Cass County, IA

237 public highway bridges

Cass County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Cass County, Iowa contains 237 public highway bridges. Roughly 22.4% are rated “Good,” 36.3% “Fair,” and 39.7% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

237
Total Bridges
22.4%
Good
36.3%
Fair
39.7%
Poor Condition

Condition Distribution

Good
22.4% (53)
Fair
36.3% (86)
Poor
39.7% (94)

All Bridges (237)

FM - 660TH

Poor

Over: JIM CREEK

076351902, Cass, IA

Built 1956 ADT: 34

LOCAL

Poor

Over: WATERWAY

076371901, Cass, IA

Built 1955 ADT: 26

LOCAL/EASTLAND

Poor

Over: BUCK CREEK

077363001, Cass, IA

Built 1974 ADT: 26

LOCAL/BUCK CRK

Poor

Over: EAST NISHNABOTNA RIVER

077363206, Cass, IA

Built 1900 ADT: 123

LOCAL/FAIRVIEW

Poor

Over: CREEK

077373601, Cass, IA

Built 1959 ADT: 21

LOCAL - 700TH

Poor

Over: TRIB TROUBLESOME CREEK

077351402, Cass, IA

Built 1983 Load: 2.7 t ADT: 11

LOCAL - DAYTONA

Poor

Over: BUCK CREEK

077361903, Cass, IA

Built 1980 Load: 2.7 t ADT: 35

LOCAL - 570TH

Poor

Over: WATERWAY

074371002, Cass, IA

Built 1955 Load: 3.2 t ADT: 30

FM - JACKSON

Poor

Over: WATERWAY

076361406, Cass, IA

Built 1985 Load: 3.4 t ADT: 139

LOCAL - SEATTLE

Poor

Over: WATERWAY

074370605, Cass, IA

Built 1978 Load: 3.7 t ADT: 35

LOCAL - CHICAGO

Poor

Over: BUCK CREEK

077361801, Cass, IA

Built 1900 Load: 4.0 t ADT: 30

LOCAL

Poor

Over: CLARKS CREEK

074373204, Cass, IA

Built 1966 Load: 4.2 t ADT: 5

LOCAL/KEYSTONE

Poor

Over: CREEK

076342801, Cass, IA

Built 1900 Load: 5.3 t ADT: 26

LOCAL - 740TH

Poor

Over: CREEK

076343302, Cass, IA

Built 1900 Load: 7.2 t ADT: 26

NEWPORT RD

Poor

Over: BEAR BRANCH

075360702, Cass, IA

Built 1984 Load: 7.8 t ADT: 15

LOCAL - AKRON

Poor

Over: TROUBLESOME CREEK

077350203, Cass, IA

Built 1900 Load: 7.9 t ADT: 5

LOCAL/KEYSTONE

Poor

Over: TURKEY CREEK

076362701, Cass, IA

Built 1900 Load: 9.4 t ADT: 35

LOCAL/KEYSTONE

Poor

Over: SPRING CREEK

076372701, Cass, IA

Built 1900 Load: 9.6 t ADT: 15

FM - HIGHLAND

Poor

Over: INDIAN CREEK

076370801, Cass, IA

Built 1959 Load: 9.8 t ADT: 278

LOCAL - 740TH

Poor

Over: WEST NODAWAY RIVER

075343302, Cass, IA

Built 1978 Load: 9.9 t ADT: 51

LOCAL - QUINCY

Poor

Over: WATERWAY

075342801, Cass, IA

Built 1967 Load: 10.6 t ADT: 30

LOCAL - 700TH

Poor

Over: WATERWAY

075352302, Cass, IA

Built 1967 Load: 11.3 t ADT: 46

FM - 730TH

Poor

Over: ELM CREEK

074340802, Cass, IA

Built 1956 Load: 11.8 t ADT: 45

LOCAL - 710TH

Poor

Over: WATERWAY

075352502, Cass, IA

