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)

W BLUE RD

Good

Over: WEST BLUE CREEK

W Blue Rd, T86N, R8W, 30, Linn, IA

Built 2010 Load: 65.4 t ADT: 70

SILVER CK RD

Good

Over: TRIB TO SILVER CREEK

086052401, Linn, IA

Built 2002 Load: 91.7 t ADT: 15

LISBON BLVD

Good

Over: SPRING CREEK

0.4miNjctUS30&LisbonBLVD, Linn, IA

Built 2017 Load: 97.2 t ADT: 786

FLEMINGVIL RD

Good

Over: EAST OTTER CREEK

085071006, Linn, IA

Built 1995 Load: 99.9 t ADT: 70

NELSON CK RD

Good

Over: NELSON CR

085082703, Linn, IA

Built 2003 Load: 99.9 t ADT: 39

INDIAN BRIDGE RD

Good

Over: EAST INDIAN CREEK

085063401, Linn, IA

Built 2001 Load: 99.9 t ADT: 20

FROZEN HILL RD

Good

Over: TRIB TO BUFFALO CREEK

085051202, Linn, IA

Built 2008 Load: 99.9 t ADT: 39

33RD AVE SW

Good

Over: UNNAMED TRIBUTARY

000000000, Linn, IA

Built 2006 Load: 99.9 t ADT: 10,700

FM E-66

Poor

Over: OSCAR CREEK

000000000, Linn, IA

Built 1917 Load: 4.9 t ADT: 640

OLD BR.RD.

Poor

Over: PRAIRIE CREEK

082081204, Linn, IA

Built 1906 Load: 6.2 t ADT: 110

ROSEDALE RD

Poor

Over: INDIAN CR

083062002, Linn, IA

Built 1890 Load: 6.3 t ADT: 299

BIG CREEK RD.

Poor

Over: BIG CREEK

000000000, Linn, IA

Built 1929 Load: 7.2 t ADT: 130

RED BRIDGE RD

Poor

Over: BUFFALO CR

086051903, Linn, IA

Built 1900 Load: 7.6 t ADT: 15

SUTTON RD

Poor

Over: WAPSIPINICON RIVER

086061904, Linn, IA

Built 1879 Load: 7.7 t ADT: 140

BURLINGHAM RD

Poor

Over: BUFFALO CR

085051401, Linn, IA

Built 1900 Load: 11.7 t ADT: 50

MATSELL PK RD

Poor

Over: WAPSIPINICON RIVER

085053606, Linn, IA

Built 1939 Load: 16.5 t ADT: 147

WINSLOW RD

Poor

Over: INDIAN CREEK

084063000, Linn, IA

Built 2002 Load: 19.3 t ADT: 1,129

CENTER PT.RD.

Poor

Over: EAST OTTER CK

084070614, Linn, IA

Built 1956 Load: 19.4 t ADT: 5,401

MARTIN CR.RD.

Poor

Over: MARTINS CR

083061105, Linn, IA

Built 1972 Load: 21.7 t ADT: 120

HILLS MILL RD

Poor

Over: BUFFALO CREEK

086052912, Linn, IA

Built 1940 Load: 21.7 t ADT: 88

PALISADES ACCESS

Poor

Over: FLAMINGO CREEK

082063406, Linn, IA

Built 1971 Load: 23.3 t ADT: 40

E AVE NORTHWEST

Poor

Over: CEDAR RIVER

000000000, Linn, IA

Built 1979 Load: 24.4 t ADT: 3,447

NORTHBROOK DR

Poor

Over: DRY CREEK

000000000, Linn, IA

Built 1972 Load: 26.0 t ADT: 1,755

HICKORYVALLEYRD

Poor

Over: WEST OTTER CREEK

085071803, Linn, IA

Built 1987 Load: 32.7 t ADT: 11

F AVE NORTHWEST

Poor

Over: CEDAR RIVER

000000000, Linn, IA

Built 1979 Load: 33.5 t ADT: 2,193

SAWYER RD

Poor

Over: TRIB TO BUFFALO CREEK

085050407, Linn, IA

Built 1926 Load: 35.3 t ADT: 1,100

WAUBEEK RD

Poor

Over: TRIB WAPSIPINICON R

085061403, Linn, IA

Built 1927 Load: 36.6 t ADT: 78

WORCHESTER RD

Poor

Over: MORGAN CREEK

083082205, Linn, IA

Built 2000 Load: 52.4 t ADT: 439

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

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.