK

3.2 MI SE OF MACON, Macon, IL

Built 1989 Load: 32.4 t ADT: 25

TR 42(NEVADA RD)

Over: MOSQUITO CREEK

3.4 MI NE BLUE MOUND, Macon, IL

Built 1989 Load: 32.4 t ADT: 100

TR 216(MIDWAY RD)

Over: KICKAPOO CREEK

3 MI N OF OREANA, Macon, IL

Built 1989 Load: 32.4 t ADT: 50

TR 57(CABIN RD)

Over: STREAM

4.5 MI SE OF OREANA, Macon, IL

Built 1990 Load: 32.4 t ADT: 225

TR 19(EMERY RD)

Over: STEVENS CREEK

.5 MI W OF EMERY, Macon, IL

Built 1991 Load: 32.4 t ADT: 50

TR 63A(PIN OAK LN)

Over: STREAM

NE OF DECATUR, Macon, IL

Built 1990 Load: 32.4 t ADT: 100

FAS 1547

Over: LONG CREEK

1.4 MI NE LONG CREEK, Macon, IL

Built 1997 Load: 32.4 t ADT: 2,200

TR 30A(STRAWN RD)

Over: DRAINAGE DITCH

3 MI W WARRENSBURG, Macon, IL

Built 1991 Load: 32.4 t ADT: 20

TR 270(CEMETERY RD

Over: FRIENDS CREEK

1 MI E OF ARGENTA, Macon, IL

Built 1991 Load: 32.4 t ADT: 50

TR 31A(JORDAN RD)

Over: FRIENDS CREEK

3 MI SE ARGENTA, Macon, IL

Built 1991 Load: 32.4 t ADT: 125

TR 22

Over: LAKE FORK CREEK

2.3 MI W OF MAROA, Macon, IL

Built 1992 Load: 32.4 t ADT: 25

TR 17

Over: STREAM

4.3 MI NW WARRENSBUR, Macon, IL

Built 1993 Load: 32.4 t ADT: 50

TR 20 A

Over: STREAM

1.2 MI E OF NIANTIC, Macon, IL

Built 1995 Load: 32.4 t ADT: 75

FAS 556 (CH 28)

Over: TRIB SANGAMON RIVER

SW EDGE OF DECATUR, Macon, IL

Built 2000 Load: 32.4 t ADT: 650

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