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)

NAPLES AVE

Good

Over: HOOSIER CR

081060504, Johnson, IA

Built 2000 Load: 36.0 t ADT: 39

RACINE AVE

Good

Over: STREAM

081062502, Johnson, IA

Built 2002 Load: 36.0 t ADT: 181

CALKINS AVE

Good

Over: KNAPP CR

081080402, Johnson, IA

Built 2008 Load: 36.0 t ADT: 49

LOCAL

Good

Over: SMALL STREAM

077052101, Johnson, IA

Built 1999 Load: 36.0 t ADT: 60

SW KANSAS AVE

Good

Over: OLD MANS CREEK

079073502, Johnson, IA

Built 2000 Load: 36.2 t ADT: 30

I80 EB TO US218 SB

Good

Over: LAND

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

Built 2020 Load: 36.3 t ADT: 3,910

HALFMOON AVE

Good

Over: STREAM

080073204, Johnson, IA

Built 2003 Load: 36.6 t ADT: 410

I 80 WB

Good

Over: IOWA RIVER

3.0 MI. W OF JCT. IA 1, Johnson, IA

Built 1960 Load: 36.6 t ADT: 32,050

F44 HOOVER HWY NE

Good

Over: BR WAPSINONOC CREEK

0507900375, Johnson, IA

Built 2022 Load: 36.6 t ADT: 3,390

FM AMANA RD

Good

Over: STREAM

081082111, Johnson, IA

Built 1973 Load: 36.9 t ADT: 190

NB US 218

Good

Over: OLD MAN CREEK

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

Built 1982 Load: 36.9 t ADT: 9,650

S RIVERSIDE DR

Good

Over: WILLOW CREEK

079062200, Johnson, IA

Built 1971 Load: 37.0 t ADT: 2,048

POLK AVE

Good

Over: LINGLE CREEK

081060304, Johnson, IA

Built 1986 Load: 37.4 t ADT: 59

HALF MOON AVE

Good

Over: DEER CREEK

079070504, Johnson, IA

Built 2022 Load: 39.2 t ADT: 143

TAFT AVE

Good

Over: BR BUCK CREEK

078052902, Johnson, IA

Built 2016 Load: 39.3 t ADT: 46

JASPER AVE

Good

Over: STREAM

T78N, R7W, 22, Johnson, IA

Built 2018 Load: 39.3 t ADT: 15

COPI RD

Good

Over: CLEAR CREEK

SE1/4 of 30, T-80N, R7W, Johnson, IA

Built 2015 Load: 39.3 t ADT: 42

JOHNSON IA RD

Good

Over: STREAM

NW1/4,30,T80N,R8W, Johnson, IA

Built 2015 Load: 39.3 t ADT: 61

SEVEN SIS RD

Good

Over: HOOSIER CREEK

081060507, Johnson, IA

Built 2005 Load: 39.3 t ADT: 92

LINN-JOHNSON RD

Good

Over: STREAM

081080101, Johnson, IA

Built 2001 Load: 39.3 t ADT: 81

F 62 (520TH ST)