Built 1955 Load: 11.9 t ADT: 11

LOCAL/FAIRVIEW

Poor

Over: STREAM

077373603, Cass, IA

Built 1979 Load: 12.2 t ADT: 15

LOCAL - 660TH

Poor

Over: STREAM

074353104, Cass, IA

Built 1981 Load: 12.5 t ADT: 5

LOCAL - 555TH

Poor

Over: CAMP CREEK

076370504, Cass, IA

Built 1976 Load: 13.1 t ADT: 21

LOCAL - MEMPHIS

Poor

Over: TURKEY CR

075360602, Cass, IA

Built 1900 Load: 13.2 t ADT: 5

LOCAL - NSHNA V

Poor

Over: INDIAN CREEK

075370803, Cass, IA

Built 1920 Load: 13.2 t ADT: 26

LOCAL - CHICAGO

Poor

Over: CREEK

077371501, Cass, IA

Built 1977 Load: 13.7 t ADT: 15

FM - 710TH

Poor

Over: WATERWAY

076350106, Cass, IA

Built 1955 Load: 14.0 t ADT: 50

LOCAL - UPLAND

Poor

Over: SEVEN MILE CREEK

074361701, Cass, IA

Built 1976 Load: 14.4 t ADT: 15

LOCAL - HAMBURG

Poor

Over: TURKEY CREEK

076350903, Cass, IA

Built 1974 Load: 14.5 t ADT: 62

LOCAL - JASPER

Poor

Over: NISHNABOTNA RIVER

076372303, Cass, IA

Built 1959 Load: 14.6 t ADT: 46

AKRON RD

Poor

Over: STREAM

077340401, Cass, IA

Built 1978 Load: 15.0 t ADT: 11

LOCAL - 640TH

Poor

Over: CREEK

077363508, Cass, IA

Built 1977 Load: 15.0 t ADT: 15

LOCAL - 680TH

Poor

Over: WATERWAY

076352104, Cass, IA

Built 1976 Load: 15.1 t ADT: 11

LOCAL - WICHITA

Poor

Over: SEVEN MILE CREEK

074362901, Cass, IA

Built 1978 Load: 15.2 t ADT: 11

LOCAL/NEWPORT

Poor

Over: CREEK

075351203, Cass, IA

Built 1959 Load: 15.2 t ADT: 26

LOCAL - QUEBEC

Poor

Over: SEVEN MILE CREEK

075352903, Cass, IA

Built 1981 Load: 15.6 t ADT: 26

LOCAL - 100TH

Poor

Over: CREEK

077370601, Cass, IA

Built 1900 Load: 15.8 t ADT: 11

LOCAL/ROCKPORT

Poor

Over: WATERWAY

075343203, Cass, IA

Built 1900 Load: 15.9 t ADT: 89

FM - LANSING

Poor

Over: WATERWAY

076363401, Cass, IA

Built 1900 Load: 17.0 t ADT: 379

LOCAL - UPLAND

Poor

Over: WATERWAY

074371603, Cass, IA

Built 1983 Load: 17.1 t ADT: 26

FM - 660TH

Poor

Over: LONE TREE CREEK

075350602, Cass, IA

Built 1900 Load: 17.1 t ADT: 29

LOCAL - 680TH

Poor

Over: SEVEN MILE CREEK

075352102, Cass, IA

Built 1979 Load: 17.1 t ADT: 15

LOCAL/BUCK CRK

Poor

Over: WATERWAY

077362002, Cass, IA

Built 1967 Load: 17.1 t ADT: 41

FM - BOSTON

Poor

Over: NISHNABOTNA RIVER

077361205, Cass, IA

Built 1951 Load: 17.5 t ADT: 131

FM - YANKTON

Poor

Over: NODAWAY RIVER

074353101, Cass, IA

Built 1949 Load: 17.6 t ADT: 34

LOCAL - 700TH

Poor

Over: TURKEY CREEK

076350204, Cass, IA

Built 1978 Load: 17.6 t ADT: 21

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

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.