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:

AUSTIN RD

Over: BIG CR

084050601, Linn, IA

Built 1977 Load: 57.3 t ADT: 49

HENIK RD

Over: TRIB TO CEDAR RIVER

082051705, Linn, IA

Built 1998 Load: 57.9 t ADT: 78

MC CLELLAND RD

Over: SPRING CR

082052304, Linn, IA

Built 2002 Load: 57.9 t ADT: 29

MARION AIRPT RD

Over: CRABAPPLE CREEK

083060107, Linn, IA

Built 1992 Load: 57.9 t ADT: 70

O CONNER RD

Over: ALLEN CREEK

083062604, Linn, IA

Built 1990 Load: 57.9 t ADT: 59

SISLEY GROVE RD

Over: MORGAN CREEK

083083204, Linn, IA

Built 1994 Load: 57.9 t ADT: 33

WHITE RD

Over: DRY CR

084070203, Linn, IA

Built 1989 Load: 57.9 t ADT: 20

HORSESHOE LK RD

Over: TRIB TO CEDAR RIVER

084081404, Linn, IA

Built 1975 Load: 57.9 t ADT: 20

LINN-BENTON RD

Over: LITTLE GANNON CK

084083004, Linn, IA

Built 1992 Load: 57.9 t ADT: 88

MAXWELL RD

Over: TRIB WAPSIPINICON R

085050803, Linn, IA

Built 1998 Load: 57.9 t ADT: 78

GAME CLUB RD

Over: HEATONS CREEK

085061201, Linn, IA

Built 1999 Load: 57.9 t ADT: 78

SUTTON RD

Over: INDIAN CREEK

085061904, Linn, IA

Built 2002 Load: 57.9 t ADT: 78

LILLIE RD.

Over: INDIAN CREEK

085063204, Linn, IA

Built 1996 Load: 57.9 t ADT: 20

IOWA RD

Over: W OTTER CR,TRIB. TO

085070703, Linn, IA

Built 1977 Load: 57.9 t ADT: 20

IOWA RD

Over: W OTTER CREEK

085070703, Linn, IA

Built 1996 Load: 57.9 t ADT: 20

FISHEL RD

Over: E OTTER CREEK

085073307, Linn, IA

Built 2004 Load: 57.9 t ADT: 33

INDIAN BOUND.RD

Over: TRIB CEDAR R

085081704, Linn, IA

Built 1997 Load: 57.9 t ADT: 137

RED BRIDGE RD

Over: BOULDER CREEK

086052003, Linn, IA

Built 2003 Load: 57.9 t ADT: 20

LINN-DELA RD

Over: BUFFALO CREEK

086060401, Linn, IA

Built 2000 Load: 57.9 t ADT: 97

NUGENTS RD

Over: BUFFALO CREEK

42.26679783, -91.50518462, Linn, IA

Built 2015 Load: 57.9 t ADT: 49

SEVEN HILLS RD

Over: WASTON CREEK

086061901, Linn, IA

Built 2004 Load: 57.9 t ADT: 49

RED SCHOOL RD

Over: HEATONS CREEK

086062604, Linn, IA

Built 1996 Load: 57.9 t ADT: 29

SUTTONRD.

Over: JUSTINS CREEK

086062902, Linn, IA

Built 1998 Load: 57.9 t ADT: 59

BLODGETT RD

Over: TRIB TO JUSTINS CREEK

086063007, Linn, IA

Built 2005 Load: 57.9 t ADT: 29

LINN BUCHAN RD

Over: WALTONS CREEK

086070101, Linn, IA

Built 1990 Load: 57.9 t ADT: 29

BETTYS GROVE RD

Over: EAST BLUE CREEK

086081006, Linn, IA

Built 1988 Load: 57.9 t ADT: 128

WILEY RD

Over: E. BLUE CREEK

086082103, Linn, IA

Built 1990 Load: 57.9 t ADT: 128

LOCAL

Over: CATTLE RUN CREEK

082053503, Linn, IA

Built 1993 Load: 57.9 t ADT: 71

E. OTTER RE.

Over: WEASEL CREEK

084070504, Linn, IA

Built 1997 Load: 57.9 t ADT: 69

BARRET RD

Over: EAST INDIAN CREEK

085063404, Linn, IA

Built 2000 Load: 57.9 t ADT: 10

HUTCHINSON RD

Over: HEATON CREEK

086061601, Linn, IA

Built 2012 Load: 57.9 t ADT: 108

VALLEY FARM RD

Over: HEATONS CREEK

086061604, Linn, IA

Built 2012 Load: 57.9 t ADT: 98

ROGERS CR RD

Over: ROGERS CR

000000000, Linn, IA

Built 1989 Load: 58.0 t ADT: 94

JORDANS GROV RD

Over: HEATONS CREEK

085060104, Linn, IA

Built 2002 Load: 58.3 t ADT: 442

NO MARION RD

Over: JUSTINS CREEK

086063004, Linn, IA

Built 1997 Load: 99.9 t ADT: 29

BLUE CREEK RD

Over: TRIBUTE WEST BLUE CREEK

086083110, Linn, IA

Built 2007 Load: 99.9 t ADT: 39

US 30,151,& 218

Over: CREEK

0.1 MI. W OF E JCT. 218, Linn, IA

Built 1975 Load: 99.9 t ADT: 28,500

BUSINESS 30

Over: SPRING CREEK

0.13miEjctBus30&LisbonBlV, Linn, IA

Built 1951 Load: 17.0 t ADT: 1,895

ABBE HILLS RD

Over: STREAM

2T82NR5W, Linn, IA

Built 2016 Load: 23.0 t ADT: 108

E AVE NW

Over: STREAM

083073001, Linn, IA

Built 1900 Load: 24.5 t ADT: 3,596

33RD AVE SW

Over: UP AND CRANDIC RR

000000000, Linn, IA

Built 2006 Load: 28.1 t ADT: 10,700

DEAN RD

Over: TRIB TO PRAIRIE CREEK

000000000, Linn, IA

Built 2009 Load: 28.6 t ADT: 2,541

SB I-380

Over: OVER UP RR

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

Built 1974 Load: 28.8 t ADT: 31,400

TOWER TERR.RD.

Over: OTTER CREEK

084082409, Linn, IA

Built 1984 Load: 29.0 t ADT: 1,237

JORDANS GROVE RD

Over: WAPSIPINICON RIVER

085061302, Linn, IA

Built 2020 Load: 29.2 t ADT: 371

NB IA 13

Over: OVER CC RR

0.4 MI. S OF SR E16, Linn, IA

Built 1973 Load: 31.7 t ADT: 3,600

US 151 NB

Over: CRAB APPLE CREEK

2.9 MI. N OF N JCT. IA 13, Linn, IA

Built 2021 Load: 32.4 t ADT: 7,000

US 151

Over: PRAIRIE CREEK

3 mi. S of US 30 JCT., Linn, IA

Built 2021 Load: 32.4 t ADT: 7,800

SHAVER RD NE

Over: MCCLOUD RUN

083071600, Linn, IA

Built 2023 Load: 32.4 t ADT: 2,450

IA 100

Over: CEDAR RIVER & IANR RR

1.7 Mi. NE of E36, Linn, IA

Built 2016 Load: 32.4 t ADT: 11,500

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.