Linn County, IA

428 public highway bridges

Linn County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Linn County, Iowa contains 428 public highway bridges. Roughly 40% are rated “Good,” 33.6% “Fair,” and 4.7% “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.

428

Total Bridges

40%

Good

33.6%

Fair

4.7%

Poor Condition

Condition Distribution

Good

40% (171)

Fair

33.6% (144)

Poor

4.7% (20)

All Bridges (428)

Sort:

FROZEN HILL RD

Over: BUFFALO CREEK

085051302, Linn, IA

Built 1951 Load: 22.0 t ADT: 49

LOCAL

Over: TRIB BUFFALO CREEK

086060301, Linn, IA

Built 1994 Load: 22.0 t ADT: 88

WB US 30

Over: CIC RR

0.8 MI. W OF JCT. I-380, Linn, IA

Built 1979 Load: 22.4 t ADT: 15,000

BLAIRSFERRY RD

Over: TRIB TO CEDAR RIVER

000000000, Linn, IA

Built 1968 Load: 22.7 t ADT: 9,300

50TH AVE SOUTHWEST

Over: DRAINAGE DITCH

087070905, Linn, IA

Built 1960 Load: 22.7 t ADT: 1,949

US 30 & 151

Over: DRAINAGE DITCH

0.3 mi. E of Jct. I-380, Linn, IA

Built 1975 Load: 22.9 t ADT: 22,500

CLUB RD

Over: SOUTH HOOSIER CREEK

082072706, Linn, IA

Built 1979 Load: 23.7 t ADT: 913

SPRINGVILLE RD

Over: ABBE CREEK

082050302, Linn, IA

Built 1960 Load: 24.3 t ADT: 845

PARIS RD

Over: WAPSIPINICON RIVER

086062901, Linn, IA

Built 1954 Load: 24.6 t ADT: 344

MORGAN BR RD

Over: MORGAN CREEK

083082802, Linn, IA

Built 1987 Load: 25.0 t ADT: 34

URBANA RD

Over: EAST BLUE CREEK

085080805, Linn, IA

Built 1987 Load: 25.3 t ADT: 1,257

NORTH ST

Over: DRY CREEK

000000000, Linn, IA

Built 1959 Load: 25.8 t ADT: 530

IA 100

Over: WANATEE CREEK

0.4 MI. W OF JCT. IA 13, Linn, IA

Built 1995 Load: 25.9 t ADT: 14,000

TROY MILLS RD

Over: WAPSIPINICON RIVER

086070522, Linn, IA

Built 1951 Load: 26.2 t ADT: 2,033

COVINGTON RD

Over: DRY CREEK

000000000, Linn, IA

Built 1955 Load: 26.6 t ADT: 3,107

LINN-BENTON RD

Over: KNAPP CREEK

082083108, Linn, IA

Built 1972 Load: 26.6 t ADT: 730

LUCORE RD

Over: INDIAN CR

084061914, Linn, IA

Built 1972 Load: 26.6 t ADT: 2,445

CENTRAL CITY RD

Over: EAST OTTER CREEK

085071101, Linn, IA

Built 1962 Load: 26.6 t ADT: 982

PARIS RD

Over: RIVER BEND CREEK

086072501, Linn, IA

Built 1963 Load: 26.6 t ADT: 344

ALBURNETT RD

Over: RIVER BEND CREEK

086072502, Linn, IA

Built 1963 Load: 26.6 t ADT: 462

6TH ST

Over: OVER UP RR

000000000, Linn, IA

Built 1948 Load: 26.8 t ADT: 9,391

LINN BUCHANAN

Over: DEAD DOG RUN

086070303, Linn, IA

Built 1949 Load: 27.5 t ADT: 44

NB I-380

Over: CC RR

2.6 MI. S OF JCT. 100, Linn, IA

Built 1980 Load: 27.5 t ADT: 38,800

