Grundy County, IA

270 public highway bridges

Grundy County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Grundy County, Iowa contains 270 public highway bridges. Roughly 37.4% are rated “Good,” 30% “Fair,” and 25.9% “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.

270

Total Bridges

37.4%

Good

30%

Fair

25.9%

Poor Condition

Condition Distribution

Good

37.4% (101)

Fair

30% (81)

Poor

25.9% (70)

All Bridges (270)

Sort:

US 20 EB OFF RAMP

Over: SOUTH BEAVER CREEK

0.1 MILE W OF JCT SR T19, Grundy, IA

Built 2003 Load: 23.9 t ADT: 350

250TH ST

Over: MUNNS CREEK

087162201, Grundy, IA

Built 2006 Load: 28.7 t ADT: 11

LOCAL

Over: SOUTH FORK BEAVER CREEK

089173302, Grundy, IA

Built 1985 Load: 29.4 t ADT: 33

LOCAL ROAD

Over: WOLF CREEK

086173302, Grundy, IA

Built 1978 Load: 29.9 t ADT: 70

LOCAL

Over: SOUTH FORK OF BEAVER CK

088180902, Grundy, IA

Built 1984 Load: 29.9 t ADT: 78

LOCAL

Over: HAMMERS CREEK

089150101, Grundy, IA

Built 2009 Load: 30.1 t ADT: 70

FM

Over: MOSQUITO CREEK

087153101, Grundy, IA

Built 1981 Load: 30.8 t ADT: 44

FM

Over: MOSQUITO CREEK

087163602, Grundy, IA

Built 1983 Load: 30.8 t ADT: 39

LOCAL

Over: PHELPS CREEK

089160603, Grundy, IA

Built 1987 Load: 31.5 t ADT: 59

H AVE

Over: BRANCH WOLF CREEK

086173004, Grundy, IA

Built 2018 Load: 32.4 t ADT: 29

T37 M AVE

Over: WOLF CREEK

086173602, Grundy, IA

Built 2019 Load: 32.4 t ADT: 79

300TH ST

Over: WOLF CREEK

086181501, Grundy, IA

Built 2020 Load: 32.4 t ADT: 26

X AVE

Over: BRANCH BLACKHAWK CREEK

087150202, Grundy, IA

Built 2018 Load: 32.4 t ADT: 26

230TH ST

Over: BLACK HAWK CREEK

087151201, Grundy, IA

Built 2012 Load: 32.4 t ADT: 33

R AVE

Over: MUNNS CREEK

087161402, Grundy, IA

Built 2016 Load: 32.4 t ADT: 59

180TH ST

Over: BLACK HAWK CREEK

088151801, Grundy, IA

Built 2015 Load: 32.4 t ADT: 44

SR D35

Over: BLACK HAWK CREEK

088153503, Grundy, IA

Built 2011 Load: 32.4 t ADT: 903

G AVE

Over: S FORK OF BEAVER CREEK

089173102, Grundy, IA

Built 2017 Load: 32.4 t ADT: 39

FM

Over: BRANCH OF LITTLE WOLF CR

086171202, Grundy, IA

Built 1987 Load: 32.7 t ADT: 29

KING AVE

Over: BRANCH WOLF CREEK

086173408, Grundy, IA

Built 2000 Load: 32.7 t ADT: 11

LOCAL

Over: DOWD CREEK

086180401, Grundy, IA

Built 1990 Load: 32.7 t ADT: 39

LOCAL

Over: BLACK HAWK CREEK

087153501, Grundy, IA

Built 1986 Load: 32.7 t ADT: 59

LOCAL

Over: BLACKHAWK CREEK ,BRANCH

087180302, Grundy, IA

Built 1977 Load: 32.7 t ADT: 70

LOCAL

Over: BRANCH OF BLACKHAWK CRK

088151001, Grundy, IA

Built 1987 Load: 32.7 t ADT: 11

175TH ST

Over: BRANCH BLACK HAWK CREEK

088151203, Grundy, IA

Built 2015 Load: 32.7 t ADT: 70

FM

Over: BLACKHAWK CREEK ,BRANCH

088152202, Grundy, IA

Built 1989 Load: 32.7 t ADT: 20

LOCAL

Over: BLACKHAWK CREEK

088161001, Grundy, IA

Built 1995 Load: 32.7 t ADT: 44

FM

Over: BR.BLACKHAWK CREEK

088162201, Grundy, IA

Built 1986 Load: 32.7 t ADT: 255

LOCAL

Over: FORK OF BLACKHAWK CREEK

088171202, Grundy, IA

Built 1984 Load: 32.7 t ADT: 26

LOCAL RD

Over: BR BLACK HAWK CREEK

088173302, Grundy, IA

Built 2002 Load: 32.7 t ADT: 49

LOCAL

Over: BRANCH BEAVER CREEK

088180903, Grundy, IA

Built 1992 Load: 32.7 t ADT: 39

LOCAL ROAD

Over: BRANCH BEAVER CREEK

089160101, Grundy, IA

Built 1991 Load: 32.7 t ADT: 70

LOCAL

Over: BRANCH OF BEAVER CREEK

089160701, Grundy, IA

Built 1991 Load: 32.7 t ADT: 26

LOCAL

Over: FORK OF BEAVER CREEK

089160901, Grundy, IA

Built 1985 Load: 32.7 t ADT: 39

LOCAL

Over: BRANCH BLACKHAWK CREEK

089162202, Grundy, IA

Built 1991 Load: 32.7 t ADT: 15

FM

Over: BLACKHAWK CREEK BRANCH

089162602, Grundy, IA

Built 1996 Load: 32.7 t ADT: 226

LOCAL

Over: BRANCH OF BLACKHAWK CK

089162701, Grundy, IA

Built 1987 Load: 32.7 t ADT: 26

LOCAL

Over: CREEK

089170601, Grundy, IA

Built 2003 Load: 32.7 t ADT: 33

LOCAL

Over: BR BEAVER CREEK

089181801, Grundy, IA

Built 1996 Load: 32.7 t ADT: 97

A AVE

Over: BRANCH BEAVER CREEK

089181802, Grundy, IA

Built 2012 Load: 32.7 t ADT: 15

FM

Over: FORK WOLF CREEK

086173405, Grundy, IA

Built 1983 Load: 32.7 t ADT: 246

E AVE

Over: SOUTH FORK BEAVER CREEK

088181502, Grundy, IA

Built 2012 Load: 32.7 t ADT: 49

260TH ST

Over: DOWD CREEK

87182801, Grundy, IA

Built 2013 Load: 32.7 t ADT: 20

C AVE

Over: STREAM

088182902, Grundy, IA

Built 2014 Load: 32.7 t ADT: 5

T13 D AVE

Over: WATERWAY

089181002, Grundy, IA

Built 2015 Load: 32.7 t ADT: 805

250TH ST

Over: BLACK HAWK CREEK

087152401, Grundy, IA

Built 2016 Load: 32.7 t ADT: 29

K AVE

Over: BLACK HAWK CREEK

088171002, Grundy, IA

Built 2016 Load: 32.7 t ADT: 39

H AVE

Over: WOLF CREEK

087171902, Grundy, IA

Built 2018 Load: 32.7 t ADT: 44

230TH ST

Over: TRIB OF BLACK HAWK CK

087150801, Grundy, IA

Built 2018 Load: 32.7 t ADT: 11

120TH ST

Over: MIDDLE FORK BEAVER CREEK

089181701, Grundy, IA

Built 2019 Load: 32.7 t ADT: 20

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

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

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