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)

Sort:

FM SAND RD SE

Over: BUCK CREEK

077060204, Johnson, IA

Built 1964 Load: 30.3 t ADT: 1,210

FM SW NAPLES AV

Over: DIRTY FACE CREEK

078061704, Johnson, IA

Built 1980 Load: 30.3 t ADT: 270

FM 500TH ST

Over: BR DIRTY FACE CR

078071409, Johnson, IA

Built 1977 Load: 30.3 t ADT: 270

FM SW KANSAS

Over: STREAM

078071404, Johnson, IA

Built 1978 Load: 30.3 t ADT: 270

SW 360TH ST

Over: N BR CREEK

079080803, Johnson, IA

Built 1965 Load: 30.7 t ADT: 61

ROHRET RD

Over: N FORK OLD MANS CREEK

079082601, Johnson, IA

Built 1978 Load: 30.7 t ADT: 30

NW 120TH ST

Over: STREAM

081080801, Johnson, IA

Built 1966 Load: 30.7 t ADT: 1,250

500TH ST SE

Over: STREAM

078051403, Johnson, IA

Built 1969 Load: 30.8 t ADT: 35

500TH ST

Over: STREAM

078051702, Johnson, IA

Built 1966 Load: 30.8 t ADT: 133

FM 540TH ST

Over: STREAM

078052001, Johnson, IA

Built 1955 Load: 30.8 t ADT: 880

NAPOLEON ST

Over: STREAM

078060203, Johnson, IA

Built 1972 Load: 30.8 t ADT: 388

SW OBSRVTRY AVE

Over: STREAM

078063306, Johnson, IA

Built 1973 Load: 30.8 t ADT: 72

SW JAMES AVE

Over: STREAM

078071502, Johnson, IA

Built 1960 Load: 30.8 t ADT: 41

LOCAL

Over: STREAM

078082102, Johnson, IA

Built 1966 Load: 30.8 t ADT: 61

MORMON TRK BLVD

Over: WILLOW CREEK

079061700, Johnson, IA

Built 1971 Load: 31.6 t ADT: 12,954

SW 400TH ST

Over: OLD MANS CREEK

079082301, Johnson, IA

Built 1975 Load: 32.2 t ADT: 51

NW 160TH ST

Over: STREAM

081082401, Johnson, IA

Built 1993 Load: 32.2 t ADT: 20

SW 480TH ST

Over: BR DIRTY FACE CR

078071101, Johnson, IA

Built 1920 Load: 32.3 t ADT: 61

CHAMBERS AVE

Over: CLEAR CREEK

080082804, Johnson, IA

Built 1977 Load: 32.3 t ADT: 170

LINN-JOHNSON RD

Over: KNAPP CREEK

081080601, Johnson, IA

Built 1984 Load: 32.3 t ADT: 46

IA 1

Over: RALSTON CREEK

0.6 MI. N OF N JCT. US 6, Johnson, IA

Built 1932 Load: 32.5 t ADT: 13,500

FM 340TH ST

Over: STREAM

079070601, Johnson, IA

Built 1900 Load: 32.7 t ADT: 260

JORDAN CK RD

Over: JORDAN CREEK

081062602, Johnson, IA

Built 1971 Load: 32.7 t ADT: 72

1ST AVE

Over: RALSTON CREEK N. BRANCH

079061200, Johnson, IA

Built 1984 Load: 32.7 t ADT: 7,143

GOLFVIEW DRIVE

Over: MUDDY CREEK

East of Crandic RR, Johnson, IA

Built 2012 Load: 32.7 t ADT: 1,480

RACHAEL STREET

Over: MUDDY CREEK

East of Crandic RR, Johnson, IA

Built 2003 Load: 32.7 t ADT: 240

FM PRARE DU CHN

Over: RAPID CREEK

080063504, Johnson, IA

Built 1975 Load: 32.8 t ADT: 1,970

DEER CREEK RD

Over: STREAM

000000000, Johnson, IA

Built 1972 Load: 32.8 t ADT: 1,267

FM SUTLIFF RD

Over: CLEAR CREEK

081050102, Johnson, IA

Built 1974 Load: 32.8 t ADT: 610

FM SE 670TH ST

Over: PRAIRIE CREEK

077053009, Johnson, IA

Built 1966 Load: 33.0 t ADT: 100

580TH ST SE

Over: OTTER CREEK

077060101, Johnson, IA

Built 1964 Load: 33.0 t ADT: 81

FM

Over: STREAM

078071604, Johnson, IA

Built 1900 Load: 33.0 t ADT: 460

FM SW KANAS AVE

Over: PICAYUNE CREEK

078072602, Johnson, IA

Built 1978 Load: 33.0 t ADT: 90

SW 470TH ST

Over: STREAM

078070403, Johnson, IA

Built 1973 Load: 33.1 t ADT: 30

W BENTON ST

Over: WILLOW CREEK

079061700, Johnson, IA

Built 1971 Load: 33.9 t ADT: 6,100

NB US 218

Over: OLD MAN CREEK OVERFLOW

0.6 mi. N of Observ. Ave, Johnson, IA

Built 1983 Load: 33.9 t ADT: 10,250

LOWER OLD HWY 6

Over: STREAM

080082303, Johnson, IA

Built 1900 Load: 34.0 t ADT: 510

FM SW 500TH ST

Over: DEER CREEK

078081701, Johnson, IA

Built 1973 Load: 34.6 t ADT: 690

DEER CK RD

Over: DEER CREEK

079070102, Johnson, IA

Built 1972 Load: 34.6 t ADT: 1,363

ZELLER STREET

Over: MUDDY CREEK

West of Crandic RR, Johnson, IA

Built 1999 Load: 34.7 t ADT: 4,290

HOLIDAY RD

Over: OVER CIC RR

000000000, Johnson, IA

Built 1979 Load: 34.9 t ADT: 5,126

SE SIOUX AVE

Over: CROOKED CREEK

078053102, Johnson, IA

Built 1992 Load: 35.0 t ADT: 40

SW HAZELWOOD AV

Over: STREAM

078070804, Johnson, IA

Built 1966 Load: 35.3 t ADT: 72

LOCAL

Over: STREAM

080061204, Johnson, IA

Built 1972 Load: 35.3 t ADT: 153

SWAN LAKE RD NE

Over: STREAM

080070503, Johnson, IA

Built 1973 Load: 35.3 t ADT: 100

HWY 382

Over: SMALL NATURAL STREAM

081062303, Johnson, IA

Built 1958 Load: 36.0 t ADT: 3,810

FM SW WAPELLO A

Over: BR PRAIRIE CR

077052202, Johnson, IA

Built 1977 Load: 36.0 t ADT: 1,110

S.E.WAPELLO AVE

Over: RICHEY CREEK

077052502, Johnson, IA

Built 1994 Load: 36.0 t ADT: 20

FM SE SIOUX AVE

Over: STREAM

077053004, Johnson, IA

Built 1969 Load: 36.0 t ADT: 110

FM

Over: BUCK CREEK

078052803, Johnson, IA

Built 1991 Load: 36.0 t ADT: 30

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

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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.