Johnson County, IA

317 public highway bridges

Johnson County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Johnson County, Iowa contains 317 public highway bridges. Roughly 33.4% are rated “Good,” 45.1% “Fair,” and 8.2% “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.

317
Total Bridges
33.4%
Good
45.1%
Fair
8.2%
Poor Condition

Condition Distribution

Good
33.4% (106)
Fair
45.1% (143)
Poor
8.2% (26)

All Bridges (317)

I 380 NB

Good

Over: CLEAR CREEK

0.5 MI. N OF JCT. 80, Johnson, IA

Built 2021 Load: 32.4 t ADT: 18,000

I 380 SB

Good

Over: CLEAR CREEK

I-80 / I-380 INTERCHANGE, Johnson, IA

Built 2022 Load: 32.4 t ADT: 18,000

I 380 NB

Good

Over: IAIS RR

0.7 MI. N OF JCT. I-80, Johnson, IA

Built 2021 Load: 32.4 t ADT: 26,550

I 380 SB

Good

Over: IAIS RR

I-80 / I-380 INTERCHANGE, Johnson, IA

Built 2022 Load: 32.4 t ADT: 26,550

US218 NB TO I80 EB

Good

Over: CLEAR CREEK

I-80/I-380/US 218 INTERCH, Johnson, IA

Built 2021 Load: 32.4 t ADT: 4,830

I380 SB TO I80 EB

Good

Over: CLEAR CREEK

I80/I380 INTERCHANGE, Johnson, IA

Built 2022 Load: 32.4 t ADT: 14,400

560TH ST

Good

Over: BR DEER CREEK

078083401, Johnson, IA

Built 1999 Load: 32.7 t ADT: 70

SW 360TH ST

Good

Over: N BR OLD MANS CR

079080903, Johnson, IA

Built 1998 Load: 32.7 t ADT: 35

LOCAL

Good

Over: SMALL STREAM

077052101, Johnson, IA

Built 1999 Load: 32.7 t ADT: 60

MORMAN TREK BLV

Good

Over: WILLOW CREEK

079062100, Johnson, IA

Built 2005 Load: 32.7 t ADT: 5,200

OAKDALE BLVD

Good

Over: MUDDY CREEK

080063304, Johnson, IA

Built 2009 Load: 32.7 t ADT: 4,020

SWISHERVIEW DR.

