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:

HAMMERAND RD

Over: BLOODY RUN CREEK

090E21703, Dubuque, IA

Built 2022 Load: 40.8 t ADT: 285

EAST 22ND ST

Over: BEE BRANCH

NE OF KNEIST/ELM ST, Dubuque, IA

Built 2017 Load: 40.8 t ADT: 4,246

WORTHINGTON RD

Over: CREEK

088021704, Dubuque, IA

Built 2019 Load: 41.1 t ADT: 44

HANNAH RD

Over: CREEK

089010209, Dubuque, IA

Built 2017 Load: 41.1 t ADT: 33

BOCKENSTEDT

Over: MAQUOKETA RIVER

089020704, Dubuque, IA

Built 2019 Load: 41.1 t ADT: 49

FLANNAGAN RD

Over: CREEK

090011303, Dubuque, IA

Built 2016 Load: 41.1 t ADT: 118

X71 CLEAR CREEK RD

Over: CREEK

090021303, Dubuque, IA

Built 2018 Load: 41.1 t ADT: 167

HOSCH RD

Over: CREEK

090023102, Dubuque, IA

Built 2020 Load: 41.1 t ADT: 59

Y17 GUN CLUB RD

Over: LITTLE MAQUOKETA RIVER

089013506, Dubuque, IA

Built 2021 Load: 41.5 t ADT: 619

CHRISTOPH RD

Over: NO FORK MAQUOKETA RIVER

089021904, Dubuque, IA

Built 2019 Load: 41.5 t ADT: 207

CLEAR CREEK RD

Over: N FORK LITTLE MAQUKET

Clear Creek Rd, Dubuque, IA

Built 2016 Load: 41.5 t ADT: 88

COTTINGHAM RD

Over: S FORK CATFISH CREEK

089E13607, Dubuque, IA

Built 2017 Load: 41.8 t ADT: 412

US 151 NB

Over: N FORK MAQUOKETA RIVER

0.1 mi. N of Jct. IA 136, Dubuque, IA

Built 2002 Load: 42.9 t ADT: 4,550

STOFFEL RD

Over: STREAM

087001E2303, Dubuque, IA

Built 2018 Load: 43.1 t ADT: 118

KEMP RD

Over: CREEK

088E30706, Dubuque, IA

Built 2017 Load: 43.4 t ADT: 511

VASKE RD

Over: N FORK MAQUOKETA RIVER

089020703, Dubuque, IA

Built 2018 Load: 43.4 t ADT: 49

FISCHER RD

Over: PRAIRIE CREEK

087E12504, Dubuque, IA

Built 2018 Load: 43.7 t ADT: 29

N BANKSTON RD

Over: UNNAMED STREAM

089021203, Dubuque, IA

Built 2022 Load: 46.0 t ADT: 88

HERBER RD

Over: LITTLE MAQUOKETA RIVER

090E22604, Dubuque, IA

Built 2015 Load: 46.3 t ADT: 1,908

SB US 61 RAMP

Over: VACANT LOTS

0.5 Miles N. of Ia. # 3, Dubuque, IA

Built 1991 Load: 46.3 t ADT: 3,820

US 151 SB

Over: N FORK MAQUOKETA RIVER

0.1 mi. N of Jct. IA 136, Dubuque, IA

Built 2002 Load: 47.8 t ADT: 4,550

LOCAL

Over: LYTLE CREEK

087E21704, Dubuque, IA

Built 1997 Load: 48.2 t ADT: 60

SIMON RD

Over: WHITEWATER CREEK

087012502, Dubuque, IA

Built 2021 Load: 48.9 t ADT: 275

MITCHELL MILL RD

Over: SMALL STREAM

088E33204, Dubuque, IA

Built 2017 Load: 51.2 t ADT: 34

LOVERS LANE

Over: CREEK

090E20903, Dubuque, IA

Built 2019 Load: 51.2 t ADT: 45

US 52 SB RAMP LOOP

Over: GRANGER CREEK

1.5 MI. S OF DUBUQUE, Dubuque, IA

Built 2019 Load: 66.1 t ADT: 1,770

MONASTARY RD

Over: CATFISH CREEK

000000000, Dubuque, IA

Built 2010 Load: 89.7 t ADT: 1,160

LOCAL

Over: CREEK

090E20905, Dubuque, IA

Built 1925 Load: 8.4 t ADT: 44

FM

Over: CREEK

090021404, Dubuque, IA

Built 1959 Load: 15.9 t ADT: 170

LOCAL

Over: CREEK

087E22904, Dubuque, IA

Built 1940 Load: 17.2 t ADT: 20

LOCAL

Over: LITTLE MAQUOKETA RIVER

088010304, Dubuque, IA

Built 1952 Load: 17.2 t ADT: 128

LOCAL

Over: CREEK

087E12704, Dubuque, IA

Built 1936 Load: 17.5 t ADT: 110

FM

Over: SMALL STREAM

089E12004, Dubuque, IA

Built 1984 Load: 21.4 t ADT: 412

LOCAL

Over: CREEK

090011303, Dubuque, IA

Built 1940 Load: 21.7 t ADT: 120

LOCAL

Over: STREAM

087011804, Dubuque, IA

Built 1981 Load: 22.0 t ADT: 90

LOCAL

Over: CREEK

089023403, Dubuque, IA

Built 1998 Load: 23.0 t ADT: 206

FM

Over: STREAM

087E22104, Dubuque, IA

Built 1941 Load: 24.0 t ADT: 25

FM

Over: CREEK

090E12205, Dubuque, IA

Built 1920 Load: 24.0 t ADT: 310

LOCAL

Over: CREEK

089022404, Dubuque, IA

Built 1971 Load: 26.2 t ADT: 20

FISH POND RD

Over: CREEK

088010304, Dubuque, IA

Built 1997 Load: 30.5 t ADT: 128

FM

Over: CREEK

088023201, Dubuque, IA

Built 1962 Load: 30.8 t ADT: 490

FM

Over: CREEK

089010204, Dubuque, IA

Built 1950 Load: 30.8 t ADT: 39

DYERSVILLE EAST RD

Over: CREEK

089022704, Dubuque, IA

Built 1964 Load: 30.8 t ADT: 511

FM

Over: LYTLE CREEK

087E20903, Dubuque, IA

Built 1977 Load: 32.4 t ADT: 50

LOCAL

Over: CREEK

088022005, Dubuque, IA

Built 1997 Load: 39.8 t ADT: 130

FM

Over: SMALL

088E13203, Dubuque, IA

Built 1996 Load: 48.2 t ADT: 540

LOCAL

Structurally Deficient

Over: GRANGER CREEK

088E30611, Dubuque, IA

Built 1925 ADT: 45

LOCAL

Structurally Deficient

Over: JOHN'S CREEK

088023502, Dubuque, IA

Built 1938 ADT: 26

ENTRANCE

Structurally Deficient

Over: SIDE DITCH BRIDGE

087021601, Dubuque, IA

Built 1912 ADT: 10

CREEK BRANCH LANE

Structurally Deficient

Over: PRAIRIE CREEK

087E23105, Dubuque, IA

Built 1900 Load: 10.3 t ADT: 11

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