Mitchell County, IA

160 public highway bridges

Mitchell County Bridge Snapshot

Mitchell County, Iowa contains 160 public highway bridges in the FHWA National Bridge Inventory. Roughly 47.5% are rated “Good,” 43.1% “Fair,” 9.4% “Poor,” and 9.4% 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.

160

Total Bridges

47.5%

Good

9.4%

Poor

9.4%

Structurally Deficient

Condition Distribution

Good

47.5% (76)

Fair

43.1% (69)

Poor

9.4% (15)

SD

9.4% (15)

All Bridges (160)

Sort:

CAMEO AVE

Over: CREEK

100182802, Mitchell, IA

Built 1919 Load: 13.6 t ADT: 285

LANCER AVE

Over: BIG CEDAR RIVER

097170208, Mitchell, IA

Built 2002 Load: 14.1 t ADT: 1,905

340TH

Over: SPRING CREEK

097160501, Mitchell, IA

Built 1927 Load: 14.5 t ADT: 97

395TH

Over: BURR OAK CREEK

098160503, Mitchell, IA

Built 1920 Load: 14.5 t ADT: 15

385TH

Over: BURR OAK CREEK

098160903, Mitchell, IA

Built 1954 Load: 17.2 t ADT: 29

ECHO AVE

Over: ROCK CREEK

098182204, Mitchell, IA

Built 1920 Load: 17.2 t ADT: 44

KIRKWOOD AVE

Over: CREEK

097171404, Mitchell, IA

Built 1930 Load: 18.1 t ADT: 39

385TH

Over: SMALL STREAM

098171203, Mitchell, IA

Built 1973 Load: 18.1 t ADT: 49

DANCER AVE

Over: ROCK CREEK

098181502, Mitchell, IA

Built 1925 Load: 19.0 t ADT: 11

BALSAM AVE

Over: CREEK

100182004, Mitchell, IA

Built 1930 Load: 20.9 t ADT: 20

OLD IA 105

Over: TURTLE CREEK

099182306, Mitchell, IA

Built 1930 Load: 21.3 t ADT: 746

325TH

Over: ROCK CREEK

097170703, Mitchell, IA

Built 1956 Load: 21.8 t ADT: 44

CAMEO AVE

Over: ROCK CREEK

098180902, Mitchell, IA

Built 1974 Load: 22.4 t ADT: 33

430TH

Over: BEAVER CREEK

099151901, Mitchell, IA

Built 1953 Load: 22.7 t ADT: 403

420TH

Over: BIG CEDAR RIVER

099182603, Mitchell, IA

Built 1963 Load: 22.7 t ADT: 422

465TH

Over: DRAINAGE

100173303, Mitchell, IA

Built 1935 Load: 22.7 t ADT: 619

KIRKWOOD AVE

Over: ROCK CREEK

097171404, Mitchell, IA

Built 1955 Load: 23.3 t ADT: 39

NOBLE AVE

Over: CREEK

097160504, Mitchell, IA

Built 1974 Load: 23.6 t ADT: 29

WALNUT AVE

Over: SMALL STREAM

099150202, Mitchell, IA

Built 1950 Load: 24.5 t ADT: 462

JERSEY AVE

Over: SUGAR CREEK

098171002, Mitchell, IA

Built 1975 Load: 25.2 t ADT: 49

350TH

Over: SPRING CREEK

098163201, Mitchell, IA

Built 1973 Load: 25.4 t ADT: 33

VALLEY AVE

Over: CREEK

097150302, Mitchell, IA

Built 1971 Load: 25.6 t ADT: 33

450TH

Over: SMALL STREAM

099161201, Mitchell, IA

Built 1974 Load: 26.3 t ADT: 33

380TH

Over: LITTLE CEDAR RIVER

098161303, Mitchell, IA

Built 1979 Load: 27.2 t ADT: 44

430TH

Over: LITTLE CEDAR RIVER

099161503, Mitchell, IA

Built 1984 Load: 27.2 t ADT: 403

PRIMROSE AVE

Over: BURR OAK CREEK

098161006, Mitchell, IA

Built 1960 Load: 28.2 t ADT: 501

470TH

Over: WAPSIPINICON RIVER

100153401, Mitchell, IA

Built 1984 Load: 29.0 t ADT: 295

480TH

Over: BIG CEDAR RIVER

100182801, Mitchell, IA

Built 1979 Load: 29.0 t ADT: 216

UNDERWOOD AVE

Over: CREEK

097150402, Mitchell, IA

Built 1970 Load: 29.9 t ADT: 570

GLASS AVE

Over: ROCK CREEK

097170702, Mitchell, IA

Built 1977 Load: 29.9 t ADT: 678

NOBLE AVE

Over: SPRING CREEK

098162902, Mitchell, IA

Built 1977 Load: 30.8 t ADT: 59

410TH

Over: BURR OAK CREEK

099163101, Mitchell, IA

Built 1975 Load: 30.8 t ADT: 30

ORCHARD RD

Over: SPRING CREEK

097160708, Mitchell, IA

Built 1980 Load: 31.7 t ADT: 520

JERSEY AVE

Over: ROCK OAK CREEK

097171506, Mitchell, IA

Built 1974 Load: 31.7 t ADT: 34

RAMPART AVE

Over: CREEK

100162402, Mitchell, IA

Built 1967 Load: 31.7 t ADT: 167

US 218

Over: SPRING CREEK

0.2 mi. S of S Jct. IA 9, Mitchell, IA

Built 1975 Load: 32.1 t ADT: 2,030

340TH

Over: CREEK

097160101, Mitchell, IA

Built 1972 Load: 32.7 t ADT: 20

340TH

Over: CREEK

097170401, Mitchell, IA

Built 2001 Load: 32.7 t ADT: 78

400TH

Over: SOAP CREEK

098150401, Mitchell, IA

Built 1992 Load: 32.7 t ADT: 15

390TH

Over: WAPSIPINICON RIVER

098151203, Mitchell, IA

Built 1995 Load: 32.7 t ADT: 33

UNDERWOOD AVE

Over: CREEK

098153302, Mitchell, IA

Built 1994 Load: 32.7 t ADT: 570

NOBLE AVE

Over: SPRING CREEK

098162002, Mitchell, IA

Built 2002 Load: 32.7 t ADT: 49

460TH ST

Over: WAPSIPINICON

099150301, Mitchell, IA

Built 1983 Load: 32.7 t ADT: 118

490TH

Over: CREEK

100162201, Mitchell, IA

Built 1992 Load: 32.7 t ADT: 44

LOCAL

Over: BIG CEDAR RIVER

100180801, Mitchell, IA

Built 1978 Load: 32.7 t ADT: 49

ECHO AVE

Over: OTTER CREEK

100182302, Mitchell, IA

Built 1930 Load: 32.7 t ADT: 59

325TH

Over: SMALL STREAM

097181203, Mitchell, IA

Built 1985 Load: 33.6 t ADT: 29

CAMEO AVE

Over: CREEK

098182102, Mitchell, IA

Built 1920 Load: 33.6 t ADT: 26

480TH ST

Over: CREEK

100162505, Mitchell, IA

Built 1970 Load: 33.6 t ADT: 44

400TH

Over: CREEK

098150201, Mitchell, IA

Built 1978 Load: 34.5 t ADT: 29

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

Related

Browse all → | Rankings →

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026