Sac County, IA

188 public highway bridges

Sac County Bridge Snapshot

Sac County, Iowa contains 188 public highway bridges in the FHWA National Bridge Inventory. Roughly 34% are rated “Good,” 31.9% “Fair,” 31.9% “Poor,” and 31.9% 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.

188
Total Bridges
34%
Good
31.9%
Poor
31.9%
Structurally Deficient

Condition Distribution

Good
34% (64)
Fair
31.9% (60)
Poor
31.9% (60)
SD
31.9% (60)

All Bridges (188)

IA 175

Unknown

Over: HIGH ST

1.9 mi. E of SR M64, Sac, IA

Built 1934 ADT: 500

US 20 EB

Unknown

Over: US 71 SB & IA 471

At jct. US 71, Sac, IA

Built 2012 ADT: 1,535

230TH ST

Unknown

Over: US 20

1.4 mi. W of jct. SR M54, Sac, IA

Built 2012 ADT: 6,600

US 20 WB

Unknown

Over: US 71 NB

US 20 over US 71, Sac, IA

Built 2012 ADT: 510

LOCAL

Fair

Over: SMALL STREAM

089372202, Sac, IA

Built 1917 Load: 9.4 t ADT: 26

FM

Fair

Over: STREAM

086363501, Sac, IA

Built 1923 Load: 9.6 t ADT: 15

LOCAL

Fair

Over: WHEELER CREEK

086373002, Sac, IA

Built 1932 Load: 11.1 t ADT: 15

LOCAL

Fair

Over: STREAM

086360711, Sac, IA

Built 1957 Load: 12.4 t ADT: 60

IA 175

Fair

Over: STREAM

0.1 mi. W of jct. SR M64, Sac, IA

Built 1937 Load: 12.6 t ADT: 1,930

FM

Fair

Over: DD #31

087353403, Sac, IA

Built 1919 Load: 13.1 t ADT: 34

FM

Fair

Over: INDIAN CREEK

087360701, Sac, IA

Built 1917 Load: 13.5 t ADT: 20

FM

Fair

Over: PORTER CREEK

086383501, Sac, IA

Built 1953 Load: 14.1 t ADT: 26

LOCAL

Fair

Over: BOYER CREEK

089371102, Sac, IA

Built 1958 Load: 14.1 t ADT: 34

LOCAL

Fair

Over: STREAM

086363402, Sac, IA

Built 1934 Load: 14.8 t ADT: 40

LOCAL ROAD

Fair

Over: SMALL STREAM

086380101, Sac, IA

Built 1919 Load: 15.2 t ADT: 26

FM

Fair

Over: SMALL STREAM

086370802, Sac, IA

Built 1930 Load: 15.8 t ADT: 50

LOCAL

Fair

Over: STREAM

088372801, Sac, IA

Built 1960 Load: 17.2 t ADT: 40

LOCAL

Fair

Over: SMALL STREAM

086373402, Sac, IA

Built 1922 Load: 17.6 t ADT: 5

IA 471

Fair

Over: DRAINAGE DITCH

0.2 mi. N of SR D-36, Sac, IA

Built 1933 Load: 18.1 t ADT: 1,320

IA 39

Fair

Over: NATURAL STREAM

2.6 mi. S of SR D59, Sac, IA

Built 1951 Load: 18.1 t ADT: 1,540

FM

Fair

Over: SMALL CREEK

088370802, Sac, IA

Built 1919 Load: 19.5 t ADT: 26

FM

Fair

Over: SMALL STREAM

086373303, Sac, IA

Built 1984 Load: 21.2 t ADT: 60

FM

Fair

Over: PORTER CREEK

086383504, Sac, IA

Built 1960 Load: 21.5 t ADT: 100

LOCAL

Fair

Over: SMALL STREAM

088380602, Sac, IA

Built 1919 Load: 21.9 t ADT: 26

LOCAL

Fair

Over: RACCOON RIVER

089353103, Sac, IA

Built 1975 Load: 22.3 t ADT: 26

LOCAL ROAD

Fair

Over: BOYER RIVER

086370201, Sac, IA

Built 1969 Load: 22.6 t ADT: 30

LOCAL

Fair

Over: SMALL STREAM

087380902, Sac, IA

Built 1986 Load: 22.7 t ADT: 15

LOCAL

Fair

Over: RACCOON RIVER

088361001, Sac, IA

Built 1985 Load: 22.7 t ADT: 20

FM

Fair

Over: RACOON RIVER

088361404, Sac, IA

Built 1970 Load: 22.7 t ADT: 319

AHRENS ST

Fair

Over: RACCOON RIVER

088362500, Sac, IA

Built 1982 Load: 25.1 t ADT: 354

FM

Fair

Over: LIME CREEK

086363301, Sac, IA

Built 1922 Load: 26.3 t ADT: 50

FM

Fair

Over: BOYER RIVER

088372101, Sac, IA

Built 1967 Load: 26.3 t ADT: 20

D 36 (255TH ST)

Fair

Over: DRAINAGE DITCH

088372403, Sac, IA

Built 1933 Load: 26.3 t ADT: 679

LOCAL

Fair

Over: STREAM

086382001, Sac, IA

Built 1973 Load: 27.3 t ADT: 11

LOCAL

Fair

Over: BOYER RIVER

089371002, Sac, IA

Built 1978 Load: 29.4 t ADT: 5

LOCAL

Fair

Over: SMALL STREAM

087362402, Sac, IA

Built 1985 Load: 29.8 t ADT: 20

FM

Fair

Over: NO NAME CREEK

089380502, Sac, IA

Built 1971 Load: 30.0 t ADT: 450

FM

Fair

Over: HALFWAY CREEK

089382902, Sac, IA

Built 1973 Load: 30.0 t ADT: 319

LOCAL

Fair

Over: STREAM

086372306, Sac, IA

Built 1973 Load: 30.6 t ADT: 30

FM

Fair

Over: RACCOON RIVER

087353201, Sac, IA

Built 1974 Load: 30.6 t ADT: 150

LOCAL

Fair

Over: CEDAR CREEK

088362508, Sac, IA

Built 1987 Load: 30.6 t ADT: 230

LOCAL

Fair

Over: RACCOON RIVER

086350404, Sac, IA

Built 1976 Load: 30.8 t ADT: 40

FM

Fair

Over: DD #57

086361201, Sac, IA

Built 1975 Load: 30.8 t ADT: 210

LOCAL

Fair

Over: BOYER RIVER

089370502, Sac, IA

Built 1981 Load: 31.8 t ADT: 15

IA 471

Fair

Over: BOYER RIVER

3.5 mi. N of Jct IA 175, Sac, IA

Built 1984 Load: 32.2 t ADT: 1,070

LOCAL

Fair

Over: NO NAME CREEK

087370901, Sac, IA

Built 1988 Load: 32.7 t ADT: 34

LOCAL

Fair

Over: ELK CREEK

088382802, Sac, IA

Built 1984 Load: 32.7 t ADT: 30

FM

Fair

Over: DD 81

089352101, Sac, IA

Built 1988 Load: 32.7 t ADT: 270

LOCAL

Fair

Over: STREAM

089373402, Sac, IA

Built 1985 Load: 32.7 t ADT: 26

FM

Fair

Over: HALFWAY CREEK

089382801, Sac, IA

Built 1991 Load: 32.7 t ADT: 469

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