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)

IA 187

Unknown

Over: US 20

AT JCT. OF US 20, Buchanan, IA

Built 1970 ADT: 5,700

YORK AVE

Unknown

Over: US 20

1.5 MI E OF JCT. IA 187, Buchanan, IA

Built 1970 ADT: 6,500

FM V-71

Unknown

Over: I 380

2.0 mi. N of S.R. D48, Buchanan, IA

Built 1983 ADT: 17,300

EB US 20

Unknown

Over: IA 150

AT JCT.150, Buchanan, IA

Built 1978 ADT: 3,450

WB US 20

Unknown

Over: IA 150

AT JCT. 150, Buchanan, IA

Built 1978 ADT: 3,450

W 35

Unknown

Over: US 20

2.5 MI. E OF JCT. 150, Buchanan, IA

Built 1978 ADT: 8,400

SR W-40

Unknown

Over: US 20

At Jct. SR W40, Buchanan, IA

Built 1978 ADT: 5,600

FM W-45

Unknown

Over: US 20

3.4 mi. W of Jct. IA 187, Buchanan, IA

Built 1978 ADT: 7,000

FM V-65

Unknown

Over: US 20

At Jct. US 20 & SR V65, Buchanan, IA

Built 1980 ADT: 9,100

V71

Unknown

Over: US 20

6.0 MI. W OF JCT. 150, Buchanan, IA

Built 1980 ADT: 10,100

HENLEY AVE

Unknown

Over: US 20

2.5 MI. W OF JCT. IA 150, Buchanan, IA

Built 1980 ADT: 10,100

IOWA AVE (MHI)

Unknown

Over: US 20

1.5 MI. W OF JCT. IA 150, Buchanan, IA

Built 1980 ADT: 8,700

NB I-380

Unknown

Over: SR D48

At Jct. of SR D48, Buchanan, IA

Built 1984 ADT: 575

I 380 SB

Unknown

Over: D48

At jct. SR D48, Buchanan, IA

Built 1984 ADT: 575

FM W-17

Unknown

Over: I-380

0.9 mi. N of Jct. SR D48, Buchanan, IA

Built 1984 ADT: 17,300

FM V-65

Unknown

Over: I-380

At Jct. I-380 & S.R. V65, Buchanan, IA

Built 1984 ADT: 16,400

LOC 100TH ST

Fair

Over: BUFFALO CR

090080301, Buchanan, IA

Built 1940 Load: 4.5 t ADT: 40

LOCAL DUGAN AVE

Fair

Over: LIME CR

087103404, Buchanan, IA

Built 1952 Load: 10.0 t ADT: 196

FM

Fair

Over: PINE CREEK

089082907, Buchanan, IA

Built 1960 Load: 10.4 t ADT: 34

FM

Fair

Over: LIME CREEK

087102603, Buchanan, IA

Built 1954 Load: 12.6 t ADT: 80

FM 140TH ST

Fair

Over: SMALL STREAM

090092701, Buchanan, IA

Built 1958 Load: 13.0 t ADT: 147

FM LAWRENCE AVE

Fair

Over: SMALL STREAM

090091302, Buchanan, IA

Built 1953 Load: 13.3 t ADT: 41

LOCAL

Fair

Over: PRAIRIE CR

089070402, Buchanan, IA

Built 1953 Load: 13.9 t ADT: 16

LOCAL

Fair

Over: PRAIRIE CR

089070902, Buchanan, IA

Built 1953 Load: 13.9 t ADT: 30

LOCALIOWA AVE

Fair

Over: BEAR CR

087092004, Buchanan, IA

Built 1953 Load: 14.2 t ADT: 35

LOCAL 310TH ST

Fair

Over: LIME CR

087102303, Buchanan, IA

Built 1957 Load: 14.2 t ADT: 59

FM 250TH ST

Fair

Over: SMALL STREAM

088072301, Buchanan, IA

Built 1957 Load: 15.3 t ADT: 100

FM STEWART AV

Fair

Over: SMITH CREEK

088073004, Buchanan, IA

Built 1958 Load: 15.3 t ADT: 39

FM 140TH ST

Fair

Over: SMALL STREAM

090092601, Buchanan, IA

Built 1958 Load: 15.3 t ADT: 80

LOCAL 335TH ST.

Fair

Over: SMALL STREAM

087083603, Buchanan, IA

Built 1998 Load: 16.2 t ADT: 78

FM 145TH ST

Fair

Over: LITTLE WAPSIPINICON

090102805, Buchanan, IA

Built 1965 Load: 16.2 t ADT: 137

VINCENT AVE

Fair

Over: DRY CREEK

087072704, Buchanan, IA

Built 1960 Load: 16.8 t ADT: 11

FM LAPORTE RD

Fair

Over: MUD CREEK

087101909, Buchanan, IA

Built 1967 Load: 16.9 t ADT: 314

1ST ST W

Fair

Over: WAPSIPINICON RIVER

T89N-R9W-S34-N0.0-E85.2, Buchanan, IA

Built 1917 Load: 17.0 t ADT: 10,258

165TH ST

Fair

Over: SMALL CREEK

10W89N036050, Buchanan, IA

Built 1900 Load: 17.0 t ADT: 104

320TH ST

Fair

Over: DRAINAGE

087093003, Buchanan, IA

Built 2005 Load: 17.3 t ADT: 30

LOCAL 260TH ST

Fair

Over: BUFFALO CREEK

088072701, Buchanan, IA

Built 1949 Load: 17.5 t ADT: 62

IA 187

Fair

Over: STREAM

0.2 mi. N of Jct. SR C57, Buchanan, IA

Built 1960 Load: 18.1 t ADT: 1,560

NOLAN AVE

Fair

Over: SAND CREEK

087082002, Buchanan, IA

Built 2012 Load: 18.4 t ADT: 30

CARTER AVE

Fair

Over: SMALL STREAM

087102904, Buchanan, IA

Built 1952 Load: 18.8 t ADT: 62

INDIANA AVE

Fair

Over: OTTER CR

090092804, Buchanan, IA

Built 2010 Load: 18.8 t ADT: 62

FM

Fair

Over: BUCK CREEK

090102903, Buchanan, IA

Built 1965 Load: 18.8 t ADT: 88

LOCAL 330TH ST

Fair

Over: WALTON CREEK

087073501, Buchanan, IA

Built 2006 Load: 19.0 t ADT: 41

FM

Fair

Over: BUFFALO CREEK

089081301, Buchanan, IA

Built 1962 Load: 19.4 t ADT: 88

LOC 110TH ST

Fair

Over: SMALL STREAM

090090701, Buchanan, IA

Built 1963 Load: 19.4 t ADT: 73

LOCAL

Fair

Over: SMALL STREAM

088072703, Buchanan, IA

Built 2005 Load: 19.5 t ADT: 39

LOCAL 250TH ST

Fair

Over: SMALL CREEK

088082103, Buchanan, IA

Built 1957 Load: 19.6 t ADT: 91

PINE CREEK AVE

Fair

Over: SMALL STREAM

088082108, Buchanan, IA

Built 1957 Load: 19.6 t ADT: 118

LOCAL 265TH ST

Fair

Over: SPRING CREEK

088102903, Buchanan, IA

Built 1959 Load: 19.6 t ADT: 20

LOC HARRISON AV

Fair

Over: SMALL STREAM

090090502, Buchanan, IA

Built 1959 Load: 19.6 t ADT: 73

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