IA 13

Over: HEATON'S CREEK

2.6 mi. S of S Jct SR D62, Linn, IA

Built 1976 Load: 27.8 t ADT: 5,600

MT.VERNON RD

Over: BIG CREEK

083062601, Linn, IA

Built 1984 Load: 27.8 t ADT: 1,669

MT VERNON RD

Over: WANATEE CREEK

083062909, Linn, IA

Built 1969 Load: 27.9 t ADT: 7,169

ANDERSON RD

Over: BUFFALO CREEK

085052403, Linn, IA

Built 1981 Load: 28.2 t ADT: 88

7TH AVE

Over: INDIAN CREEK

083070100, Linn, IA

Built 1994 Load: 28.3 t ADT: 20,679

UP-BOULDER RD

Over: TRIB TO SILVER CREEK

086051301, Linn, IA

Built 1986 Load: 28.4 t ADT: 20

GLASS RD

Over: OVER CC RR & MCCLOUD RUN

000000000, Linn, IA

Built 1980 Load: 29.4 t ADT: 5,700

NB I-380

Over: OVER UP RR

1.0 MI. N OF JCT. US 30, Linn, IA

Built 1974 Load: 30.1 t ADT: 31,400

LINN-BENTON RD

Over: TRIB TO KNAPP CREEK

Benton-Linn Road, Linn, IA

Built 1972 Load: 30.5 t ADT: 1,530

IA 13

Over: WAPSIPINICON RIVER

IN CENTRAL CITY, Linn, IA

Built 1973 Load: 30.7 t ADT: 5,600

INK ROAD

Over: TRIB TO ABBE CREEK

082050306, Linn, IA

Built 1987 Load: 30.8 t ADT: 128

COTTAGE GR.PWY

Over: WANATEE CREEK

083062101, Linn, IA

Built 1984 Load: 30.8 t ADT: 864

WESTWOOD DR NW

Over: VINTON DITCH

000000000, Linn, IA

Built 1979 Load: 30.9 t ADT: 472

C ST RD

Over: S HOOSIER CR

082072604, Linn, IA

Built 1985 Load: 31.2 t ADT: 128

SPANISH RD

Over: SOUTH HOOSIER CREEK

082073602, Linn, IA

Built 1987 Load: 31.4 t ADT: 137

OLD RIVER RD

Over: PLEASANT RUN CR.

082060805, Linn, IA

Built 1985 Load: 31.8 t ADT: 207

IVANHOE RD

Over: PLEASANT RUN CK

082061803, Linn, IA

Built 1985 Load: 31.8 t ADT: 511

MT VERNON RD

Over: INDIAN CREEK

083062901, Linn, IA

Built 1969 Load: 32.1 t ADT: 7,169

SB I-380

Over: CC RR

2.6 MI. S OF JCT.100, Linn, IA

Built 1980 Load: 32.1 t ADT: 38,800

GRANT ST

Over: DRAINAGE

000000000, Linn, IA

Built 1977 Load: 32.3 t ADT: 2,455

CHAIN BRIDGE ROAD

Over: LONE TREE CREEK

000000000, Linn, IA

Built 1984 Load: 32.3 t ADT: 171

IA 922-1ST AVE

Over: CEDAR RIVER

0.2 MI. N OF I-380, Linn, IA

Built 1920 Load: 32.7 t ADT: 13,000

GREEN RIDGE RD

Over: CLEAR CREEK

082053606, Linn, IA

Built 1992 Load: 32.7 t ADT: 59

C ST RD

Over: HOOSIER CREEK

082072302, Linn, IA

Built 1984 Load: 32.7 t ADT: 1,099

CEDAR RIDGE RD.

Over: BLUE CREEK

085080703, Linn, IA

Built 1989 Load: 32.7 t ADT: 147

STATE ST

Over: APPLE CREEK

State Street, Linn, IA

Built 1989 Load: 32.7 t ADT: 232

OAK CREEK DR NW

Over: DRAINAGE

000000000, Linn, IA

Built 1993 Load: 32.7 t ADT: 40

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.