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)

Sort:

I 80 EB

Over: US 71 & BIKE TRAIL

AT JCT. U.S. 71, Cass, IA

Built 2009 ADT: 1,355

EB I-80

Over: SR N-28

AT JCT. SR N-28, Cass, IA

Built 1959 ADT: 95

740TH ST

Over: I-80

1.0 MI. W OF IA 148, Cass, IA

Built 1958 ADT: 22,500

EB I-80

Over: 770TH STREET

1.7 MI. E OF IA 148, Cass, IA

Built 1958 ADT: 8

IA 83

Over: COMPTON CREEK

0.1 mi. W of jct. SR M56, Cass, IA

Built 1936 ADT: 760

LOCAL - CR CRK

Over: CROOKED CREEK

077351204, Cass, IA

Built 1977 Load: 9.0 t ADT: 11

LOCAL - 640TH

Over: CREEK

075363502, Cass, IA

Built 1900 Load: 9.1 t ADT: 30

LOCAL - 650TH

Over: W NODAWAY RIVER

074363604, Cass, IA

Built 1973 Load: 12.5 t ADT: 50

FM - DALLAS

Over: TROUBLESOME RIVER

077352101, Cass, IA

Built 1959 Load: 14.8 t ADT: 20

COLD SPR ST PK

Over: STREAM

1.9 mi. S of US 6 on M-56, Cass, IA

Built 1900 Load: 15.3 t

LOCAL - YORK

Over: THREE MILE CREEK

074363503, Cass, IA

Built 1982 Load: 16.8 t ADT: 72

LOCAL - 680TH

Over: CREEK

075352804, Cass, IA

Built 1981 Load: 16.8 t ADT: 11

FM - 710TH

Over: WATERWAY

075350102, Cass, IA

Built 1900 Load: 17.1 t ADT: 15

FM - HIGHLAND

Over: EAST NISHNABOTNA

076360621, Cass, IA

Built 1959 Load: 17.4 t ADT: 329

FM - 710TH

Over: WATERWAY

077353604, Cass, IA

Built 1966 Load: 17.8 t ADT: 71

540TH ST

Over: STREAM

074370706, Cass, IA

Built 1984 Load: 19.0 t ADT: 50

LOCAL/RICHLAND

Over: SMALL

075373201, Cass, IA

Built 2008 Load: 19.0 t ADT: 26

NISHNA ST

Over: SMALL CREEK

000000000, Cass, IA

Built 1983 Load: 20.1 t ADT: 101

LOCAL - FAYETTE

Over: INDIAN CREEK

077373203, Cass, IA

Built 1974 Load: 20.2 t ADT: 26

LOCAL - UPLAND

Over: THREEMILE CREEK

074361303, Cass, IA

Built 1996 Load: 20.5 t ADT: 15

LOCAL - 765TH

Over: WEST NODAWAY CREEK

075342402, Cass, IA

Built 1976 Load: 21.2 t ADT: 15

LOCAL - 740TH

Over: STALE BRANCH

074343302, Cass, IA

Built 1948 Load: 21.6 t ADT: 5

LOCAL ROAD

Over: WATERWAY

075342302, Cass, IA

Built 1990 Load: 21.6 t ADT: 15

LOCAL/VICTORIA

Over: THREE MILE CREEK

074362303, Cass, IA

Built 1976 Load: 22.1 t ADT: 41

LOCAL - 740TH

Over: CROOKED CREEK

077340402, Cass, IA

Built 1984 Load: 22.3 t ADT: 145

INDEPENDENCE RD

Over: CREEK

076371501, Cass, IA

Built 2005 Load: 22.5 t ADT: 5

LOCAL - 740TH

Over: ELM CREEK

074341602, Cass, IA

Built 1984 Load: 22.7 t ADT: 62

LOCAL - WICHITA

Over: SMALL CREEK

074342701, Cass, IA

Built 1986 Load: 22.7 t ADT: 15

LOCAL - UPLAND

Over: SMALL STREAM

074371501, Cass, IA

Built 1986 Load: 22.7 t ADT: 11

700TH ST

Over: CREEK

075351104, Cass, IA

Built 2014 Load: 22.7 t ADT: 5

LOCAL - 570TH

Over: WATERWAY

075373402, Cass, IA

Built 1988 Load: 22.7 t ADT: 15

LOCAL

Over: SEVENMILE CREEK

076341501, Cass, IA

Built 2006 Load: 22.7 t ADT: 51

700TH ST

Over: CREEK

076351404, Cass, IA

Built 2020 Load: 22.7 t ADT: 11

LOCAL - CHICAGO

Over: CREEK

077361701, Cass, IA

Built 1987 Load: 22.7 t ADT: 26

LOCAL/BUCK CRK

Over: CREEK

077361702, Cass, IA

Built 1988 Load: 22.7 t ADT: 30

LOCAL - EAGLE

Over: BUCK CREEK

077360502, Cass, IA

Built 1997 Load: 23.2 t ADT: 62

FM - 570TH

Over: IAIS RR

076370304, Cass, IA

Built 1952 Load: 23.3 t ADT: 79

LOCAL - 760TH

Over: STALE BRANCH

074342302, Cass, IA

Built 1986 Load: 23.5 t ADT: 11

LOCAL - 670TH

Over: LONE TREE BRANCH

075350502, Cass, IA

Built 1978 Load: 24.5 t ADT: 21

LOCAL - JASPER

Over: CREEK

076362203, Cass, IA

Built 1984 Load: 24.5 t ADT: 91

LOCAL - 100TH

Over: CAMP CREEK

077370301, Cass, IA

Built 1964 Load: 24.5 t ADT: 5

LOCAL - CHICAGO

Over: CREEK

077371401, Cass, IA

Built 1988 Load: 24.5 t ADT: 15

545TH ST

Over: CLARKS BRANCH

074373104, Cass, IA

Built 2016 Load: 24.7 t ADT: 11

FM - YANKTON

Over: THREE MILE CREEK

074363401, Cass, IA

Built 1977 Load: 24.9 t ADT: 34

FM - BOSTON

Over: INDIAN CREEK

077370701, Cass, IA

Built 1974 Load: 24.9 t ADT: 60

FM - BOSTON

Over: CAMP CREEK

077370901, Cass, IA

Built 1976 Load: 24.9 t ADT: 45

LOCAL - 670TH

Over: SEVEN MILE CREEK

075353202, Cass, IA

Built 1978 Load: 25.3 t ADT: 15

FM - SEATTLE

Over: SEVEN MILE CREEK

074360503, Cass, IA

Built 1968 Load: 25.7 t ADT: 71

FM - YANKTON

Over: SEVEN MILE CREEK

074363105, Cass, IA

Built 1974 Load: 25.7 t ADT: 15

LOCAL - HAMBURG

Over: CREEK

076341003, Cass, IA

Built 1983 Load: 25.7 t ADT: 41

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

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Compiled by PlainBridges, Independent data publisher

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.