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)

YATES RD

Good

Over: GANNON CREEK

084083003, Linn, IA

Built 2001 Load: 57.9 t ADT: 15

LINN-BENTON RD

Good

Over: GANNON CREEK

084083102, Linn, IA

Built 2002 Load: 57.9 t ADT: 88

MCNAMARA RD

Good

Over: TRIB BUFFALO CREEK

085050307, Linn, IA

Built 1995 Load: 57.9 t ADT: 59

WAPSIE BANKS RD

Good

Over: TRIB TO WAPSIPINICON

085051603, Linn, IA

Built 1992 Load: 57.9 t ADT: 98

ALDERMAN RD

Good

Over: TRIB WAPSIPINICON RIVER

085052806, Linn, IA

Built 2007 Load: 57.9 t ADT: 33

BURNETT STA.RD.

Good

Over: RICHOHET CREEK

085053001, Linn, IA

Built 1998 Load: 57.9 t ADT: 5

ROWLEY RD

Good

Over: TRIB WAPSIPINICON RIVER

085061008, Linn, IA

Built 2002 Load: 57.9 t ADT: 10

BURNETT STA.RD.

Good

Over: TRIB EAST INDIAN CREEK

085062701, Linn, IA

Built 2003 Load: 57.9 t ADT: 98

LYMAN RD.

Good

Over: E OTTER CR

085070303, Linn, IA

Built 2005 Load: 57.9 t ADT: 29

ALICE RD

Good

Over: TRIB W OTTER CREEK

085070502, Linn, IA

Built 1996 Load: 57.9 t ADT: 137

CUPOLA RD

Good

Over: EAST OTTER CREEK

085071504, Linn, IA

Built 1999 Load: 57.9 t ADT: 70

DEAL RD

Good

Over: W OTTER CREEK,TRIB. TO

085071801, Linn, IA

Built 1997 Load: 57.9 t ADT: 20

DEAL RD

Good

Over: W OTTER CREEK

085071801, Linn, IA

Built 2001 Load: 57.9 t ADT: 20

FOREST EDGE RD

Good

Over: W OTTER CREEK

085071905, Linn, IA

Built 2004 Load: 57.9 t ADT: 59

OLD CENTER RD

Good

Over: E OTTER CREEK

085072103, Linn, IA

Built 2000 Load: 57.9 t ADT: 97

ARABIAN RD

Good

Over: DRY CREEK

085073603, Linn, IA

Built 1991 Load: 57.9 t ADT: 49

ROLLING ACRE RD

Good

Over: EAST BLUE CREEK TRIB TO

085080507, Linn, IA

Built 2002 Load: 57.9 t ADT: 255

ROLLING ACRE RD

Good

Over: EAST BLUE CREEK

085080507, Linn, IA

Built 2002 Load: 57.9 t ADT: 255

QUAIL RIDGE RD

Good

Over: NELSON CREEK

085083503, Linn, IA

Built 1992 Load: 57.9 t ADT: 157

GREENS GROVE RD

Good

Over: NELSON CREEK

085083505, Linn, IA

Built 1991 Load: 57.9 t ADT: 34

CALDWELL RD

Good

Over: BOULDER CREEK

086051602, Linn, IA

Built 2002 Load: 57.9 t ADT: 10

AMMETER RD

Good

Over: TRIB TO BUFFALO CREEK

086051804, Linn, IA

Built 2000 Load: 57.9 t ADT: 11

HILLS MILL RD

Good

Over: BOULDER CREEK

086052004, Linn, IA

Built 2003 Load: 57.9 t ADT: 20

WAGNER RD

Good

Over: CEDAR CREEK

086052106, Linn, IA

Built 2003 Load: 57.9 t ADT: 29

PRAIRIE MAIN RD

Good

Over: CEDAR CREEK

086052905, Linn, IA

Built 2000 Load: 57.9 t ADT: 88

HEATONS VALLEY

Good

Over: TRIB TO HEATONS CREEK

086062303, Linn, IA

Built 1997 Load: 57.9 t ADT: 59

FORD RD

Good

Over: HEATONS CREEK

086063504, Linn, IA

Built 2002 Load: 57.9 t ADT: 59

CAMPFIRE RD

Good

Over: TRIB TO WAPSIPINICON R

086071703, Linn, IA

Built 1997 Load: 57.9 t ADT: 88

WEST OTTER RD

Good

Over: W OTTER CREEK

086073002, Linn, IA

Built 1999 Load: 57.9 t ADT: 29

JUSTINS RD

Good

Over: JUSTINS CREEK

086073603, Linn, IA

Built 2000 Load: 57.9 t ADT: 26

BETTYS GROVE RD

Good

Over: E BLUE CREEK

086081502, Linn, IA

Built 2001 Load: 57.9 t ADT: 128

BETTYS GROVE RD

Good

Over: EAST BLUE CREEK

086082202, Linn, IA

Built 2001 Load: 57.9 t ADT: 10

WILEYS RD

Good

Over: W OTTER CREEK

086082401, Linn, IA

Built 2001 Load: 57.9 t ADT: 49

RING RD

Good

Over: E BLUE CREEK

086082803, Linn, IA

Built 2001 Load: 57.9 t ADT: 29

RING RD

Good

Over: EAST BLUE CREEK

086082808, Linn, IA

Built 2003 Load: 57.9 t ADT: 29

FEE RD

Good

Over: E BLUE CREEK

086083307, Linn, IA

Built 2007 Load: 57.9 t ADT: 70

GRUBBS CR RD

Good

Over: CRUBB CREEK

086083405, Linn, IA

Built 1997 Load: 57.9 t ADT: 70

UP.BOULDER RD

Good

Over: BISON CREEK

086051803, Linn, IA

Built 1995 Load: 57.9 t ADT: 29

UPPER BOULDER R

Good

Over: SILVER CREEK

086051401, Linn, IA

Built 1998 Load: 57.9 t ADT: 11

MORGAN BR RD

Good

Over: MORGAN CREEK

083082802, Linn, IA

Built 2000 Load: 57.9 t ADT: 34

ALDERMAN RD

Good

Over: LITTLE BIG CREEK

084051502, Linn, IA

Built 2000 Load: 57.9 t ADT: 59

PARIS RD

Good

Over: EAST OTTER CREEK

086072701, Linn, IA

Built 2000 Load: 57.9 t ADT: 216

NORTH MARION RD

Good

Over: DRY CREEK

085060702, Linn, IA

Built 2001 Load: 57.9 t ADT: 44

76TH AVE SW

Good

Over: TISSLE HOLLOW CREEK

Linn # 1182, Linn, IA

Built 2010 Load: 57.9 t ADT: 137

MIDWAY RD

Good

Over: E OTTER CR

084070705, Linn, IA

Built 2005 Load: 58.0 t ADT: 255

ALBURNETT RD

Good

Over: DRY CREEK

085073608, Linn, IA

Built 1996 Load: 58.3 t ADT: 1,895

WILLOW CR.RD.

Good

Over: WILLOW CREEK

082051604, Linn, IA

Built 1996 Load: 59.1 t ADT: 39

AUSTIN RD

Good

Over: E INDIAN CREEK

084060401, Linn, IA

Built 1994 Load: 59.1 t ADT: 90

US 30

Good

Over: DRAINAGE

1.4 mi. E US30/IA1 INTCHG, Linn, IA

Built 2018 Load: 60.3 t ADT: 5,400

LINN BENTON RD

Good

Over: BR OF BLUE CREEK

086081802, Linn, IA

Built 2018 Load: 63.2 t ADT: 25

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.