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:

190TH ST

Over: BNSF RR

000000000, Mills, IA

Built 2019 Load: 32.4 t ADT: 133

US 34

Over: SILVER CREEK

1.3 mi. W of Jct. SR L-63, Mills, IA

Built 1965 Load: 32.5 t ADT: 6,000

221ST STREET

Over: PONY CREEK

073432204, Mills, IA

Built 1995 Load: 32.7 t ADT: 2,649

LCL-QUEEN AVE

Over: HUNTERS BRANCH

071402601, Mills, IA

Built 1991 Load: 32.7 t ADT: 34

300TH ST

Over: SPRING VALLEY CREEK

071413102, Mills, IA

Built 2010 Load: 32.7 t ADT: 26

FM-195TH ST

Over: HAYNIE SLOUGH

071430806, Mills, IA

Built 1988 Load: 32.7 t ADT: 240

MASTERS RD

Over: STREAM

072423111, Mills, IA

Built 2012 Load: 32.7 t ADT: 60

MONTAGUE RD

Over: WAUBONSIE CR

072423304, Mills, IA

Built 2016 Load: 32.7 t ADT: 29

FA-370TH ST

Over: STREAM

073402902, Mills, IA

Built 1992 Load: 32.7 t ADT: 210

FM-195TH ST

Over: ST MARY'S DITCH

073430806, Mills, IA

Built 1995 Load: 32.7 t ADT: 1,247

I-29

Over: FULSOM LAKE OUTLET

1.7 mi. N of N jct. US 34, Mills, IA

Built 2010 Load: 32.7 t ADT: 19,700

M16 370TH ST

Over: NISHNABOTNA RIVER

073402904, Mills, IA

Built 2018 Load: 34.3 t ADT: 210

221ST STREET

Over: OVER BNSF RR

072433304, Mills, IA

Built 2008 Load: 34.7 t ADT: 847

190TH ST

Over: STREAM

072432902, Mills, IA

Built 2018 Load: 35.6 t ADT: 131

FA-360TH ST

Over: INDIAN CREEK

072401904, Mills, IA

Built 1998 Load: 35.8 t ADT: 399

HAZEL ST

Over: KEG CREEK

000000000, Mills, IA

Built 2009 Load: 36.0 t ADT: 1,704

NB I-29

Over: PONY CREEK

0.7 MILE N OF S JCT US 34, Mills, IA

Built 2011 Load: 36.9 t ADT: 6,800

SB I-29

Over: PONY CREEK

0.7 MILE N OF S JCT US 34, Mills, IA

Built 2010 Load: 36.9 t ADT: 6,800

FA-245TH ST

Over: KEG CREEK

072420606, Mills, IA

Built 2003 Load: 37.6 t ADT: 1,425

FM-APPLEWOOD

Over: KEG CREEK

073420503, Mills, IA

Built 1996 Load: 37.6 t ADT: 71

FA-JAMISON ROAD

Over: INDIAN CREEK

072402409, Mills, IA

Built 1994 Load: 37.9 t ADT: 428

LCL-CARY AVE

Over: FARM CREEK

073401403, Mills, IA

Built 2007 Load: 38.5 t ADT: 60

FA-GASTON AVE

Over: SILVER CREEK

072420103, Mills, IA

Built 1991 Load: 38.8 t ADT: 139

LCL-BROTHERS AV

Over: KEG CREEK

073420801, Mills, IA

Built 1992 Load: 38.8 t ADT: 71

US 59

Over: FARM CREEK

0.8 MI. S OF Jct. SR H12, Mills, IA

Built 1995 Load: 41.5 t ADT: 940

LCL-APPLEWOOD

Over: MUD CREEK

073410201, Mills, IA

Built 1990 Load: 41.8 t ADT: 15

LAMBERT AVE

Over: PONY CREEK

0.5 MI. W OF W JCT I-29, Mills, IA

Built 1931 Load: 44.1 t ADT: 468

NB I-29

Over: DRAINAGE DITCH

4.3 mi. S of S Jct. US 34, Mills, IA

Built 2009 Load: 44.9 t ADT: 6,850

SB I-29

Over: ST MARYS CREEK

0.9 mi. S of Jct. IA 370, Mills, IA

Built 2009 Load: 44.9 t ADT: 9,850

QUANDT RD

Over: WAUBONSIE CREEK

071432503, Mills, IA

Built 2014 Load: 45.3 t ADT: 34

LCL-DEACON RD

Over: PONY CREEK

072430918, Mills, IA

Built 1992 Load: 51.0 t ADT: 278

H38 LAMBERT AVE

Over: NISHNABOTNA

072413501, Mills, IA

Built 2012 Load: 53.5 t ADT: 289

LCL-370TH ST

Over: DEER CREEK

071402002, Mills, IA

Built 2005 Load: 54.2 t ADT: 15

LCL-370TH ST

Over: DEER CREEK

071402002, Mills, IA

Built 2005 Load: 56.7 t ADT: 15

LCL-COMPASS AVE

Over: STREAM

073411403, Mills, IA

Built 2000 Load: 82.9 t ADT: 11

LCL-QUIGG AVE

Over: SPRING VALLEY CR

071422605, Mills, IA

Built 1940 Load: 6.9 t ADT: 11

LCL-FRY AVE

Over: MUD CREEK

073413605, Mills, IA

Built 1940 Load: 7.5 t ADT: 26

LCL-400TH ST

Over: INDIAN CREEK

072401102, Mills, IA

Built 1940 Load: 8.0 t ADT: 26

LCL-400TH ST

Over: HUNTERS BRANCH

071402602, Mills, IA

Built 1965 Load: 8.3 t ADT: 26

LCL-INGRAHAM AV

Over: STREAM

072401501, Mills, IA

Built 1954 Load: 9.8 t ADT: 5

LCL-ELDERBERRY

Over: MUD CREEK

073412505, Mills, IA

Built 1960 Load: 10.0 t ADT: 60

FM-PADDOCK RD

Over: LOCAL CREEK

071432103, Mills, IA

Built 1970 Load: 12.4 t ADT: 71

LCL-RIST AVE

Over: DRAINAGE

071433403, Mills, IA

Built 1961 Load: 14.1 t ADT: 15

LCL-380TH ST

Over: INDIAN CREEK

072402108, Mills, IA

Built 1964 Load: 14.9 t ADT: 50

LCL-400TH ST

Over: INDIAN CREEK

072402602, Mills, IA

Built 1957 Load: 15.1 t ADT: 50

FM-397TH ST

Over: FARM CREEK

073401504, Mills, IA

Built 1959 Load: 18.1 t ADT: 34

FA-PADDOCK AVE

Over: HUNTERS BRANCH

071402301, Mills, IA

Built 1962 Load: 22.7 t ADT: 51

FA-GASTON AVE

Over: DRAINAGE

072410605, Mills, IA

Built 1951 Load: 24.3 t ADT: 139

FA-BARRUS RD

Over: KEG CREEK

073420839, Mills, IA

Built 1951 Load: 25.9 t ADT: 698

LCL-MERRILL RD

Over: DRAINAGE

071410104, Mills, IA

Built 1964 Load: 26.7 t ADT: 50

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

Related

Browse all → | Rankings →

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