Linn County, IA

428 public highway bridges

Linn County Bridge Snapshot

Linn County, Iowa contains 428 public highway bridges in the FHWA National Bridge Inventory. Roughly 40% are rated “Good,” 33.6% “Fair,” 4.7% “Poor,” and 4.7% 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.

428
Total Bridges
40%
Good
4.7%
Poor
4.7%
Structurally Deficient

Condition Distribution

Good
40% (171)
Fair
33.6% (144)
Poor
4.7% (20)
SD
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

OLD BR.RD.

Poor

Over: PRAIRIE CREEK

082081204, Linn, IA

Built 1906 Load: 6.2 t ADT: 110

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

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

FM E-66

Structurally Deficient

Over: OSCAR CREEK

000000000, Linn, IA

Built 1917 Load: 4.9 t ADT: 640

ROSEDALE RD

Structurally Deficient

Over: INDIAN CR

083062002, Linn, IA

Built 1890 Load: 6.3 t ADT: 299

BURLINGHAM RD

Structurally Deficient

Over: BUFFALO CR

085051401, Linn, IA

Built 1900 Load: 11.7 t ADT: 50

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