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)

US 30 WB

Good

Over: SPRING CREEK

3 Mi E of US30/IA1 INTCHG, Linn, IA

Built 2019 Load: 32.4 t ADT: 5,400

US 30 EB

Good

Over: SPRING CREEK

3 Mi E of US30/IA1 INTCHG, Linn, IA

Built 2019 Load: 32.4 t ADT: 5,400

IA 100 EB

Good

Over: MORGAN CREEK

0.1 mi N of SR E48 INTCHG, Linn, IA

Built 2016 Load: 32.4 t ADT: 1,640

IA 100 WB

Good

Over: MORGAN CREEK

0.1 MI N of SR E48 INTCHG, Linn, IA

Built 2016 Load: 32.4 t ADT: 1,640

IA 100 WB OFF RAMP

Good

Over: MORGAN CREEK

IA100 WB & SR E48 INTCHG, Linn, IA

Built 2016 Load: 32.4 t ADT: 1,530

IA 100 EB ON RAMP

Good

Over: MORGAN CREEK

IA100 EB & SR E48 INTCHG, Linn, IA

Built 2016 Load: 32.4 t ADT: 1,440

E 48 E AVE

Good

Over: MORGAN CREEK

IA100 & SR E48 INTCHG, Linn, IA

Built 2016 Load: 32.4 t ADT: 304

IA 1

Good

Over: ABBE CREEK

3.1 MI. N U.S. 30, Linn, IA

Built 2016 Load: 32.4 t ADT: 4,570

E.ROBINS RD

Good

Over: CHRISTOPHER CREEK

084072600, Linn, IA

Built 1985 Load: 32.7 t ADT: 5,794

COGGON RD

Good

Over: TRIB. TO WAPSI RIVER

086070305, Linn, IA

Built 1974 Load: 32.7 t ADT: 992

50TH STREET

Good

Over: WANATEE CREEK

084063300, Linn, IA

Built 1998 Load: 32.7 t ADT: 201

HUNTINGTON HILL RD

Good

Over: BERRY'S RUN

084061900, Linn, IA

Built 2002 Load: 32.7 t ADT: 128

29TH AVE

Good

Over: WANATEE CREEK

084063501, Linn, IA

Built 2011 Load: 32.7 t ADT: 6,593

29TH AVE

Good

Over: INDIAN CREEK

084063100, Linn, IA

Built 2008 Load: 33.9 t ADT: 7,094

NB I-380

Good

Over: EAST BLUE CREEK

2.3 mi. N of Jct. SR W35, Linn, IA

Built 1982 Load: 34.1 t ADT: 10,750

E26 BURNETT STA RD

Good

Over: INDAIN CREEK

085062901, Linn, IA

Built 2021 Load: 34.3 t ADT: 520

US 151 & IA 13

Good

Over: OVER UP RR

1.2 MI. N of E Jct. US 30, Linn, IA

Built 1998 Load: 34.5 t ADT: 9,650

I 380 NB

Good

Over: WEST BLUE CREEK

2.7 mi. N of S.R. W36, Linn, IA

Built 1982 Load: 34.6 t ADT: 10,750

PALO MARSH RD

Good

Over: BEAR CREEK

084081604, Linn, IA

Built 1982 Load: 34.7 t ADT: 2,082

LEFEBURE RD

Good

Over: TRIB TO PRAIRIE CREEK

082081506, Linn, IA

Built 2022 Load: 35.6 t ADT: 648

EB COLL IA 100

Good

Over: OVER CC RR & BIKE PATH

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

Built 1982 Load: 35.6 t ADT: 2,140

NB US 151

Good

Over: BIG CREEK

4.7 mi. N of Jct. IA 13, Linn, IA

Built 1992 Load: 35.6 t ADT: 7,000

SB I-380

Good

Over: WEST BLUE CREEK

2.7 MI. N OF JCT SR W35, Linn, IA

Built 1982 Load: 35.8 t ADT: 10,750

EB IA 100

Good

Over: INDIAN CREEK

3.2 MI. W JCT. IA 13 &151, Linn, IA

Built 1995 Load: 35.9 t ADT: 11,050

CEDAR RIVER RD.

