Plymouth County, IA

407 public highway bridges

Plymouth County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Plymouth County, Iowa contains 407 public highway bridges. Roughly 51.8% are rated “Good,” 24.6% “Fair,” and 22.1% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

407

Total Bridges

51.8%

Good

24.6%

Fair

22.1%

Poor Condition

Condition Distribution

Good

51.8% (211)

Fair

24.6% (100)

Poor

22.1% (90)

All Bridges (407)

Sort:

220TH ST

Over: DRAINAGE

091450501, Plymouth, IA

Built 1958 Load: 14.7 t ADT: 26

200TH ST

Over: PLYMOUTH CREEK

092443001, Plymouth, IA

Built 1952 Load: 14.7 t ADT: 15

200TH ST

Over: DRAINAGE

092492603, Plymouth, IA

Built 1959 Load: 14.7 t ADT: 30

270TH ST

Over: DEER CREEK

091433201, Plymouth, IA

Built 1900 Load: 15.0 t ADT: 15

260TH ST

Over: JOHN'S CREEK

091442501, Plymouth, IA

Built 1900 Load: 15.0 t ADT: 11

QUARTZ AVE

Over: CREEK

090441202, Plymouth, IA

Built 1900 Load: 15.1 t ADT: 5

240TH ST

Over: MUD CREEK

091441801, Plymouth, IA

Built 1900 Load: 15.1 t ADT: 5

140TH ST

Over: INDIAN CREEK

093473001, Plymouth, IA

Built 1956 Load: 15.5 t ADT: 20

GRANITE AVE

Over: PERRY CREEK

091472202, Plymouth, IA

Built 1952 Load: 15.6 t ADT: 5

260TH ST

Over: DRY BRANCH

091442801, Plymouth, IA

Built 1956 Load: 15.8 t ADT: 34

160TH ST

Over: DEEP CREEK

092440201, Plymouth, IA

Built 1900 Load: 16.2 t ADT: 71

GRANITE AVE

Over: BROKEN KETTLE CREEK

093472202, Plymouth, IA

Built 1959 Load: 16.3 t ADT: 20

240TH ST

Over: BIG WHISKEY SLOUGH

091431401, Plymouth, IA

Built 1953 Load: 16.7 t ADT: 11

LOCAL

Over: DRAINAGE

090461903, Plymouth, IA

Built 1955 Load: 16.8 t ADT: 30

IMPALA AVE

Over: MINK CREEK

092460502, Plymouth, IA

Built 1938 Load: 16.8 t ADT: 26

FIR AVE

Over: BULL RUN

092473302, Plymouth, IA

Built 1948 Load: 16.8 t ADT: 30

180TH ST

Over: WESTFIELD CREEK

092481501, Plymouth, IA

Built 1948 Load: 16.8 t ADT: 20

SHAMROCK AVE

Over: DEEP CREEK

093431502, Plymouth, IA

Built 1953 Load: 17.1 t ADT: 50

230TH ST

Over: RATHBURN CREEK

091430801, Plymouth, IA

Built 1900 Load: 17.2 t ADT: 30

270TH ST

Over: CARTER CREEK

091463503, Plymouth, IA

Built 1900 Load: 17.2 t ADT: 11

OTTER AVE

Over: WILLOW CREEK

093442902, Plymouth, IA

Built 1949 Load: 17.2 t ADT: 15

190TH ST

Over: MINK CREEK

092462201, Plymouth, IA

Built 1947 Load: 17.3 t ADT: 15

QUEST AVE

Over: RATHBURN CREEK

091431902, Plymouth, IA

Built 1950 Load: 17.8 t ADT: 26

MARBLE AVE.

Over: PLYMOUTH CREEK

092453502, Plymouth, IA

Built 1946 Load: 18.0 t ADT: 5

FAWN AVE

Over: BROKEN KETTLE CREEK

091470804, Plymouth, IA

Built 1953 Load: 18.1 t ADT: 11

150TH ST

Over: FLOYD RIVER

093453403, Plymouth, IA

Built 1954 Load: 18.4 t ADT: 131

IRIS AVE

Over: MINK CREEK

093462102, Plymouth, IA

Built 1900 Load: 18.6 t ADT: 34

FM C-43

Over: BROKEN KETTLE CREEK

091482205, Plymouth, IA

Built 1960 Load: 19.0 t ADT: 159

130TH ST

Over: DRAINAGE

093451901, Plymouth, IA

Built 1961 Load: 19.4 t ADT: 20

LYNX AVE

Over: MUDDY CREEK

090453302, Plymouth, IA

Built 1949 Load: 20.0 t ADT: 34

EVERGREEN AVE

Over: INDIAN CREEK

093471902, Plymouth, IA

Built 1900 Load: 20.2 t ADT: 20

LOCAL

Over: WILLOW CREEK

093430701, Plymouth, IA

Built 1941 Load: 20.6 t ADT: 60

200TH ST

Over: MINK CREEK

092462701, Plymouth, IA

Built 1949 Load: 20.9 t ADT: 34

JUNIPER AVE

Over: MINK CREEK

093460202, Plymouth, IA

Built 1948 Load: 20.9 t ADT: 34

320TH ST

Over: MUD CREEK

090443001, Plymouth, IA

Built 1900 Load: 21.2 t ADT: 11

120TH ST

Over: INDIAN CREEK

093481401, Plymouth, IA

Built 1900 Load: 21.2 t ADT: 20

JUNIPER AVE

Over: MINK CREEK

093461102, Plymouth, IA

Built 1900 Load: 21.4 t ADT: 45

190TH ST

Over: DRAINAGE

092462301, Plymouth, IA

Built 1949 Load: 21.5 t ADT: 20

200TH ST

Over: CLEAR CREEK

092433003, Plymouth, IA

Built 1946 Load: 21.7 t ADT: 5

SUNSET AVE

Over: DD

091431402, Plymouth, IA

Built 1956 Load: 22.0 t ADT: 20

240TH ST

Over: PERRY CREEK

091471401, Plymouth, IA

Built 1900 Load: 22.1 t ADT: 5

330TH ST

Over: CREEK

090433103, Plymouth, IA

Built 1956 Load: 23.2 t ADT: 60

140TH ST

Over: BROKEN KETTLE CREEK

093472801, Plymouth, IA

Built 1948 Load: 23.3 t ADT: 20

DIAMOND AVE

Over: WESTFIELD CREEK

092480302, Plymouth, IA

Built 1900 Load: 23.6 t ADT: 11

RITCHIE RD

Over: MUD CREEK

091443103, Plymouth, IA

Built 1948 Load: 23.9 t ADT: 15

ROOSEVELT AVE

Over: DD

091432802, Plymouth, IA

Built 1900 Load: 24.0 t ADT: 15

DIAMOND AVE

Over: BEAVER CREEK

093482702, Plymouth, IA

Built 1900 Load: 24.0 t ADT: 26

280TH ST

Over: PERRY CREEK

090470401, Plymouth, IA

Built 1900 Load: 24.1 t ADT: 20

300TH ST

Over: MUD CREEK

090451301, Plymouth, IA

Built 1950 Load: 24.3 t ADT: 50

190TH ST

Over: BULL RUN

092472101, Plymouth, IA

Built 1961 Load: 24.3 t ADT: 50

Read our methodology - how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →

Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

P

Compiled by PlainBridges, Independent data publisher

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.