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:

3RD ST

Over: SMALL STREAM

000000000, Johnson, IA

Built 1980 Load: 16.5 t ADT: 260

400TH ST

Over: WAPSINONOE CREEK

079052301, Johnson, IA

Built 1977 Load: 16.8 t ADT: 80

FM

Over: PICAYUNE CR

078072906, Johnson, IA

Built 1976 Load: 17.1 t ADT: 240

NE 340TH ST

Over: STREAM

079050201, Johnson, IA

Built 1952 Load: 17.1 t ADT: 51

FM 310TH ST

Over: STREAM

080052503, Johnson, IA

Built 1900 Load: 17.1 t ADT: 60

TAFT AVE

Over: STREAM

081051804, Johnson, IA

Built 1970 Load: 17.1 t ADT: 31

FM JOHNS-IOWA R

Over: STREAM

081080602, Johnson, IA

Built 1966 Load: 17.1 t ADT: 730

SE WHITE OAK AV

Over: BIG SLOUGH CR

078051104, Johnson, IA

Built 1920 Load: 18.0 t ADT: 35

US 6

Over: STREAM

3.1 MI. E OF JCT. SR W38, Johnson, IA

Built 1953 Load: 18.1 t ADT: 5,200

US 6

Over: PIG RUN CREEK

4.1 mi. E of Jct. SR W-38, Johnson, IA

Built 1923 Load: 18.1 t ADT: 5,200

140TH ST NE

Over: STREAM

081071603, Johnson, IA

Built 1977 Load: 18.2 t ADT: 663

SW OBSERVATORY

Over: BRANCH OF CROOKED CREEK

078062804, Johnson, IA

Built 1984 Load: 18.3 t ADT: 122

SE 660TH ST

Over: PRAIRIE CR

077052901, Johnson, IA

Built 1930 Load: 19.4 t ADT: 26

W 295TH ST

Over: BR CLEAR CR

080081903, Johnson, IA

Built 1977 Load: 19.4 t ADT: 60

140TH ST NW

Over: KNAPP CREEK

081081601, Johnson, IA

Built 1987 Load: 19.4 t ADT: 50

US 6

Over: RALSTON CREEK

0.3 MI. E OF E JCT. IA #1, Johnson, IA

Built 1957 Load: 20.9 t ADT: 27,000

FM MORSE RD

Over: RAPID CR

080050903, Johnson, IA

Built 1930 Load: 21.2 t ADT: 1,220

US 6

Over: IOWA RIVER

0.2 MI. E OF E JCT. IA 1, Johnson, IA

Built 1957 Load: 21.4 t ADT: 27,000

FM-BLACKHAWK AV

Over: CLEAR CREEK

080082904, Johnson, IA

Built 1995 Load: 21.6 t ADT: 1,200

WATER STREET NE

Over: WEST HOOSIER CREEK

0810703, Johnson, IA

Built 2010 Load: 22.3 t ADT: 49

WAPSIE RD

Over: STREAM

080052106, Johnson, IA

Built 1965 Load: 22.5 t ADT: 102

FM MAHAFFY BR R

Over: STREAM

081062806, Johnson, IA

Built 2000 Load: 23.7 t ADT: 3,730

TAFT AVE

Over: STREAM

079053202, Johnson, IA

Built 1966 Load: 24.5 t ADT: 734

MUSCATINE AVE

Over: RALSTON CK S BRANCH

079061400, Johnson, IA

Built 1972 Load: 24.5 t ADT: 9,524

SW BLACKHAWK AV

Over: MILLER CREEK

078081904, Johnson, IA

Built 2004 Load: 24.6 t ADT: 11

NB I-380

Over: IOWA RIVER

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

Built 1972 Load: 24.7 t ADT: 27,200

FM SUTLIFF RD

Over: CEDAR RIVER

081051105, Johnson, IA

Built 1983 Load: 24.9 t ADT: 480

SW OBSERVTY AVE

Over: OLD MANS CREEK

078062105, Johnson, IA

Built 1980 Load: 25.1 t ADT: 290

FM SAND RD

Over: SNYDER CREEK

078060204, Johnson, IA

Built 1964 Load: 25.3 t ADT: 2,620

SB I-380

Over: IOWA RIVER

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

Built 1972 Load: 25.4 t ADT: 27,200

FM 660TH ST

Over: RICHEY CREEK

077052501, Johnson, IA

Built 1979 Load: 25.5 t ADT: 35

FM 120TH ST

Over: HOOSIER CREEK

081060509, Johnson, IA

Built 1900 Load: 26.2 t ADT: 1,500

HALFMOON AVE

Over: BUFFALO CREEK

080072908, Johnson, IA

Built 1976 Load: 26.5 t ADT: 112

FM SW NAPLES AV

Over: PICAYUNE CREEK

078062002, Johnson, IA

Built 1966 Load: 26.6 t ADT: 70

FM SW BLK DIMND

Over: N BRANCH OLD MAN'S CREEK

079073009, Johnson, IA

Built 1968 Load: 26.6 t ADT: 650

FM SUGAR BTM RD

Over: TURKEY CREEK

080061105, Johnson, IA

Built 1964 Load: 26.6 t ADT: 990

FM

Over: PLUM CREEK

081082403, Johnson, IA

Built 1934 Load: 26.6 t ADT: 130

UTAH AVE

Over: STREAM

077052906, Johnson, IA

Built 1994 Load: 27.6 t ADT: 70

FM IWV RD

Over: N BRANCH OLD MANS CR

079081503, Johnson, IA

Built 2004 Load: 28.2 t ADT: 480

WB I-80

Over: CIC RAILWAY

3.0 mi. E of jct. I-380, Johnson, IA

Built 1963 Load: 28.6 t ADT: 30,600

JOHNSON-IOWA RD

Over: BRANCH TO CLEAR CREEK

080081902, Johnson, IA

Built 1979 Load: 28.6 t ADT: 61

EB I-80

Over: CIC RAILWAY

3.0 mi. E of jct. I-380, Johnson, IA

Built 1963 Load: 28.8 t ADT: 30,600

FM

Over: SNYDER CR

079052901, Johnson, IA

Built 1977 Load: 28.8 t ADT: 130

SW CALKINS AVE

Over: N BR CREEK

079080902, Johnson, IA

Built 1920 Load: 29.4 t ADT: 26

FM SW BLK DIMND

Over: STREAM

079083405, Johnson, IA

Built 1900 Load: 29.4 t ADT: 970

SB IA 1

Over: RALSTON CREEK

2.5 MI. S OF JCT. I-80, Johnson, IA

Built 1953 Load: 29.7 t ADT: 3,650

W 295TH ST

Over: RHINE CREEK

080082803, Johnson, IA

Built 1986 Load: 29.7 t ADT: 102

LOCAL

Over: PLUM CR

081081301, Johnson, IA

Built 1996 Load: 29.7 t ADT: 15

FM SAND RD

Over: PECHMAN CREEK

078062404, Johnson, IA

Built 1976 Load: 29.8 t ADT: 1,210

FM 180TH ST

Over: STREAM

081052303, Johnson, IA

Built 1978 Load: 30.0 t ADT: 180

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

Related

Browse all → | Rankings →

Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

P

Compiled by PlainBridges, Independent data publisher

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.