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)

Sort:

112TH ST

Over: BUCK CREEK

090100703, Buchanan, IA

Built 2001 Load: 52.9 t ADT: 25

LOCAL 290TH ST

Over: DRY CREEK

087070901, Buchanan, IA

Built 2003 Load: 72.6 t ADT: 5

LOCAL

Over: SMALL STREAM

089091604, Buchanan, IA

Built 2010 Load: 17.5 t ADT: 51

SCOTT BLVD

Over: SMALL STREAM

087080104, Buchanan, IA

Built 2014 Load: 18.4 t ADT: 51

170TH ST

Over: PRAIRIE CREEK

089070801, Buchanan, IA

Built 2014 Load: 18.4 t ADT: 44

LOCAL 250TH ST

Over: SMALL STREAM

088082301, Buchanan, IA

Built 2010 Load: 18.6 t ADT: 98

LOCAL

Over: SPRING CR

088103201, Buchanan, IA

Built 2005 Load: 19.8 t ADT: 26

LOCAL 270TH ST

Over: SMITH CR

088083601, Buchanan, IA

Built 2004 Load: 24.5 t ADT: 73

LOC 150TH ST

Over: SMALL CREEK

090073601, Buchanan, IA

Built 2004 Load: 26.6 t ADT: 34

I-380

Over: MUD CREEK

1.4 Mi. S OF Jct. SR V65, Buchanan, IA

Built 1983 Load: 28.0 t ADT: 17,700

CARTER AVE

Over: SMALL STREAM

089103304, Buchanan, IA

Built 2004 Load: 28.5 t ADT: 135

130TH ST

Over: SMALL STREAM

090072401, Buchanan, IA

Built 2016 Load: 30.4 t ADT: 50

150TH ST

Over: SMALL STREAM

090073103, Buchanan, IA

Built 2018 Load: 30.4 t ADT: 60

OVERLAND AVE

Over: SMALL STREAM

0870821, Buchanan, IA

Built 2020 Load: 30.4 t ADT: 20

LOCAL 190TH ST

Over: MALONE CR

089092403, Buchanan, IA

Built 2004 Load: 31.8 t ADT: 21

IA 150

Over: BEAR CREEK

0.9 Mi. N of CR D-47, Buchanan, IA

Built 2013 Load: 32.4 t ADT: 4,650

THOMAS AVE

Over: SMALL STREAM

087073106, Buchanan, IA

Built 2014 Load: 32.4 t ADT: 59

LOCAL SCOTT

Over: SMITH CR

087080204, Buchanan, IA

Built 1989 Load: 32.4 t ADT: 51

OVERLAND AVE

Over: SMALL STREAM

087081602, Buchanan, IA

Built 2020 Load: 32.4 t ADT: 30

MICHEL AVE

Over: SMALL CREEK

00000, Buchanan, IA

Built 2011 Load: 32.4 t ADT: 25

IOWA AVE

Over: SMALL STREAM

087090804, Buchanan, IA

Built 2004 Load: 32.4 t ADT: 79

LOCAL 320TH ST.

Over: SMALL STREAM

087092903, Buchanan, IA

Built 1999 Load: 32.4 t ADT: 26

288TH STREET

Over: SMALL STREAM

087100611, Buchanan, IA

Built 2000 Load: 32.4 t ADT: 11

LOCAL FROST AVE

Over: SMALL STREAM

087101104, Buchanan, IA

Built 2003 Load: 32.4 t ADT: 21

LOCAL 295TH ST.

Over: SMALL STREAM

087101105, Buchanan, IA

Built 2004 Load: 32.4 t ADT: 11

BUTLER AVE

Over: SMALL STREAM

087101912, Buchanan, IA

Built 2006 Load: 32.4 t ADT: 30

228TH ST

Over: SMALL STREAM

088070503, Buchanan, IA

Built 2012 Load: 32.4 t ADT: 51

QUASQUETON BLVD

Over: SMALL STREAM

088082703, Buchanan, IA

Built 2014 Load: 32.4 t ADT: 776

LEE AVENUE

Over: SMALL STREAM

088092308, Buchanan, IA

Built 2000 Load: 32.4 t ADT: 44

KING AVE

Over: SMALL STREAM

R9WT88N350071, Buchanan, IA

Built 2013 Load: 32.4 t ADT: 62

VICTOR AVE

Over: PRAIRIE CREEK

089071502, Buchanan, IA

Built 2014 Load: 32.4 t ADT: 42

208TH STREET

Over: SMALL STREAM

089072505, Buchanan, IA

Built 1992 Load: 32.4 t ADT: 47

215TH ST

Over: SMALL STREAM

8908318550, Buchanan, IA

Built 2016 Load: 32.4 t ADT: 26

LOCAL

Over: SMALL STREAM

089090601, Buchanan, IA

Built 2006 Load: 32.4 t ADT: 47

LOC GRANT AVE

Over: SMALL STREAM

089090704, Buchanan, IA

Built 1973 Load: 32.4 t ADT: 104

LOCAL

Over: SMALL STREAM

089101011, Buchanan, IA

Built 2005 Load: 32.4 t ADT: 73

RIVER RD BLVD

Over: SMALL STREAM

089101303, Buchanan, IA

Built 2000 Load: 32.4 t ADT: 73

LOCAL

Over: SMALL STREAM

08910275000, Buchanan, IA

Built 2005 Load: 32.4 t ADT: 15

LOC UNION AVE

Over: SMALL STREAM

090070404, Buchanan, IA

Built 1988 Load: 32.4 t ADT: 11

LOC 100TH ST

Over: STREAM

090070501, Buchanan, IA

Built 1995 Load: 32.4 t ADT: 44

136TH ST

Over: BUFFALO CR

090082405, Buchanan, IA

Built 2008 Load: 32.4 t ADT: 16

LOC 108TH ST

Over: SMALL STREAM

090090207, Buchanan, IA

Built 1987 Load: 32.4 t ADT: 29

KENTUCKY AVE

Over: SMALL STREAM

090092302, Buchanan, IA

Built 2012 Load: 32.4 t ADT: 41

DEACON AVE

Over: SMALL STREAM

090101002, Buchanan, IA

Built 2015 Load: 32.4 t ADT: 82

DILLON AVE

Over: SMALL STREAM

090102206, Buchanan, IA

Built 2015 Load: 32.4 t ADT: 113

275TH ST

Over: SMALL STREAM

8810321050, Buchanan, IA

Built 2011 Load: 32.4 t ADT: 25

275TH ST

Over: SMALL STREAM

8810319050, Buchanan, IA

Built 2011 Load: 32.4 t ADT: 25

WASHINGTON AVE

Over: SMALL CREEK

8807260065, Buchanan, IA

Built 2013 Load: 32.4 t ADT: 15

180TH ST

Over: MALONE CREEK

T89NR9WS14E25S80, Buchanan, IA

Built 2004 Load: 32.4 t ADT: 11

OVERLAND AVE

Over: DRAINAGE

north of Linn Buchanan in, Buchanan, IA

Built 2015 Load: 32.4 t ADT: 59

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026