Good

Over: BALES BRANCH CR.

082051802, Linn, IA

Built 1983 Load: 36.0 t ADT: 1,738

SPRING CR.RD.

Good

Over: SPRING CREEK

082052806, Linn, IA

Built 1992 Load: 36.0 t ADT: 97

ELY RD

Good

Over: PLEASANT RUN CREEK

082071306, Linn, IA

Built 1958 Load: 36.0 t ADT: 5,008

SPRINGVILLE RD

Good

Over: ELBOW CREEK

083051602, Linn, IA

Built 1960 Load: 36.0 t ADT: 687

ELLIS RD

Good

Over: SILVER CREEK

083081605, Linn, IA

Built 1990 Load: 36.0 t ADT: 707

LOCAL

Good

Over: SILVER CREEK

083081704, Linn, IA

Built 1991 Load: 36.0 t ADT: 108

HODGIN RD

Good

Over: TRIB E BIG CREEK

084052101, Linn, IA

Built 1986 Load: 36.0 t ADT: 49

TOWER TER.RD.

Good

Over: TRIB. OTTER CREEK

084082417, Linn, IA

Built 1985 Load: 36.0 t ADT: 1,777

WAUBEEK RD

Good

Over: RICOCHET CREEK

085062405, Linn, IA

Built 2001 Load: 36.0 t ADT: 373

E OTTER RD

Good

Over: EAST OTTER CREEK

085072809, Linn, IA

Built 1978 Load: 36.0 t ADT: 108

I 380 NB

Good

Over: EAST OTTER CREEK

1.3 MI. N of Jct. SR E34, Linn, IA

Built 1983 Load: 36.3 t ADT: 12,850

IA 100 WB

Good

Over: INDIAN CREEK

3.2 MI W OFJCT US151/IA13, Linn, IA

Built 1995 Load: 36.3 t ADT: 11,050

SB I-380

Good

Over: WEST OTTER CREEK

2.7 mi. N of Jct. SR E34, Linn, IA

Built 1983 Load: 37.6 t ADT: 12,850

BIG SPRINGS RD

Good

Over: TRIB TO INDIAN CREEK

084062100, Linn, IA

Built 2003 Load: 37.8 t ADT: 20

US 151

Good

Over: DRAINAGE DITCH #2

0.6 MI. SOUTH OF US 30, Linn, IA

Built 2020 Load: 38.9 t ADT: 9,900

NB US 151

Good

Over: BIG CREEK

1.9 mi. N of Jct. SR X20, Linn, IA

Built 1992 Load: 39.2 t ADT: 6,500

E16 CENTRALCITYRD

Good

Over: WEST OTTER CREEK

085070701, Linn, IA

Built 2020 Load: 39.9 t ADT: 1,011

D62 SPENCERS GROVE

Good

Over: SMALL NATURAL STREAM

T86N, R08W, 7, Linn, IA

Built 2018 Load: 40.8 t ADT: 707

EDGEWOOD RD

Good

Over: CRANDIC RR

082070704, Linn, IA

Built 2009 Load: 40.8 t ADT: 10,700

IA 13

Good

Over: BUFFALO CREEK

0.1 mi. N of S Jct SR D62, Linn, IA

Built 1976 Load: 41.1 t ADT: 4,970

US 151 & IA 13

Good

Over: BIG CREEK

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

Built 1998 Load: 41.5 t ADT: 9,650

CO HOME RD

Good

Over: CRAPAPPLE CREEK

084061401, Linn, IA

Built 2006 Load: 41.8 t ADT: 1,935

HAGERMAN RD

Good

Over: W OTTER CREEK

084080103, Linn, IA

Built 1983 Load: 42.1 t ADT: 137

NEWBOLD RD

Good

Over: E BLUE CREEK

T85N, R08W, SECTION 4, Linn, IA

Built 2017 Load: 42.3 t ADT: 49

OAK DRIVE

Good

Over: INDIAN CREEK

083063010, Linn, IA

Built 2023 Load: 42.4 t

E16 SAWYER RD

Good

Over: HEATON CREEK

T85N, R06W, 2, Linn, IA

Built 2018 Load: 42.4 t ADT: 1,768

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.