Madison County, IA

221 public highway bridges

Madison County Bridge Snapshot

Madison County, Iowa contains 221 public highway bridges in the FHWA National Bridge Inventory. Roughly 16.3% are rated “Good,” 45.7% “Fair,” 37.6% “Poor,” and 37.6% 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 IA 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.

221

Total Bridges

16.3%

Good

37.6%

Poor

37.6%

Structurally Deficient

Condition Distribution

Good

16.3% (36)

Fair

45.7% (101)

Poor

37.6% (83)

SD

37.6% (83)

All Bridges (221)

Sort:

LOCAL

Over: HOWERDON CREEK

076292502, Madison, IA

Built 1992 Load: 24.7 t ADT: 11

LOCAL

Over: DRAINAGE

075290202, Madison, IA

Built 1997 Load: 24.9 t ADT: 34

LOCAL

Over: DRAINAGE

077292102, Madison, IA

Built 1959 Load: 24.9 t ADT: 34

IA 92

Over: MIDDLE RIVER

2.0 mi. W of SR P-53, Madison, IA

Built 1967 Load: 25.1 t ADT: 1,130

LOCAL

Over: SMALL STREAM

074271607, Madison, IA

Built 1986 Load: 25.1 t ADT: 45

LOCAL

Over: HOWERDON CREEK

076292701, Madison, IA

Built 1992 Load: 25.2 t ADT: 20

LOCAL

Over: SMALL STREAM

075282903, Madison, IA

Built 1986 Load: 25.3 t ADT: 34

LOCAL RD

Over: DRAINAGE

076280405, Madison, IA

Built 1999 Load: 25.6 t ADT: 45

LOCAL

Over: DRAINAGE

074283001, Madison, IA

Built 1949 Load: 25.9 t ADT: 29

LOCAL

Over: HOWERDON CREEK

076292602, Madison, IA

Built 1984 Load: 25.9 t ADT: 15

LOCAL

Over: TOM CREEK

077292304, Madison, IA

Built 1987 Load: 26.1 t ADT: 11

LOCAL

Over: DRAINAGE

076273505, Madison, IA

Built 1996 Load: 26.4 t ADT: 29

LOCAL

Over: HOWERDON CREEK

076292102, Madison, IA

Built 1987 Load: 26.5 t ADT: 20

LOCAL RD

Over: DRAINAGE

075270103, Madison, IA

Built 1994 Load: 26.6 t ADT: 50

US 169

Over: NORTH RIVER

3.5 MI. N OF N JCT. IA 92, Madison, IA

Built 1969 Load: 26.8 t ADT: 4,280

FM

Over: MIDDLE RIVER

075291306, Madison, IA

Built 1981 Load: 27.1 t ADT: 50

LOCAL

Over: DRAINAGE

075270304, Madison, IA

Built 1959 Load: 27.2 t ADT: 29

US 169

Over: MIDDLE RIVER

2.2 MI. S OF S JCT. IA 92, Madison, IA

Built 1976 Load: 27.2 t ADT: 1,890

LOCAL

Over: DRAINAGE

075291103, Madison, IA

Built 1988 Load: 27.8 t ADT: 71

LOCAL RD

Over: JIM CREEK

077292102, Madison, IA

Built 1991 Load: 28.0 t ADT: 34

LOCAL

Over: GRAND RIVER

074292105, Madison, IA

Built 1979 Load: 28.6 t ADT: 5

LOCAL

Over: DRAINAGE

075291204, Madison, IA

Built 1953 Load: 28.8 t ADT: 60

LOCAL

Over: SMALL

076273603, Madison, IA

Built 1989 Load: 29.2 t ADT: 11

LOCAL

Over: DRAINAGE

074280404, Madison, IA

Built 1991 Load: 29.6 t ADT: 15

FM

Over: DRAINAGE

076270506, Madison, IA

Built 1990 Load: 29.6 t ADT: 89

FM

Over: NORTH BRANCH NORTH RIVER

077282304, Madison, IA

Built 1984 Load: 29.8 t ADT: 60

FM

Over: MIDDLE RIVER

075291006, Madison, IA

Built 1983 Load: 30.5 t ADT: 329

FM

Over: N. FORK CLANTON CREEK

074270703, Madison, IA

Built 1986 Load: 30.6 t ADT: 40

LOCAL

Over: BADGER CREEK

077261604, Madison, IA

Built 1994 Load: 30.7 t ADT: 79

FM

Over: CEDAR CREEK

076260804, Madison, IA

Built 1984 Load: 30.8 t ADT: 60

LOCAL

Over: DRAINAGE DITCH

074290501, Madison, IA

Built 1977 Load: 31.1 t ADT: 45

I-80

Over: DRAINAGE DITCH

1.0 mi. W of Jct. SR P-53, Madison, IA

Built 1959 Load: 32.7 t ADT: 27,600

FM

Over: STREAM

074283507, Madison, IA

Built 1974 Load: 32.7 t ADT: 34

LOCAL

Over: STREAM

074283509, Madison, IA

Built 1974 Load: 32.7 t ADT: 5

FM

Over: DRAINAGE DITCH

074291302, Madison, IA

Built 1984 Load: 32.7 t ADT: 71

FM

Over: SMALL STREAM

075282107, Madison, IA

Built 1986 Load: 32.7 t ADT: 71

S ODELL AVE

Over: STREAM

081900500, Madison, IA

Built 1962 Load: 33.4 t ADT: 235

FM

Over: S FORK CLANTON CREEK

074271506, Madison, IA

Built 1977 Load: 36.9 t ADT: 89

FM

Over: N. BRANCH NORTH RIVER

077272804, Madison, IA

Built 1985 Load: 37.1 t ADT: 50

LOCAL RD

Over: S FORK CLANTON CREEK

074273304, Madison, IA

Built 1989 Load: 37.2 t ADT: 34

LOCAL RD

Over: JONES CREEK

075261904, Madison, IA

Built 1989 Load: 38.5 t ADT: 50

FM

Over: NORTH RIVER

076270506, Madison, IA

Built 1990 Load: 38.7 t ADT: 89

FM

Over: CLANTON CREEK

075262207, Madison, IA

Built 1995 Load: 40.3 t ADT: 1,055

US 169

Over: N BRANCH NORTH RIVER

5.3 mi. S of Jct. SR F90, Madison, IA

Built 1983 Load: 41.2 t ADT: 4,280

FM

Over: MIDDLE RIVER

075270405, Madison, IA

Built 1987 Load: 42.4 t ADT: 139

FM

Over: CEDAR CREEK

076282602, Madison, IA

Built 1989 Load: 45.3 t ADT: 100

FM

Over: BRANCH MIDDLE RIVER

075271904, Madison, IA

Built 1926 Load: 47.9 t ADT: 1,186

FM

Over: JONES CREEK

075272805, Madison, IA

Built 1990 Load: 48.0 t ADT: 170

LOCAL RD

Over: SOUTH RIVER

074263401, Madison, IA

Built 1991 Load: 52.7 t ADT: 79

FM

Over: JONES CREEK

075262109, Madison, IA

Built 1990 Load: 52.9 t ADT: 826

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