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:

FM

Over: WOLF CREEK

086173404, Grundy, IA

Built 1982 Load: 29.9 t ADT: 1,493

LOCAL

Over: BR BLACKHAWK CREEK

087170702, Grundy, IA

Built 1979 Load: 29.9 t ADT: 49

LOCAL

Over: BR BLACKHAWK CREEK

087170903, Grundy, IA

Built 1978 Load: 29.9 t ADT: 88

LOCAL ROAD

Over: BLACKHAWK CREEK

087181001, Grundy, IA

Built 1977 Load: 29.9 t ADT: 70

FM

Over: BLACK HAWK CREEK

088150802, Grundy, IA

Built 1974 Load: 29.9 t ADT: 1,404

FM

Over: BEAVER CREEK

088181503, Grundy, IA

Built 1974 Load: 29.9 t ADT: 265

FM

Over: BEAVER CREEK ,BRANCH

089182001, Grundy, IA

Built 1971 Load: 29.9 t ADT: 79

LOCAL

Over: BR BLACKHAWK CREEK

087170202, Grundy, IA

Built 1979 Load: 30.2 t ADT: 59

FM

Over: FORK OF MINNEHAHA CREEK

087160704, Grundy, IA

Built 1986 Load: 30.8 t ADT: 324

LOCAL ROAD

Over: BRANCH BLACKHAWK CRK

088173202, Grundy, IA

Built 1976 Load: 30.8 t ADT: 49

FM

Over: BLACK HAWK

088173503, Grundy, IA

Built 1981 Load: 30.8 t ADT: 79

LOCAL ROAD

Over: MUNNS CREEK

087162601, Grundy, IA

Built 1956 Load: 31.0 t ADT: 26

IA 175

Over: BRANCH BLACKHAWK CREEK

0.8 MILE W OF JCT SR T69, Grundy, IA

Built 1977 Load: 31.2 t ADT: 2,080

FM

Over: HAMMERS CREEK

089151202, Grundy, IA

Built 1981 Load: 31.2 t ADT: 34

LOCAL ROAD

Over: BRANCH BEAR CREEK

087183001, Grundy, IA

Built 1955 Load: 31.9 t ADT: 49

D19 160TH ST

Over: BR N BLACKHAWK CREEK

088150303, Grundy, IA

Built 1985 Load: 32.7 t ADT: 786

F AVE

Over: SMALL NATURAL STREAM

087181102, Grundy, IA

Built 1969 Load: 32.7 t ADT: 1,169

FM

Over: BR WOLF CREEK

086170102, Grundy, IA

Built 1977 Load: 32.7 t ADT: 69

LOCAL ROAD

Over: DOWD CREEK

086180901, Grundy, IA

Built 1978 Load: 32.7 t ADT: 49

LOCAL

Over: WOLF CREEK

086181001, Grundy, IA

Built 1975 Load: 32.7 t ADT: 49

LOCAL

Over: FORK OF DOWD CREEK

086181603, Grundy, IA

Built 1985 Load: 32.7 t ADT: 49

LOCAL

Over: BRANCH BLACK HAWK CREEK

087161802, Grundy, IA

Built 1994 Load: 32.7 t ADT: 69

FM

Over: MUNNS CREEK

087162202, Grundy, IA

Built 1994 Load: 32.7 t ADT: 628

FM

Over: BR BLACKHAWK CK

088152002, Grundy, IA

Built 1977 Load: 32.7 t ADT: 1,051

LOCAL

Over: BLACK HAWK CREEK

088160102, Grundy, IA

Built 1991 Load: 32.7 t ADT: 33

LOCAL

Over: BRANCH BLACKHAWK CREEK

088171102, Grundy, IA

Built 1988 Load: 32.7 t ADT: 33

205TH ST

Over: BLACKHAWK CREEK

088172703, Grundy, IA

Built 1993 Load: 32.7 t ADT: 452

FM

Over: BRANCH BLACKHAWK CREEK

088172704, Grundy, IA

Built 1988 Load: 32.7 t ADT: 34

LOCAL

Over: BRANCH BEAVER CREEK

088180904, Grundy, IA

Built 1988 Load: 32.7 t ADT: 70

LOCAL

Over: FORK OF BEAVER CREEK

088181502, Grundy, IA

Built 1984 Load: 32.7 t ADT: 44

FM

Over: BRANCH OF IOWA RIVER

088183102, Grundy, IA

Built 1987 Load: 32.7 t ADT: 79

LOCAL

Over: BRANCH BLACKHAWK CREEK

089153201, Grundy, IA

Built 1988 Load: 32.7 t ADT: 49

FM

Over: BEAVER CREEK ,BRANCH

089172702, Grundy, IA

Built 1970 Load: 32.7 t ADT: 69

FM

Over: BEAVER CREEK ,NORTH FORK

089181302, Grundy, IA

Built 1989 Load: 32.7 t ADT: 452

FM

Over: BEAVER CREEK ,NORTH FORK

089182401, Grundy, IA

Built 1990 Load: 32.7 t ADT: 373

LOCAL

Over: STREAM

089151401, Grundy, IA

Built 1977 Load: 33.0 t ADT: 97

LOCAL ROAD

Over: BRANCH BLACKHAWK CREEK

087150402, Grundy, IA

Built 1966 Load: 33.9 t ADT: 59

LOCAL

Over: BLACKHAWK CREEK

088161001, Grundy, IA

Built 1957 Load: 34.2 t ADT: 44

FM

Over: BRANCH BEAVER CREEK

089172301, Grundy, IA

Built 1970 Load: 36.1 t ADT: 501

LOCAL ROAD

Over: WOLF X CREEK

087182501, Grundy, IA

Built 1957 Load: 36.2 t ADT: 11

FM

Over: BEAVER CREEK

089172202, Grundy, IA

Built 1972 Load: 36.3 t ADT: 79

FM

Over: DRAINAGE DITCH

088182903, Grundy, IA

Built 1955 Load: 36.7 t ADT: 491

FM

Over: CREEK

089152301, Grundy, IA

Built 1966 Load: 36.9 t ADT: 707

FM

Over: WOLF CREEK, BRANCH

086182401, Grundy, IA

Built 1989 Load: 37.2 t ADT: 59

LOCAL

Over: FK OF BLACKHAWK CREEK

087172401, Grundy, IA

Built 1997 Load: 38.8 t ADT: 44

FM

Over: BLACKHAWK CREEK ,BRANCH

088163303, Grundy, IA

Built 1964 Load: 40.7 t ADT: 550

FM

Over: WOLF CREEK

087183501, Grundy, IA

Built 1964 Load: 43.2 t ADT: 98

LOCAL RD

Over: BRANCH BLACKHAWK CREEK

089162401, Grundy, IA

Built 1957 Load: 43.3 t ADT: 29

FM

Over: BLACKHAWK CREEK ,BRANCH

087160102, Grundy, IA

Built 1966 Load: 47.8 t ADT: 579

US 20 WB ON RAMP

Over: BEAVER CREEK

0.1 MILE W OF JCT SR T19, Grundy, IA

Built 2003 Load: 23.3 t ADT: 340

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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