Mills County, IA

170 public highway bridges

Mills County Bridge Snapshot

Mills County, Iowa contains 170 public highway bridges in the FHWA National Bridge Inventory. Roughly 23.5% are rated “Good,” 48.2% “Fair,” 20.6% “Poor,” and 20.6% 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.

170

Total Bridges

23.5%

Good

20.6%

Poor

20.6%

Structurally Deficient

Condition Distribution

Good

23.5% (40)

Fair

48.2% (82)

Poor

20.6% (35)

SD

20.6% (35)

All Bridges (170)

Sort:

WB US 34

Over: PONY CREEK

1.4 MI. E OF E JCT. 29, Mills, IA

Built 1973 Load: 31.5 t ADT: 5,850

NB I-29

Over: KEG CREEK

0.7 MI. S OF S JCT. US 34, Mills, IA

Built 1971 Load: 32.5 t ADT: 6,850

LOCUST STREET

Over: TINKLE BRANCH

000000000, Mills, IA

Built 1976 Load: 32.7 t ADT: 8,957

SHARP STREET

Over: SMALL STREAM

000000000, Mills, IA

Built 1960 Load: 32.7 t ADT: 3,979

284TH STREET

Over: SILVER CREEK BRANCH

072420202, Mills, IA

Built 1959 Load: 32.7 t ADT: 568

LCL-RAINS AVE

Over: DRAINAGE

071413501, Mills, IA

Built 1964 Load: 32.7 t ADT: 11

LCL-340TH ST

Over: LOCAL CREEK

071413502, Mills, IA

Built 1968 Load: 32.7 t ADT: 5

FM-390TH ST

Over: DOUGLAS CREEK

072401502, Mills, IA

Built 1979 Load: 32.7 t ADT: 89

FA-JAMISON ROAD

Over: DRAINAGE

072402107, Mills, IA

Built 1993 Load: 32.7 t ADT: 349

LCL-302ND ST

Over: OSBORN CREEK

072410604, Mills, IA

Built 1979 Load: 32.7 t ADT: 34

KIDD ROAD

Over: SMALL STREAM

072421806, Mills, IA

Built 1985 Load: 32.7 t ADT: 270

LCL-240TH ST

Over: SMALL STREAM

072431208, Mills, IA

Built 1987 Load: 32.7 t ADT: 120

LCL-KANE AVE

Over: DRAINAGE

072433001, Mills, IA

Built 1970 Load: 32.7 t ADT: 26

LCL-COMPASS AVE

Over: ROAD DITCH DRAINAGE

073401507, Mills, IA

Built 1964 Load: 32.7 t ADT: 5

LCL-APPLEWOOD

Over: STREAM

073410301, Mills, IA

Built 1988 Load: 32.7 t ADT: 15

LCL-307TH ST

Over: STREAM

073411906, Mills, IA

Built 1967 Load: 32.7 t ADT: 11

LCL-DONNER AVE

Over: STREAM

073412303, Mills, IA

Built 1970 Load: 32.7 t ADT: 26

LCL-345TH ST

Over: STREAM

073412306, Mills, IA

Built 1998 Load: 32.7 t ADT: 26

LCL-EPPERSON AV

Over: CREEK

073413005, Mills, IA

Built 1968 Load: 32.7 t ADT: 20

FA-BARRUS RD

Over: SNAKE CREEK

073420903, Mills, IA

Built 1998 Load: 32.7 t ADT: 358

LCL-QUIGG AV

Over: WAUBONSIE CREEK

071432507, Mills, IA

Built 1976 Load: 32.7 t ADT: 26

SHARP STREET

Over: KEG CREEK

000000000, Mills, IA

Built 1960 Load: 33.0 t ADT: 3,979

FM-360TH ST

Over: DEER CREEK

071403002, Mills, IA

Built 1979 Load: 33.5 t ADT: 110

LCL-RIST AVE

Over: CREEK

