Montgomery County, IA

184 public highway bridges

Montgomery County Bridge Snapshot

Montgomery County, Iowa contains 184 public highway bridges in the FHWA National Bridge Inventory. Roughly 20.1% are rated “Good,” 52.7% “Fair,” 26.6% “Poor,” and 26.6% 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.

184

Total Bridges

20.1%

Good

26.6%

Poor

26.6%

Structurally Deficient

Condition Distribution

Good

20.1% (37)

Fair

52.7% (97)

Poor

26.6% (49)

SD

26.6% (49)

All Bridges (184)

Sort:

US 71

Over: US 34

AT JCT. OF US 34, Montgomery, IA

Built 1971 ADT: 2,670

FM

Over: WEST NODAWAY TRIB

072361101, Montgomery, IA

Built 1959 Load: 10.0 t ADT: 50

LOCAL

Over: WALNUT CREEK

073382001, Montgomery, IA

Built 1957 Load: 10.0 t ADT: 60

FM

Over: WEST NODAWAY TRIB

073363306, Montgomery, IA

Built 1961 Load: 14.2 t ADT: 11

LOCAL ROAD

Over: WALNUT CREEK

073380401, Montgomery, IA

Built 1967 Load: 15.9 t ADT: 26

LOCAL

Over: INDIAN CREEK

073391703, Montgomery, IA

Built 1997 Load: 16.2 t ADT: 15

LOCAL ROAD

Over: ASHBY CREEK

071382901, Montgomery, IA

Built 1975 Load: 16.8 t ADT: 11

LOCAL

Over: MINOR DRAINAGE

073360609, Montgomery, IA

Built 1966 Load: 16.8 t ADT: 20

FM

Over: WEST NODAWAY

073362803, Montgomery, IA

Built 1957 Load: 17.1 t ADT: 29

FM

Over: INDIAN CREEK TRIB

073392202, Montgomery, IA

Built 1957 Load: 18.0 t ADT: 131

IA 48

Over: STREAM

0.2 MI. S OF JCT. IA 34, Montgomery, IA

Built 1931 Load: 18.1 t ADT: 7,600

LOCAL ROAD

Over: LITTLE TARKIO CREEK

072372301, Montgomery, IA

Built 1960 Load: 18.8 t ADT: 15

LOCAL

Over: SEVEN MILE CREEK

073361704, Montgomery, IA

Built 1983 Load: 18.8 t ADT: 11

LOCAL RD

Over: INDIAN CREEK

072390501, Montgomery, IA

Built 1971 Load: 19.0 t ADT: 15

LOCAL ROAD

Over: TARKIO CREEK

071370401, Montgomery, IA

Built 1961 Load: 19.2 t ADT: 29

LOCAL ROAD

Over: LOCAL CREEK

072360102, Montgomery, IA

Built 1998 Load: 19.2 t ADT: 15

FM

Over: TARKIO CREEK

073372801, Montgomery, IA

Built 1959 Load: 19.2 t ADT: 45

LOCAL

Over: WALNUT CREEK

073382002, Montgomery, IA

Built 1984 Load: 19.4 t ADT: 26

US 34

Over: TARKIO RIVER

0.7 mi. W of jct. SR M-63, Montgomery, IA

Built 1964 Load: 19.8 t ADT: 3,990

LOCAL RD

Over: MINOR DRAINAGE

073370503, Montgomery, IA

Built 1998 Load: 19.9 t ADT: 26

LOCAL

Over: NODAWAY TRIB

071361206, Montgomery, IA

Built 1961 Load: 20.2 t ADT: 26

LOCAL

Over: LOCAL CREEK

071373304, Montgomery, IA

Built 1992 Load: 20.2 t ADT: 34

COUNTY ROAD

Over: BRANCH TARKIO CREEK

071372005, Montgomery, IA

Built 1959 Load: 20.9 t ADT: 11

FM

Over: LITTLE TARKIO

071381201, Montgomery, IA

Built 1959 Load: 21.0 t ADT: 71

LOCAL

Over: RAMA CREEK

071383106, Montgomery, IA

Built 1972 Load: 21.0 t ADT: 20

FM

Over: NISHNABOTNA TRIB

071392406, Montgomery, IA

Built 1968 Load: 21.0 t ADT: 41

LOCAL

Over: LOCAL CK

072361102, Montgomery, IA

Built 1979 Load: 21.0 t ADT: 20

LOCAL

Over: TARKIO CREEK

072370901, Montgomery, IA

Built 1971 Load: 21.0 t ADT: 89

LOCAL

Over: CRABAPPLE CREEK

072390303, Montgomery, IA

Built 1984 Load: 21.0 t ADT: 29

LOCAL

Over: CRABAPPLE CREEK

072391001, Montgomery, IA

Built 1968 Load: 21.0 t ADT: 20

LOCAL

Over: CRABAPPLE CREEK

072391501, Montgomery, IA

Built 1979 Load: 21.0 t ADT: 11

LOCAL

Over: SIN CR

073362602, Montgomery, IA

Built 1974 Load: 21.0 t ADT: 20

LOCAL

Over: SEVEN MILE CREEK

073362907, Montgomery, IA

Built 1972 Load: 21.0 t ADT: 29

FM

Over: TARKIO CREEK

073373405, Montgomery, IA

Built 1957 Load: 21.0 t ADT: 15

LOCAL

Over: NISHNABOTNA TRIB

073382508, Montgomery, IA

Built 1974 Load: 21.0 t ADT: 79

LOCAL

Over: CRABAPPLE CREEK

073392301, Montgomery, IA

Built 1968 Load: 21.0 t ADT: 29

LOCAL

Over: INDIAN CREEK TRIB

073392801, Montgomery, IA

Built 1971 Load: 21.0 t ADT: 26

FM

Over: INDIAN CREEK TRIB

073393301, Montgomery, IA

Built 1957 Load: 21.1 t ADT: 26

LOCAL

Over: TARKIO CREEK

072372301, Montgomery, IA

Built 1958 Load: 21.3 t ADT: 15

LOCAL RD

Over: LITTLE TARKIO CREEK

072382401, Montgomery, IA

Built 1957 Load: 21.3 t ADT: 34

LOCAL

Over: NISHNABOTNA TRIB

071392401, Montgomery, IA

Built 1965 Load: 22.1 t ADT: 51

LOCAL

Over: LITTLE TARKIO

071382301, Montgomery, IA

Built 1967 Load: 22.3 t ADT: 50

LOCAL

Over: TARKIO CR

072372101, Montgomery, IA

Built 1974 Load: 22.3 t ADT: 26

LOCAL

Over: INDIAN CREEK

072391804, Montgomery, IA

Built 1968 Load: 22.3 t ADT: 20

FM

Over: NISHNABOTNA TRIB

073382603, Montgomery, IA

Built 1959 Load: 22.3 t ADT: 120

LOCAL

Over: CRABAPPLE CREEK

073391302, Montgomery, IA

Built 1967 Load: 22.3 t ADT: 34

FM

Over: OVER BNSF RR

071362003, Montgomery, IA

Built 1966 Load: 22.6 t ADT: 300

US 71

Over: LONG BRANCH CREEK

3.4 mi. N of N jct. H34, Montgomery, IA

Built 1970 Load: 22.7 t ADT: 1,390

BROAD AVE

Over: SMALL STREAM

071370408, Montgomery, IA

Built 1949 Load: 23.0 t ADT: 699

FM

Over: SIN CREEK

073362301, Montgomery, IA

Built 1959 Load: 24.3 t ADT: 45

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 6, 2026