Good

Over: BIG SLOUGH CR

F62 7.5 mi. east of Hills, Johnson, IA

Built 2012 Load: 40.0 t ADT: 760

JOHNSON-IOWA RD

Good

Over: DEER CREEK

078080704, Johnson, IA

Built 2019 Load: 40.0 t ADT: 170

IA 1

Good

Over: UNNAMED STREAM

.4 mi S of jct. SR F12/14, Johnson, IA

Built 2014 Load: 40.2 t ADT: 6,000

SWAN LAKE RD

Good

Over: BR IOWA RIVER

T80N, R07W, 3, Johnson, IA

Built 2018 Load: 40.8 t ADT: 131

W 62

Good

Over: OLD MANS CREEK

0790736, Johnson, IA

Built 2014 Load: 41.2 t ADT: 550

BLACKHAWK AVE

Good

Over: BR CLEAR CR

080082003, Johnson, IA

Built 2021 Load: 41.8 t ADT: 275

S.W.LACKENDER

Good

Over: PICAYUNE CREEK

078072304, Johnson, IA

Built 1994 Load: 43.3 t ADT: 41

ROHRET RD

Good

Over: BRANCH OLD MANS CREEK

079083001, Johnson, IA

Built 2022 Load: 43.7 t ADT: 90

F36 PUTNAM RD

Good

Over: RAPID CREEK

080050908, Johnson, IA

Built 2021 Load: 44.1 t ADT: 180

IA 1

Good

Over: STREAM

0.6 mi. N of SR F52, Johnson, IA

Built 2020 Load: 44.4 t ADT: 6,300

W38 BLACK HAWK AVE

Good

Over: OLD MANS CREEK

078080504, Johnson, IA

Built 2020 Load: 44.4 t ADT: 80

SE 680TH ST

Good

Over: RICHEY CR

077053501, Johnson, IA

Built 1996 Load: 45.4 t ADT: 60

RAPID CREEK RD

Good

Over: BR RAPID CR

T80N, R5W, 29, Johnson, IA

Built 2019 Load: 46.7 t ADT: 490

F28 MEHAFFEY BR RD

Good

Over: IOWA RIVER

32R6WT80N, Johnson, IA

Built 2015 Load: 47.6 t ADT: 5,100

NB US 218

Good

Over: CROOKED CREEK

2.3 mi. S of SR F62., Johnson, IA

Built 1982 Load: 52.6 t ADT: 9,650

STRAWBRIDGE RD

Good

Over: RAPID CREEK

T80NR5W, 9 & 16, Johnson, IA

Built 2019 Load: 53.1 t ADT: 11

280TH ST

Good

Over: STREAM

080052103, Johnson, IA

Built 1993 Load: 55.1 t ADT: 50

FM SW ANGLE AVE

Good

Over: DEER CREEK

078083209, Johnson, IA

Built 1995 Load: 55.5 t ADT: 140

SB US 218

Good

Over: OLD MAN CREEK OVERFLOW

0.6 MI. N of Jct. SR F62, Johnson, IA

Built 1983 Load: 59.1 t ADT: 10,250

US 6

Good

Over: CLEAR CREEK

0.3 mi. W of Jct. 1st Ave, Johnson, IA

Built 1998 Load: 62.0 t ADT: 26,600

LOWER W BR RD

Good

Over: WAPSINONOC CR

T79N,R05W, Section 11, Johnson, IA

Built 2017 Load: 79.1 t ADT: 120

UTAH AVE SE

Poor

Over: STREAM

078053302, Johnson, IA

Built 1990 ADT: 46

SW JAMES AVE

Poor

Over: STREAM

078072202, Johnson, IA

Built 1956 ADT: 41

IOWA JOHNSON RD

Poor

Over: STREAM

079081904, Johnson, IA

Built 1925 ADT: 11

DERBY AVE SW

Poor

Over: STREAM

078083402, Johnson, IA

Built 1954 Load: 2.7 t ADT: 60

NE 340TH ST

Poor

Over: SMALL

079050107, Johnson, IA

Built 1900 Load: 5.4 t ADT: 11

FM SW COSGRV RD

Poor

Over: N BR OLD MAN'S CREEK

079082502, Johnson, IA

Built 1960 Load: 9.1 t ADT: 620

DINGLEBERRY RD

Poor

Over: RAPID CR

080052005, Johnson, IA

Built 1960 Load: 9.1 t ADT: 398

FM LOU FALL RD

Poor

Over: BR IOWA RIVER

081072103, Johnson, IA

Built 1956 Load: 10.8 t ADT: 265

MAIER AVE

Poor

Over: PICAYUNE CR

078061904, Johnson, IA

Built 1915 Load: 13.5 t ADT: 10

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.