071433403, Mills, IA

Built 1972 Load: 33.7 t ADT: 15

LCL-250TH ST

Over: MILLER CREEK

072420502, Mills, IA

Built 1978 Load: 34.3 t ADT: 45

FM-KANE AV

Over: KEG CREEK

072432703, Mills, IA

Built 2004 Load: 34.6 t ADT: 190

FA-BROTHERS AVE

Over: MUD CREEK

073411001, Mills, IA

Built 1978 Load: 34.6 t ADT: 131

SB I-29

Over: BNSF RR & EATON DITCH

0.8 MI N OF S JCT. US 34, Mills, IA

Built 1970 Load: 34.8 t ADT: 6,800

FA-BROTHERS AVE

Over: BOX ELDER CREEK

073411103, Mills, IA

Built 1985 Load: 34.9 t ADT: 131

FM-HUTCHINGS AV

Over: RAINES BRANCH

072411001, Mills, IA

Built 1954 Load: 35.0 t ADT: 45

NB I-29

Over: BNSF RR & EATON DITCH

0.8 MI N OF S JCT. US 34, Mills, IA

Built 1970 Load: 36.3 t ADT: 6,800

EB US 34

Over: BNSF RR

0.5 MI E OF E JCT I-29, Mills, IA

Built 1973 Load: 37.4 t ADT: 5,900

BARRUS RD

Over: SNAKE CREEK

073420807, Mills, IA

Built 1978 Load: 37.6 t ADT: 358

US 34

Over: DRAINAGE DITCH

1.3 mi. E of jct. SR L63, Mills, IA

Built 1964 Load: 38.4 t ADT: 4,260

FA-250TH ST

Over: KEG CREEK

073421704, Mills, IA

Built 1974 Load: 38.5 t ADT: 577

FM-EPPERSON AV

Over: KEG CREEK

073423001, Mills, IA

Built 1971 Load: 38.5 t ADT: 29

NB I-29

Over: HAYNIE SLOUGH

2.4 MI. S OF S JCT. US 34, Mills, IA

Built 1971 Load: 38.6 t ADT: 6,850

MAHAFFEY RD

Over: DRAINAGE

072433608, Mills, IA

Built 2006 Load: 39.0 t ADT: 100

WB US 34

Over: BNSF RR

0.5 MI E OF E JCT I-29, Mills, IA

Built 1973 Load: 40.4 t ADT: 5,900

SB I-29

Over: HAYNIE SLOUGH

2.4 mi. S of S jct. US 34, Mills, IA

Built 1971 Load: 41.3 t ADT: 6,850

SB I-29

Over: KEG CREEK

0.7 MI. S OF S JCT. US 34, Mills, IA

Built 1971 Load: 43.3 t ADT: 6,850

US 34

Over: INDIAN CREEK

0.1 MI. W OF W JCT SR M16, Mills, IA

Built 1989 Load: 44.4 t ADT: 4,260

EB US 34

Over: KEG CREEK

0.2 mi. E of jct. SR L35, Mills, IA

Built 1969 Load: 50.2 t ADT: 3,650

LCL-DEACON ROAD

Over: PONY CREEK

072430918, Mills, IA

Built 1992 Load: 51.0 t ADT: 278

US 34

Over: DRAINAGE DITCH

0.7 MI. W of Jct. SR L63, Mills, IA

Built 1964 Load: 82.4 t ADT: 4,260

LCL-307TH ST

Over: CREEK

073413108, Mills, IA

Built 1998 Load: 25.1 t ADT: 5

FA-BROTHERS AVE

Over: NISHNABOTNA RIVER

073400901, Mills, IA

Built 1986 Load: 29.1 t ADT: 349

WB US 34

Over: KEG CREEK

0.2 mi. E of jct. SR L35, Mills, IA

Built 1969 Load: 30.6 t ADT: 3,650

FM-KEYS AVE

Over: SILVER CREEK

072413005, Mills, IA

Built 1978 Load: 30.8 t ADT: 120

330TH ST

Over: NISHNABOTNA RIVER

071411502, Mills, IA

Built 2015 Load: 32.4 t ADT: 329

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