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:

LOCAL ROAD

Over: DOWD CREEK

086181601, Grundy, IA

Built 1977 ADT: 15

LOCAL

Over: BRANCH BLACKHAWK CREEK

087170303, Grundy, IA

Built 1955 ADT: 33

FM

Over: BLACKHAWK CREEK ,BRANCH

087171302, Grundy, IA

Built 1965 ADT: 275

LOCAL ROAD

Over: BRANCH OF WOLF CREEK

087173502, Grundy, IA

Built 1953 ADT: 15

LOCAL

Over: BRANCH OF BLACKHAWK CRK

088173102, Grundy, IA

Built 1976 ADT: 71

FM

Over: BRANCH BEAVER CREEK

089150302, Grundy, IA

Built 1968 ADT: 619

LOCAL ROAD

Over: BEAVER CREEK

089172801, Grundy, IA

Built 1948 ADT: 11

LOCAL ROAD

Over: MIDDLE FORK BEAVER CREEK

089181801, Grundy, IA

Built 1952 ADT: 99

LOCAL RD

Over: BLACK HAWK CREEK

088161602, Grundy, IA

Built 1971 Load: 3.8 t ADT: 11

LOCAL

Over: BRANCH OF BEAVER CREEK

089170602, Grundy, IA

Built 1953 Load: 4.1 t ADT: 40

LOCAL ROAD

Over: BEAVER CREEK

089170205, Grundy, IA

Built 1978 Load: 4.1 t ADT: 20

LOCAL

Over: DOWD CREEK

086182002, Grundy, IA

Built 1955 Load: 4.2 t ADT: 59

LOCAL ROAD

Over: BRANCH BLACK HAWK CREEK

087160203, Grundy, IA

Built 1971 Load: 4.3 t ADT: 26

LOCAL ROAD

Over: BRANCH BEAVER CREEK

089150801, Grundy, IA

Built 1975 Load: 5.2 t ADT: 100

LOCAL ROAD

Over: BRANCH BLACK HAWK CREEK

087160403, Grundy, IA

Built 1971 Load: 7.3 t ADT: 33

LOCAL ROAD

Over: CREEK

086180601, Grundy, IA

Built 1974 Load: 7.6 t ADT: 29

LOCAL ROAD

Over: SOUTH FORK BEAVER CREEK

088180101, Grundy, IA

Built 1948 Load: 8.2 t ADT: 44

LOCAL ROAD

Over: BRANCH BLACK HAWK CREEK

088151802, Grundy, IA

Built 1971 Load: 10.0 t ADT: 29

LOCAL ROAD

Over: BRANCH BLACK HAWK CREEK

088152302, Grundy, IA

Built 1977 Load: 11.6 t ADT: 30

LOCAL ROAD

Over: CREEK

089150501, Grundy, IA

Built 1981 Load: 13.4 t ADT: 33

LOCAL

Over: SMALL

088152102, Grundy, IA

Built 1978 Load: 14.3 t ADT: 11

LOCAL

Over: BLACK HAWK CREEK

088171101, Grundy, IA

Built 1977 Load: 15.0 t ADT: 70

LOCAL

Over: BRANCH WOLF CREEK

086171101, Grundy, IA

Built 1915 Load: 15.2 t ADT: 44

LOCAL

Over: BRANCH BEAVER CREEK

089170902, Grundy, IA

Built 1971 Load: 15.2 t ADT: 29

LOCAL

Over: BRANCH WOLF CREEK

086171201, Grundy, IA

Built 1956 Load: 15.4 t ADT: 30

FM

Over: BEAVER CREEK ,BRANCH

089182001, Grundy, IA

Built 1954 Load: 15.7 t ADT: 79

FM

Over: DOWD CREEK, BRANCH

086182101, Grundy, IA

Built 1966 Load: 16.4 t ADT: 187

FM

Over: BLACKHAWK CREEK ,BRANCH

088162001, Grundy, IA

Built 1956 Load: 16.6 t ADT: 177

LOCAL ROAD

Over: WOLF CREEK

086180202, Grundy, IA

Built 1970 Load: 16.7 t ADT: 11

LOCAL

Over: BR BEAVER CREEK

089172802, Grundy, IA

Built 1979 Load: 16.7 t ADT: 15

LOCAL

Over: BRANCH WOLF CREEK

086181303, Grundy, IA

Built 1914 Load: 17.0 t ADT: 5

LOCAL

Over: BLACK HAWK CREEK

087152102, Grundy, IA

Built 1946 Load: 18.6 t ADT: 59

LOCAL RD

Over: BRANCH BLACK HAWK CREEK

088160204, Grundy, IA

Built 1963 Load: 19.0 t ADT: 26

LOCAL ROAD

Over: CREEK

087151304, Grundy, IA

Built 1977 Load: 21.7 t ADT: 15

LOCAL ROAD

Over: MUNNS CREEK

087162102, Grundy, IA

Built 1971 Load: 21.8 t ADT: 29

FM

Over: BLACKHAWK CREEK

087161304, Grundy, IA

Built 1967 Load: 22.6 t ADT: 579

R AVE

Over: BRANCH OF BLACKHAWK CRK

088162302, Grundy, IA

Built 1976 Load: 23.0 t ADT: 50

LOCAL ROAD

Over: N FORK OF BEAVER CREEK

089171902, Grundy, IA

Built 1947 Load: 23.0 t ADT: 15

LOCAL ROAD

Over: BRANCH BLACK HAWK CREEK

087153502, Grundy, IA

Built 1973 Load: 23.3 t ADT: 44

LOCAL ROAD

Over: MIDDLE FORK BEAVER CREEK

089172902, Grundy, IA

Built 1948 Load: 24.1 t ADT: 39

LOCAL ROAD

Over: BRANCH OF WOLF CREEK

086171803, Grundy, IA

Built 1977 Load: 24.6 t ADT: 44

LOCAL ROAD

Over: BRANCH OF WOLF CREEK

086171803, Grundy, IA

Built 1977 Load: 25.2 t ADT: 44

LOCAL ROAD

Over: MIDDLE FORK OF BEAVER CR

089182802, Grundy, IA

Built 1976 Load: 25.4 t ADT: 20

LOCAL ROAD

Over: BLACK HAWK CREEK

087151403, Grundy, IA

Built 1979 Load: 25.5 t ADT: 20

LOCAL

Over: BR BEAVER CREEK

089171401, Grundy, IA

Built 1978 Load: 25.5 t ADT: 44

LOCAL

Over: WOLF CREEK

086180201, Grundy, IA

Built 1978 Load: 25.7 t ADT: 49

LOCAL RD

Over: SOUTH FORK BEAVER CREEK

088180903, Grundy, IA

Built 1977 Load: 25.8 t ADT: 39

FM

Over: WOLF CREEK

086182301, Grundy, IA

Built 1966 Load: 26.3 t ADT: 187

FM

Over: BRANCH BEAVER CREEK

089171502, Grundy, IA

Built 1966 Load: 26.8 t ADT: 393

LOCAL ROAD

Over: NORTH FORK BEAVER

089172902, Grundy, IA

Built 1981 Load: 27.4 t ADT: 39

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.