Good

Over: SMALL STREAM

000000000, Johnson, IA

Built 1900 Load: 32.7 t ADT: 1,168

LIBERTY DRIVE

Good

Over: SNYDER CREEK

079051900, Johnson, IA

Built 1998 Load: 32.7 t ADT: 40

MORMON TRK BLVD

Good

Over: WILLOW CREEK

079061700, Johnson, IA

Built 2000 Load: 32.7 t ADT: 10,001

SCOTT BLVD

Good

Over: RALSTON CREEK N. BRANCH

079060100, Johnson, IA

Built 2003 Load: 32.7 t ADT: 4,858

RIVERSIDE DR

Good

Over: 218 RR AND RIVERSIDE DR

079062100, Johnson, IA

Built 2006 Load: 32.7 t ADT: 2,410

OAKDALE BLVD

Good

Over: MUDDY CREEK

000000000, Johnson, IA

Built 2012 Load: 32.7 t ADT: 4,020

NORTHGATE DR

Good

Over: TRIB. TO RAPID CREEK

080063600, Johnson, IA

Built 2003 Load: 32.7 t ADT: 66

US 218

Good

Over: DEER CREEK

0.9 mi. S of Jct. I-80, Johnson, IA

Built 1970 Load: 32.7 t ADT: 32,400

IRELAND AVENUE

Good

Over: CLEAR CREEK

080073304, Johnson, IA

Built 1973 Load: 33.1 t ADT: 8,339

JASPER AVE

Good

Over: STREAM

000000000, Johnson, IA

Built 1985 Load: 33.5 t ADT: 970

CAMP CARDINAL R

Good

Over: CLEAR CREEK

000000000, Johnson, IA

Built 1984 Load: 33.7 t ADT: 9,800

SB US 218

Good

Over: OLD MAN CREEK

0.7 mi. S of Jct. SR F62, Johnson, IA

Built 1982 Load: 33.8 t ADT: 9,650

SW HAZLWOOD AVE

Good

Over: OLD MANS CREEK

079073106, Johnson, IA

Built 1991 Load: 33.9 t ADT: 70

CALKINS AVE

Good

Over: OLD MANS CREEK

079083304, Johnson, IA

Built 1999 Load: 33.9 t ADT: 30

OAKCRESTHILL RD

Good

Over: DRAINAGE DITCH

T78N, R6W, 28, Johnson, IA

Built 2018 Load: 34.3 t ADT: 1,530

MCCOLLISTER BLV

Good

Over: IOWA RIVER

079062201, Johnson, IA

Built 2009 Load: 34.3 t ADT: 6,000

OAKCRESTHILL RD

Good

Over: OLD MAN CREEK

078062114, Johnson, IA

Built 2005 Load: 34.6 t ADT: 1,530

SW NAPLES AVE

Good

Over: OLD MAN'SCREEK

078060508, Johnson, IA

Built 1985 Load: 34.6 t ADT: 150

IA 1

Good

Over: OLD MANS CRK E OVERFLOW

0.8 MI. S, OF SR F52, Johnson, IA

Built 2020 Load: 34.7 t ADT: 4,890

IA 1

Good

Over: OLD MANS CRK E OVRFLW

0.8 mi S of SR F52, Johnson, IA

Built 2020 Load: 34.7 t ADT: 4,890

SW MAIER AVE

Good

Over: OLD MANS CREEK

078060604, Johnson, IA

Built 1996 Load: 35.2 t ADT: 140

FM SW 500TH ST

Good

Over: OLD MANS CREEK

078061603, Johnson, IA

Built 1996 Load: 35.2 t ADT: 510

ROHRET RD

Good

Over: N FORK OLD MAN CREEK

079082601, Johnson, IA

Built 1979 Load: 35.2 t ADT: 30

F20 AMANA RD

Good

Over: BR IOWA RIVER

T81N, R08W, 19, Johnson, IA

Built 2018 Load: 35.3 t ADT: 160

FM

Good

Over: OVER IAIS RR

079052704, Johnson, IA

Built 1993 Load: 35.6 t ADT: 820

FM 3 CO BR RD

Good

Over: BR PRAIRIE CREEK

077053103, Johnson, IA

Built 1997 Load: 36.0 t ADT: 80

SW SIOUX AVE

Good

Over: STREAM

078051902, Johnson, IA

Built 1966 Load: 36.0 t ADT: 50

FM UTAH AVE

Good

Over: STREAM

078052702, Johnson, IA

Built 1998 Load: 36.0 t ADT: 2,020

NAPLES AVE SW

Good

Over: OLD MAN'S CREEK

078060504, Johnson, IA

Built 1985 Load: 36.0 t ADT: 11

LOCAL

Good

Over: SMALL STREAM

078060702, Johnson, IA

Built 1997 Load: 36.0 t ADT: 30

LOCAL

Good

Over: DIRTY FACE CREEK

078071702, Johnson, IA

Built 1997 Load: 36.0 t ADT: 40

560TH ST SW

Good

Over: STREAM

078083601, Johnson, IA

Built 1900 Load: 36.0 t ADT: 51

OSAGE RD

Good

Over: SMALL STREAM

079052502, Johnson, IA

Built 1989 Load: 36.0 t ADT: 40

KANSAS AVE

Good

Over: DEER CREEK

079070202, Johnson, IA

Built 1994 Load: 36.0 t ADT: 140

IRELAND AVE

Good

Over: DEER CR

079070404, Johnson, IA

Built 2005 Load: 36.0 t ADT: 120

FM SW IVY AVE

Good

Over: OLD WOMEN'S CR

079071602, Johnson, IA

Built 1977 Load: 36.0 t ADT: 100

FM IWV RD

Good

Over: OLD WOMEN'S CR

079071701, Johnson, IA

Built 2006 Load: 36.0 t ADT: 1,020

FM ROHRET RD

Good

Over: OLD WOMENS CR

079072801, Johnson, IA

Built 2004 Load: 36.0 t ADT: 60

FM SW BLK HWK D

Good

Over: N BR OLD MAN'S CR

079080508, Johnson, IA

Built 2000 Load: 36.0 t ADT: 1,450

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.