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)

E. 13TH ST

Structurally Deficient

Over: MUD CK

085102200, Benton, IA

Built 1965 ADT: 60

LOCAL

Structurally Deficient

Over: PRAIRIE CK

086091801, Benton, IA

Built 1947 ADT: 15

LOCAL

Structurally Deficient

Over: SPRING CK

086113002, Benton, IA

Built 1971 ADT: 26

LOCAL

Structurally Deficient

Over: PRATT CK

086113601, Benton, IA

Built 1900 ADT: 50

LOCAL

Structurally Deficient

Over: SPRING CK

086113001, Benton, IA

Built 1971 Load: 2.9 t ADT: 11

LOCAL

Structurally Deficient

Over: PRAIRIE CREEK

084113202, Benton, IA

Built 1947 Load: 5.3 t ADT: 50

FM

Structurally Deficient

Over: MUD CREEK

084111201, Benton, IA

Built 1951 Load: 7.3 t ADT: 15

LOCAL

Structurally Deficient

Over: PRAIRIE CREEK

084112904, Benton, IA

Built 1970 Load: 8.1 t ADT: 50

LOCAL

Structurally Deficient

Over: ROCK CK

086111802, Benton, IA

Built 1974 Load: 8.5 t ADT: 11

LOCAL

Structurally Deficient

Over: BR PRAIRIE CK

082111702, Benton, IA

Built 1970 Load: 8.7 t ADT: 20

LOCAL (LWC)

Structurally Deficient

Over: WEASEL CREEK

082110101, Benton, IA

Built 1979 Load: 10.0 t ADT: 45

LOCAL

Structurally Deficient

Over: PRAIRIE CREEK

082110701, Benton, IA

Built 1974 Load: 11.8 t ADT: 15

LOCAL (LWC)

Structurally Deficient

Over: BR PRAIRIE CK

082102004, Benton, IA

Built 1978 Load: 12.8 t ADT: 60

LOCAL

Structurally Deficient

Over: SMALL CREEK

084120201, Benton, IA

Built 1976 Load: 13.2 t ADT: 11

LOCAL

Structurally Deficient

Over: STREAM

083090801, Benton, IA

Built 1959 Load: 13.3 t ADT: 50

LOCAL

Structurally Deficient

Over: WILD CAT CREEK

084090803, Benton, IA

Built 1900 Load: 14.6 t ADT: 39

LOCAL

Structurally Deficient

Over: PRAIRIE CK

085100204, Benton, IA

Built 1971 Load: 14.6 t ADT: 90

FM

Structurally Deficient

Over: CEDAR RIVER

086100603, Benton, IA

Built 1968 Load: 14.8 t ADT: 324

LOCAL

Structurally Deficient

Over: BR STEIN CK

084121602, Benton, IA

Built 1969 Load: 15.9 t ADT: 34

LOCAL

Structurally Deficient

Over: MORGAN CREEK

083093602, Benton, IA

Built 1964 Load: 16.5 t ADT: 90

LOCAL

Structurally Deficient

Over: BR OPOSSUM CK

084090601, Benton, IA

Built 1958 Load: 16.6 t ADT: 20

FM

Structurally Deficient

Over: PRAIRIE CREEK

082103001, Benton, IA

Built 1900 Load: 17.0 t ADT: 80

FM

Structurally Deficient

Over: BR LITTLE BEAR CREEK

083101302, Benton, IA

Built 1929 Load: 17.0 t ADT: 422

LOCAL

Structurally Deficient

Over: BR OPOSSUM CK

084101102, Benton, IA

Built 1970 Load: 20.5 t ADT: 34

FM

Structurally Deficient

Over: SPRING CREEK

086112001, Benton, IA

Built 1959 Load: 22.1 t ADT: 430

FM

Structurally Deficient

Over: MUD CREEK

084112101, Benton, IA

Built 1955 Load: 30.0 t ADT: 200

FM

Structurally Deficient

Over: PRAIRIE CREEK

085101005, Benton, IA

Built 1967 Load: 30.4 t ADT: 550

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

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial