Dubuque County, IA

304 public highway bridges

Dubuque County Bridge Snapshot

Dubuque County, Iowa contains 304 public highway bridges in the FHWA National Bridge Inventory. Roughly 41.4% are rated “Good,” 35.5% “Fair,” 8.9% “Poor,” and 8.9% 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.

304

Total Bridges

41.4%

Good

8.9%

Poor

8.9%

Structurally Deficient

Condition Distribution

Good

41.4% (126)

Fair

35.5% (108)

Poor

8.9% (27)

SD

8.9% (27)

All Bridges (304)

Sort:

HOCHREIN RD

Over: DRAINAGE

090E12505, Dubuque, IA

Built 2006 Load: 32.7 t ADT: 60

FINLEYS LANDING

Over: BASSWOOD CREEK

000000000, Dubuque, IA

Built 2010 Load: 32.7 t ADT: 329

FINLEYS LANDING

Over: BASSWOOD CREEK

00000, Dubuque, IA

Built 2010 Load: 32.7 t ADT: 329

HERBER RD

Over: DRAINAGE DITCH

R1ET89N35, Dubuque, IA

Built 2015 Load: 32.7 t ADT: 1,908

SLEEPY HOLLOW RD

Over: BLOODY RUN CREEK

090E22805, Dubuque, IA

Built 2016 Load: 32.7 t ADT: 50

MCALLISTER RD

Over: STREAM

08701003, Dubuque, IA

Built 2021 Load: 32.7 t ADT: 78

LOUISE LANE

Over: BORDEAUX RUN

N.W. OF PERU RD, Dubuque, IA

Built 2009 Load: 32.7 t ADT: 684

W 32ND STREET

Over: BEE BRANCH

N.E. OF WILDWOOD DR, Dubuque, IA

Built 2009 Load: 32.7 t ADT: 4,322

URBAIN RD

Over: CREEK

087E10607, Dubuque, IA

Built 2018 Load: 33.0 t ADT: 15

LOCAL

Over: CURREN BRANCH

088012704, Dubuque, IA

Built 1986 Load: 33.3 t ADT: 26

DRY HOLLOW RD

Over: CREEK

089013305, Dubuque, IA

Built 2013 Load: 33.7 t ADT: 20

HARTBECKE RD

Over: CURRAN-WHITEWATER CREEK

088012106, Dubuque, IA

Built 2012 Load: 34.3 t ADT: 49

PRAIRIE CREEK RD

Over: CREEK

087E10303, Dubuque, IA

Built 2018 Load: 34.7 t ADT: 59

REA RD

Over: CREEK

087E11602, Dubuque, IA

Built 2017 Load: 34.7 t ADT: 25

WUCHTER RD

Over: CREEK

088020406, Dubuque, IA

Built 2013 Load: 34.7 t ADT: 70

FM

Over: CREEK

088E20906, Dubuque, IA

Built 2006 Load: 35.0 t ADT: 450

PITZ RD

Over: BUNCOMBE CREEK

R2ET87NS1SE, Dubuque, IA

Built 2012 Load: 35.3 t ADT: 44

LOCAL

Over: LITTLE MAQUOKETA RIVER

089E20505, Dubuque, IA

Built 1992 Load: 35.3 t ADT: 737

FM

Over: BLOODY RUN CREEK

090E22806, Dubuque, IA

Built 2001 Load: 35.3 t ADT: 1,119

NB US 61 RAMP

Over: VACANT LOTS

IN DUBUQUE AT KERPER BLVD, Dubuque, IA

Built 1991 Load: 35.4 t ADT: 3,650

SB NW ARTERIAL

Over: OVER CC RR & CATFISH CK

0.2 MI. N OF JCT. US 20, Dubuque, IA

Built 1997 Load: 35.6 t ADT: 4,696

US 61 OFF RAMP

Over: GRANGER CREEK

US 61 CONNECTOR, Dubuque, IA

Built 2019 Load: 35.6 t ADT: 756

IA 3

Over: STREAM

0.1 mi. S of jct. SR D10, Dubuque, IA

Built 1974 Load: 36.9 t ADT: 5,100

US 20 RAMPS

