Benton County, IA

327 public highway bridges

Benton County Bridge Snapshot

Benton County, Iowa contains 327 public highway bridges in the FHWA National Bridge Inventory. Roughly 32.1% are rated “Good,” 42.2% “Fair,” 23.5% “Poor,” and 23.5% 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.

327
Total Bridges
32.1%
Good
23.5%
Poor
23.5%
Structurally Deficient

Condition Distribution

Good
32.1% (105)
Fair
42.2% (138)
Poor
23.5% (77)
SD
23.5% (77)

All Bridges (327)

LOCAL

Poor

Over: ROCK CREEK

086111801, Benton, IA

Built 1982 Load: 10.4 t ADT: 26

FM

Poor

Over: SMALL STREAM

085100602, Benton, IA

Built 1925 Load: 16.5 t ADT: 940

FM

Poor

Over: BEAR CREEK

083101306, Benton, IA

Built 1957 Load: 17.0 t ADT: 1,414

10TH AVE

Poor

Over: MINNOW CREEK

082122301, Benton, IA

Built 1900 Load: 17.0 t ADT: 349

LOCAL

Poor

Over: DRY CK

083091401, Benton, IA

Built 1973 Load: 17.4 t ADT: 50

LOCAL

Poor

Over: MUD CREEK

084111304, Benton, IA

Built 1945 Load: 17.7 t ADT: 34

LOCAL

Poor

Over: STEIN CK

084120502, Benton, IA

Built 1948 Load: 17.7 t ADT: 15

FM

Poor

Over: PRAIRIE CREEK

083121301, Benton, IA

Built 1965 Load: 18.3 t ADT: 1,090

LOCAL

Poor

Over: STREAM

083090602, Benton, IA

Built 1970 Load: 18.4 t ADT: 20

LOCAL

Poor

Over: BEAR CK

086101405, Benton, IA

Built 1941 Load: 18.4 t ADT: 40

LOCAL RD

Poor

Over: BR MUD CK

082100203, Benton, IA

Built 1900 Load: 18.6 t ADT: 20

LOCAL

Poor

Over: MUD CREEK

084112304, Benton, IA

Built 1983 Load: 19.6 t ADT: 26

FM

Poor

Over: WOLF CREEK

086121004, Benton, IA

Built 1953 Load: 20.2 t ADT: 30

FM

Poor

Over: BRANCH MUD CREEK

084112303, Benton, IA

Built 1983 Load: 20.4 t ADT: 30

LOCAL

Poor

Over: BR BUCKEYE CK

082122207, Benton, IA

Built 1976 Load: 20.9 t ADT: 45

LOCAL

Poor

Over: BEAR CK

086101105, Benton, IA

Built 1972 Load: 21.2 t ADT: 20

LOCAL (LWC)

Poor

Over: BRANCH ROCK CREEK

086123302, Benton, IA

Built 1984 Load: 22.2 t ADT: 5

FM

Poor

Over: BR CEDAR RIVER

086102804, Benton, IA

Built 1975 Load: 22.5 t ADT: 150

FM

Poor

Over: OPOSSUM CREEK

084101501, Benton, IA

Built 1959 Load: 24.2 t ADT: 1,090

LOCAL

Poor

Over: BR STEIN CK

084123001, Benton, IA

Built 1971 Load: 25.8 t ADT: 5

FM

Poor

Over: PRATT CREEK

085122702, Benton, IA

Built 1971 Load: 26.8 t ADT: 15

FM

Poor

Over: BUCKEYE CREEK

082123608, Benton, IA

Built 1973 Load: 27.1 t ADT: 100

LOCAL

Poor

Over: STEIN CK

085123001, Benton, IA

Built 1971 Load: 27.1 t ADT: 60

FM

Poor

Over: BR ROCK CK

086110502, Benton, IA

Built 1973 Load: 27.1 t ADT: 90

FM

Poor

Over: BEAR CREEK

084092603, Benton, IA

Built 1969 Load: 28.2 t ADT: 2,740

FM

Poor

Over: ROCK CK

085120701, Benton, IA

Built 1958 Load: 29.6 t ADT: 30

FM

Poor

Over: CEDAR RIVER

085091106, Benton, IA

Built 1969 Load: 29.8 t ADT: 1,267

FM

Poor

Over: ROCK CREEK

086122401, Benton, IA

Built 1985 Load: 30.0 t ADT: 430

LOCAL (LWC)

Poor

Over: STREAM

083112902, Benton, IA

Built 1977 Load: 30.6 t ADT: 34

FM

Poor

Over: PRATT CREEK

086113602, Benton, IA

Built 1956 Load: 30.7 t ADT: 540

FM (LWC)

Poor

Over: SMALL STREAM

085120502, Benton, IA

Built 1980 Load: 31.1 t ADT: 20

LOCAL

Poor

Over: BR WILDCAT CK

084102702, Benton, IA

Built 1957 Load: 31.3 t ADT: 15

FM

Poor

Over: PRAIRIE CREEK

082110801, Benton, IA

Built 1959 Load: 31.6 t ADT: 45

LOCAL

Poor

Over: WEASEL CK

082100701, Benton, IA

Built 1957 Load: 31.7 t ADT: 28

FM

Poor

Over: OPOSSUM CREEK

084101601, Benton, IA

Built 1959 Load: 32.3 t ADT: 1,090

FM

Poor

Over: HINKLE CREEK

085113201, Benton, IA

Built 1962 Load: 32.6 t ADT: 570

LOCAL

Poor

Over: MUD CREEK

084111502, Benton, IA

Built 1976 Load: 33.0 t ADT: 26

FM

Poor

Over: PRAIRIE CREEK

082101402, Benton, IA

Built 1961 Load: 33.3 t ADT: 766

FM (LWC)

Poor

Over: SMALL STREAM

086100702, Benton, IA

Built 1990 Load: 34.4 t ADT: 330

LOCAL

Poor

Over: BR PRAIRIE CK

082110502, Benton, IA

Built 1958 Load: 35.9 t ADT: 25

FM

Poor

Over: HINKLE CREEK

085112804, Benton, IA

Built 1988 Load: 36.4 t ADT: 530

FM

Poor

Over: PRATT CREEK

086112502, Benton, IA

Built 1989 Load: 36.9 t ADT: 540

FM

Poor

Over: DRY CREEK

083091102, Benton, IA

Built 1961 Load: 42.6 t ADT: 1,444

LOCAL

Poor

Over: DRY CREEK

083091202, Benton, IA

Built 1976 Load: 45.5 t ADT: 39

LOCAL

Poor

Over: STEIN CK

084121704, Benton, IA

Built 1999 Load: 51.2 t ADT: 11

FM

Poor

Over: PRAIRIE CREEK

082112101, Benton, IA

Built 1960 Load: 62.9 t ADT: 820

LOCAL (LWC)

Structurally Deficient

Over: PRAIRIE CREEK

082110401, Benton, IA

Built 1980 ADT: 15

LOCAL

Structurally Deficient

Over: STREAM

084090503, Benton, IA

Built 1977 ADT: 30

LOCAL

Structurally Deficient

Over: OPOSSUM CK

084090702, Benton, IA

Built 1959 ADT: 11

LOCAL

Structurally Deficient

Over: OPPOSSUM CREEK

084101101, Benton, IA

Built 1960 ADT: 34

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