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:

LOCAL

Over: CREEK

089022003, Dubuque, IA

Built 1955 Load: 17.0 t ADT: 216

FM

Over: SMALL

090E12804, Dubuque, IA

Built 1942 Load: 17.0 t ADT: 250

LOCAL

Over: SMALL

087E11003, Dubuque, IA

Built 1977 Load: 17.5 t ADT: 30

LOCAL

Over: PRAIRIE CREEK

087E23004, Dubuque, IA

Built 1946 Load: 18.0 t ADT: 45

US 20 US 52

Over: DRAINAGE DITCH

0.8 MI. E OF JCT. SR Y21, Dubuque, IA

Built 1957 Load: 18.1 t ADT: 18,500

LOCAL

Over: PRAIRIE CREEK

087E12306, Dubuque, IA

Built 1930 Load: 18.3 t ADT: 118

LOCAL

Over: CREEK

090E13505, Dubuque, IA

Built 1973 Load: 18.5 t ADT: 80

ROOSTER LN

Over: SIDE DITCH BRIDGE

0.1 mi. N of IA 32, Dubuque, IA

Built 1965 Load: 19.0 t ADT: 10

LOCAL

Over: BUNCOMBE CREEK

087E21401, Dubuque, IA

Built 1996 Load: 19.1 t ADT: 30

LATTNERVILLE LANE

Over: CREEK

089E13104, Dubuque, IA

Built 1955 Load: 20.7 t ADT: 30

ENTRANCE

Over: SIDE DITCH

089010403, Dubuque, IA

Built 2017 Load: 21.1 t ADT: 10

LOCAL

Over: STREAM

087E10607, Dubuque, IA

Built 1981 Load: 21.4 t ADT: 15

LOCAL

Over: LYTLE CREEK

087E21802, Dubuque, IA

Built 1981 Load: 21.4 t ADT: 45

LOCAL

Over: SMALL STREAM

087012408, Dubuque, IA

Built 1900 Load: 21.7 t ADT: 40

LOCAL

Over: LITTLE MAQUOKETA RIVER

090E13604, Dubuque, IA

Built 1978 Load: 21.7 t ADT: 80

LOCAL

Over: WHITEWATER CREEK

088E11802, Dubuque, IA

Built 1979 Load: 22.0 t ADT: 25

FM

Over: GRANGER CREEK

000000000, Dubuque, IA

Built 2009 Load: 22.0 t ADT: 25

LOCAL

Over: SMALL

090012303, Dubuque, IA

Built 1983 Load: 22.0 t ADT: 79

LOCAL

Over: SMALL

087022503, Dubuque, IA

Built 1979 Load: 22.7 t ADT: 50

FM

Over: SMALL

088E10105, Dubuque, IA

Built 1980 Load: 22.7 t ADT: 71

FM

Over: HEWITT CREEK

089021303, Dubuque, IA

Built 1983 Load: 22.7 t ADT: 226

FM

Over: HEWITT CREEK

089021303, Dubuque, IA

Built 1983 Load: 22.7 t ADT: 226

FM

Over: SMALL

089021403, Dubuque, IA

Built 1983 Load: 22.7 t ADT: 216

LOCAL

Over: CREEK

090E11507, Dubuque, IA

Built 1957 Load: 22.7 t ADT: 160

FM

Over: CREEK

090E13104, Dubuque, IA

Built 1960 Load: 22.7 t ADT: 190

FM

Over: LITTLE MAQUOKETA RIVER

090E23103, Dubuque, IA

Built 1983 Load: 22.7 t ADT: 890

LOCAL

Over: CREEK

090021107, Dubuque, IA

Built 1993 Load: 22.7 t ADT: 140

RUPP HALLLOW RD

Over: ROADSIDE DITCH

00000, Dubuque, IA

Built 1980 Load: 22.7 t ADT: 49

LOCAL

Over: JOHNS CREEK

088023504, Dubuque, IA

Built 1979 Load: 23.3 t ADT: 20

LOCAL

Over: LITTLE MAQUOKETA RIVER

089E20604, Dubuque, IA

Built 1984 Load: 23.3 t ADT: 274

KANE RD

Over: CREEK

088E31903, Dubuque, IA

Built 2000 Load: 23.7 t ADT: 240

LOCAL

Over: CREEK

089020601, Dubuque, IA

Built 2002 Load: 23.7 t ADT: 79

LOCAL

Over: WHITE WATER CREEK

087010103, Dubuque, IA

Built 1982 Load: 24.0 t ADT: 71

FM

Over: CREEK

089E13006, Dubuque, IA

Built 1975 Load: 24.3 t ADT: 462

FM

Over: CREEK

089013607, Dubuque, IA

Built 1973 Load: 25.9 t ADT: 59

LOCAL

Over: SMALL

090E12405, Dubuque, IA

Built 1979 Load: 26.2 t ADT: 60

FM

Over: WHITE WATER CREEK

088013506, Dubuque, IA

Built 1966 Load: 26.6 t ADT: 511

CONRAD LANE

Over: WHITEWATER CREEK

088012603, Dubuque, IA

Built 2022 Load: 26.9 t ADT: 11

EAST 16TH ST

Over: LAKE PEOSTA CHANNEL

000000000, Dubuque, IA

Built 1982 Load: 27.2 t ADT: 9,191

LOCAL

Over: CREEK

090E13606, Dubuque, IA

Built 1900 Load: 27.5 t ADT: 5

CALONDER RD

Over: MIDDLE MAQUOKETA RIVER

090E13106, Dubuque, IA

Built 1974 Load: 28.6 t ADT: 160

FM

Over: KIDDER CREEK

088010204, Dubuque, IA

Built 1985 Load: 29.8 t ADT: 619

FM

Over: MAQUOKETA RIVER

089020507, Dubuque, IA

Built 1984 Load: 29.8 t ADT: 412

BELTLINE NW

Over: MAQUOKETA RIVER

BELTLINE NW - N FORK, Dubuque, IA

Built 1987 Load: 29.8 t ADT: 1,738

LOCAL

Over: MIDDLE FORK MAQUOKETA

089010303, Dubuque, IA

Built 1972 Load: 30.0 t ADT: 290

NB NW ARTERIAL

Over: OVER CC RR & CATFISH CK

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

Built 1982 Load: 30.1 t ADT: 5,295

LOCAL

Over: GRANGER CREEK

088E21227, Dubuque, IA

Built 1975 Load: 30.4 t ADT: 480

LOCAL

Over: N.FORK MAQUOKETA RIVER

089021901, Dubuque, IA

Built 1967 Load: 30.4 t ADT: 790

CEDAR CROSS RD

Over: MIDDLE FORK CATFISH CRK

S. OF CENTER GROVE DR., Dubuque, IA

Built 1985 Load: 31.4 t ADT: 10,390

LOCAL

Over: SMALL STREAM

087023004, Dubuque, IA

Built 1986 Load: 31.5 t ADT: 50

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