Johnson County, IA

317 public highway bridges

Johnson County Bridge Snapshot

Johnson County, Iowa contains 317 public highway bridges in the FHWA National Bridge Inventory. Roughly 33.4% are rated “Good,” 45.1% “Fair,” 8.2% “Poor,” and 8.2% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in IA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

317
Total Bridges
33.4%
Good
8.2%
Poor
8.2%
Structurally Deficient

Condition Distribution

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

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

RAPID CK RD

Poor

Over: BR RAPID CR

080053103, Johnson, IA

Built 1950 Load: 14.3 t ADT: 490

FM NE RPD CK RD

Poor

Over: BR RAPID CR

080052105, Johnson, IA

Built 1950 Load: 14.5 t ADT: 130

EAGLE AVE

Poor

Over: BRADLEY CR

079082704, Johnson, IA

Built 1915 Load: 14.9 t ADT: 31

JOHNSON-IOWA RD

Poor

Over: BR OLD MANS CR

079083102, Johnson, IA

Built 1915 Load: 14.9 t ADT: 5

VAN BUREN ST

Poor

Over: RALSTON CREEK

079061500, Johnson, IA

Built 1935 Load: 17.0 t ADT: 1,082

SW 520TH ST

Poor

Over: DEER CREEK

078082001, Johnson, IA

Built 1900 Load: 17.5 t ADT: 35

120TH ST

Poor

Over: STREAM

081050901, Johnson, IA

Built 1952 Load: 18.8 t ADT: 30

Read our methodology — how this data is sourced, computed, and verified.

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial