Buchanan County, IA

281 public highway bridges

Buchanan County Bridge Snapshot

Buchanan County, Iowa contains 281 public highway bridges in the FHWA National Bridge Inventory. Roughly 40.2% are rated “Good,” 48.4% “Fair,” 5.7% “Poor,” and 5.7% 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.

281
Total Bridges
40.2%
Good
5.7%
Poor
5.7%
Structurally Deficient

Condition Distribution

Good
40.2% (113)
Fair
48.4% (136)
Poor
5.7% (16)
SD
5.7% (16)

All Bridges (281)

105TH ST

Good

Over: OTTER CREEK

090090407, Buchanan, IA

Built 2000 Load: 48.2 t ADT: 26

FM THOMAS AVE

Good

Over: DRY CREEK

087073106, Buchanan, IA

Built 1989 Load: 50.0 t ADT: 59

LOCAL UNION AVE

Good

Over: DRY CREEK

087073204, Buchanan, IA

Built 1997 Load: 50.0 t ADT: 98

FM

Good

Over: W BR BUFFALO CREEK

090080506, Buchanan, IA

Built 2004 Load: 50.0 t ADT: 334

FM

Good

Over: W BR BUFFALO CR

090081601, Buchanan, IA

Built 2003 Load: 50.0 t ADT: 373

LOC 150TH ST

Good

Over: HUNTER CR

090093103, Buchanan, IA

Built 2006 Load: 50.0 t ADT: 135

IA 187

Good

Over: PRAIRIE CREEK

1.6 MI. N OF US #20, Buchanan, IA

Built 1989 Load: 50.7 t ADT: 1,960

WASHINGTON AVE

Good

Over: S FORK MAQUOKETA RIVER

090071404, Buchanan, IA

Built 2005 Load: 52.9 t ADT: 88

LOCAL

Good

Over: S FORK MAQUOKETA RIVER

090072303, Buchanan, IA

Built 1997 Load: 52.9 t ADT: 49

FM

Good

Over: BUFFALO CREEK

090081103, Buchanan, IA

Built 2004 Load: 52.9 t ADT: 432

FM

Good

Over: STREAM

090100702, Buchanan, IA

Built 1999 Load: 52.9 t ADT: 34

FM 290 ST.

Good

Over: BEAR CREEK

087090901, Buchanan, IA

Built 2004 Load: 56.4 t ADT: 344

FM

Good

Over: S FK MAQUOKETA RIVER

090070903, Buchanan, IA

Built 1990 Load: 58.1 t ADT: 44

VICTOR AVE

Good

Over: S FORK MAQUOKETA RIVER

9007100059, Buchanan, IA

Built 2016 Load: 80.7 t ADT: 41

130TH ST

Good

Over: HUNTER CREEK

9009198800, Buchanan, IA

Built 2016 Load: 80.7 t ADT: 15

LOC 150TH ST

Poor

Over: OTTER CR

090093201, Buchanan, IA

Built 1953 Load: 8.6 t ADT: 130

PARRISH AVE

Poor

Over: PINE CR

088082804, Buchanan, IA

Built 1960 Load: 16.0 t ADT: 82

PINE CREEK AVE

Poor

Over: SMALL STREAM

089081502, Buchanan, IA

Built 2012 Load: 17.8 t ADT: 30

LOCAL

Poor

Over: SMALL STREAM

089082804, Buchanan, IA

Built 1951 Load: 19.0 t ADT: 15

LOCAL 260TH ST

Poor

Over: LIME CR

088102601, Buchanan, IA

Built 1986 Load: 22.4 t ADT: 41

FM

Poor

Over: WAPSIPINICON RIVER

089100802, Buchanan, IA

Built 1962 Load: 22.7 t ADT: 1,390

FM

Poor

Over: SMALL STREAM

089102201, Buchanan, IA

Built 1957 Load: 25.1 t ADT: 79

RACINE AVE

Poor

Over: DRAINAGE DITCH

088082304, Buchanan, IA

Built 1953 Load: 32.4 t ADT: 2,671

FM

Poor

Over: SMALL STREAM

088082109, Buchanan, IA

Built 1952 Load: 33.0 t ADT: 776

FREEMAN AVE

Poor

Over: SMALL STREAM

088102602, Buchanan, IA

Built 1950 Load: 33.7 t ADT: 21

LOCAL

Poor

Over: SMALL STREAM

089090402, Buchanan, IA

Built 1951 Load: 36.3 t ADT: 30

LOCAL 305TH ST.

Structurally Deficient

Over: LIME CR

087101303, Buchanan, IA

Built 1910 ADT: 16

LOCAL 325TH ST

Structurally Deficient

Over: MUD CR

087102903, Buchanan, IA

Built 1953 ADT: 30

LOCAL

Structurally Deficient

Over: MALONE CR

089092405, Buchanan, IA

Built 1925 Load: 7.1 t ADT: 20

LOC FINLEY AVE

Structurally Deficient

Over: LIME CR

087102710, Buchanan, IA

Built 1925 Load: 26.6 t ADT: 11

LOC TAYLOR AVE

Structurally Deficient

Over: BUFFALO CR

090072902, Buchanan, IA

Built 1951 Load: 33.2 t ADT: 35

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

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