Over: DRAINAGE DITCH

JCT US 20 & SR Y17, Dubuque, IA

Built 1988 Load: 37.5 t ADT: 1,010

ARENSDORF RD

Over: OTTER CREEK

087E23601, Dubuque, IA

Built 2019 Load: 37.6 t ADT: 88

OLDE MASSEY RD

Over: CREEK

088E31504, Dubuque, IA

Built 2018 Load: 37.6 t ADT: 471

BIERMAN RD

Over: WHITEWATER CREEK

088011416, Dubuque, IA

Built 2019 Load: 37.6 t ADT: 39

Y21 BUDD RD

Over: CREEK

089E11011, Dubuque, IA

Built 2018 Load: 37.6 t ADT: 314

PAPE RD

Over: HEWITT CREEK

089022203, Dubuque, IA

Built 2017 Load: 37.9 t ADT: 97

BOY SCOUT RD

Over: MID. FK LITTLE MAQUOKETA

090E13503, Dubuque, IA

Built 2006 Load: 37.9 t ADT: 120

MILLVILLE RD

Over: STREAM

089013607, Dubuque, IA

Built 2021 Load: 38.2 t ADT: 59

WORTHINGTON RD

Over: CREEK

088021703, Dubuque, IA

Built 2019 Load: 38.6 t ADT: 69

US 151 SB

Over: PRARIE CREEK

1.9 MI N. of Jct. SR Y21, Dubuque, IA

Built 2003 Load: 38.8 t ADT: 2,750

STEGER RD

Over: STREAM

087021603, Dubuque, IA

Built 2021 Load: 38.9 t ADT: 33

DURANGO RD

Over: CREEK

090e23108, Dubuque, IA

Built 2017 Load: 38.9 t ADT: 314

FLANNAGAN RD

Over: N FORK LITTLE MAQUKETA

9001 15 4050, Dubuque, IA

Built 2016 Load: 38.9 t ADT: 88

RHOMBERG AVE

Over: BEE BRANCH

N OF KNEIST ST, Dubuque, IA

Built 2017 Load: 39.2 t ADT: 4,648

US 151 SB

Over: WHITEWATER CREEK

1.8 mi. S of Jct. SR D53, Dubuque, IA

Built 2003 Load: 40.0 t ADT: 4,650

BUNCOMBE RD

Over: BUNCOMBE CREEK

087E21503, Dubuque, IA

Built 2019 Load: 40.2 t ADT: 30

KARPER HARBOR RD

Over: JOHNS CREEK

087010704, Dubuque, IA

Built 2021 Load: 40.2 t ADT: 90

COTTINGHAM RD

Over: CREEK

088E10104, Dubuque, IA

Built 2017 Load: 40.2 t ADT: 412

CHESTERMAN RD

Over: SOUTH FORK CATFISH CREEK

088E10203, Dubuque, IA

Built 2021 Load: 40.2 t ADT: 70

PILOT GROVE RD

Over: WHITE WATER CREEK

088012403, Dubuque, IA

Built 2013 Load: 40.2 t ADT: 79

E WORTHINGTON

Over: JOHN'S CREEK

088023401, Dubuque, IA

Built 2013 Load: 40.2 t ADT: 481

HALES MILL RD

Over: CREEK

089E20705, Dubuque, IA

Built 2018 Load: 40.2 t ADT: 1,375

DERBY GRANGE RD

Over: CLOIE BRANCH

089E20710, Dubuque, IA

Built 2020 Load: 40.2 t ADT: 638

HICKORY VALLEY RD

Over: HEWITT CREEK

089021406, Dubuque, IA

Built 2022 Load: 40.2 t ADT: 108

PLUM CREEK RD

Over: N FK LITTLE MAQUOKETA

T90NR1W240040, Dubuque, IA

Built 2016 Load: 40.2 t ADT: 26

MINES OF SPAIN

Over: CATFISH CREEK

IN MINES OF SPAIN ST. PK., Dubuque, IA

Built 1993 Load: 40.5 t

LEUCHS RD

Over: CURRAM BRANCH

8801 19 9500, Dubuque, IA

Built 2016 Load: 40.8 t ADT: 59

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

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