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)

FM

Poor

Over: DRAINAGE

074271003, Madison, IA

Built 1951 Load: 14.5 t ADT: 40

FM

Poor

Over: MIDDLE RIVER

075281804, Madison, IA

Built 1935 Load: 14.8 t ADT: 11

FM

Poor

Over: GRAND RIVER

074291703, Madison, IA

Built 1940 Load: 14.9 t ADT: 379

LOCAL RD

Poor

Over: N BR NORTH RIVER

077282204, Madison, IA

Built 1915 Load: 15.1 t ADT: 50

FM

Poor

Over: WATERWAY

077271002, Madison, IA

Built 1955 Load: 15.2 t ADT: 159

FM

Poor

Over: NORTH RIVER

076281006, Madison, IA

Built 1960 Load: 16.0 t ADT: 100

LOCAL RD

Poor

Over: DRAINAGE

074293505, Madison, IA

Built 1978 Load: 16.1 t ADT: 40

FM

Poor

Over: CLANTON CREEK

074281605, Madison, IA

Built 1932 Load: 17.0 t ADT: 477

LOCAL RD

Poor

Over: DRAINAGE

076283301, Madison, IA

Built 1930 Load: 17.0 t ADT: 219

LOCAL RD

Poor

Over: DRAINAGE

077290502, Madison, IA

Built 1940 Load: 17.0 t ADT: 60

FM

Poor

Over: HOWERDON CREEK

076292202, Madison, IA

Built 1972 Load: 17.3 t ADT: 597

LOCAL RD

Poor

Over: S FORK CLANTON CREEK

074283606, Madison, IA

Built 1978 Load: 17.5 t ADT: 34

LOCAL RD

Poor

Over: W BR GRAND RIVER

074293005, Madison, IA

Built 1951 Load: 18.0 t ADT: 20

FM

Poor

Over: JIM CREEK

077291301, Madison, IA

Built 1931 Load: 18.2 t ADT: 71

FM

Poor

Over: WEST BRANCH

074293402, Madison, IA

Built 1957 Load: 18.5 t ADT: 131

FM

Poor

Over: BADGER CREEK

077261504, Madison, IA

Built 1956 Load: 18.5 t ADT: 1,404

FM

Poor

Over: TOM CREEK

077283004, Madison, IA

Built 1954 Load: 18.5 t ADT: 477

LOCAL

Poor

Over: DRAINAGE

075291408, Madison, IA

Built 1938 Load: 19.5 t ADT: 20

LOCAL RD

Poor

Over: NORTH CLANTON CREEK

074280806, Madison, IA

Built 1937 Load: 20.7 t ADT: 60

LOCAL

Poor

Over: DRAINAGE

074271604, Madison, IA

Built 1945 Load: 20.8 t ADT: 29

FM

Poor

Over: DRAINAGE

074293201, Madison, IA

Built 1941 Load: 20.9 t ADT: 20

LOCAL

Poor

Over: SMALL STREAM

076273611, Madison, IA

Built 1982 Load: 21.1 t ADT: 71

FM

Poor

Over: TOM CREEK

077292702, Madison, IA

Built 1962 Load: 21.2 t ADT: 597

LOCAL

Poor

Over: DRAINAGE

075270305, Madison, IA

Built 1952 Load: 21.4 t ADT: 20

LOCAL

Poor

Over: DRAINAGE

075282004, Madison, IA

Built 1948 Load: 21.5 t ADT: 26

CO ENTRANCE

Poor

Over: DRAINAGE

00000, Madison, IA

Built 1972 Load: 21.5 t ADT: 11

FM

Poor

Over: DRAINAGE

075282203, Madison, IA

Built 1975 Load: 21.6 t ADT: 180

FM

Poor

Over: DRAINAGE

077271501, Madison, IA

Built 1960 Load: 21.9 t ADT: 40

LOCAL

Poor

Over: DRAINAGE

076293602, Madison, IA

Built 1960 Load: 22.0 t ADT: 26

LOCAL

Poor

Over: DRAINAGE

077280202, Madison, IA

Built 1955 Load: 22.0 t ADT: 131

FM

Poor

Over: FIELD DRAINAGE DITCH

074261601, Madison, IA

Built 1951 Load: 22.2 t ADT: 417

LOCAL RD

Poor

Over: SMALL

075291205, Madison, IA

Built 1976 Load: 22.4 t ADT: 60

LOCAL RD

Poor

Over: CEDAR CREEK

076282902, Madison, IA

Built 1952 Load: 22.8 t ADT: 29

LOCAL

Poor

Over: JIM CREEK

077291402, Madison, IA

Built 1981 Load: 22.8 t ADT: 20

LOCAL

Poor

Over: DRAINAGE

075262809, Madison, IA

Built 1952 Load: 23.8 t ADT: 15

LOCAL

Poor

Over: DRAINAGE

077271602, Madison, IA

Built 1940 Load: 24.1 t ADT: 90

LOCAL

Poor

Over: DRAINAGE

077261103, Madison, IA

Built 1967 Load: 24.4 t ADT: 11

FM

Poor

Over: DRAINAGE

074270803, Madison, IA

Built 1930 Load: 26.5 t ADT: 40

FM

Poor

Over: OVER-FLOW-NORTH RIVER

077263102, Madison, IA

Built 1970 Load: 26.6 t ADT: 880

LOCAL

Poor

Over: DRAINAGE

076290402, Madison, IA

Built 1952 Load: 28.8 t ADT: 15

LOCAL

Poor

Over: WATERWAY

077270303, Madison, IA

Built 1950 Load: 30.2 t ADT: 40

LOCAL

Poor

Over: DRAINAGE

074260501, Madison, IA

Built 1981 Load: 30.3 t ADT: 45

FM

Poor

Over: JIM CREEK

077290306, Madison, IA

Built 1972 Load: 30.4 t ADT: 597

FM

Poor

Over: JONES CREEK

075273102, Madison, IA

Built 1929 Load: 99.9 t ADT: 788

GRANDVIEW TRL

Structurally Deficient

Over: N CLANTON CREEK

074283505, Madison, IA

Built 1895 ADT: 5

LOCAL RD

Structurally Deficient

Over: N FORK CLANTON CREEK

074280906, Madison, IA

Built 1900 ADT: 15

FM

Structurally Deficient

Over: CLANTON CREEK

075261202, Madison, IA

Built 1932 ADT: 450

FM

Structurally Deficient

Over: OVERFLOW CLANTON CREEK

075261202, Madison, IA

Built 1932 ADT: 450

LOCAL RD

Structurally Deficient

Over: NORTH RIVER

076291104, Madison, IA

Built 1909 ADT: 26

LOCAL

Structurally Deficient

Over: BADGER CREEK

077262401, Madison, IA

Built 1890 ADT: 40

Read our methodology — how this data is sourced, computed, and verified.

Related

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