Polk County, IA

415 public highway bridges

Polk County Bridge Snapshot

Polk County, Iowa contains 415 public highway bridges in the FHWA National Bridge Inventory. Roughly 35.4% are rated “Good,” 25.3% “Fair,” 6% “Poor,” and 6% 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.

415

Total Bridges

35.4%

Good

6%

Poor

6%

Structurally Deficient

Condition Distribution

Good

35.4% (147)

Fair

25.3% (105)

Poor

6% (25)

SD

6% (25)

All Bridges (415)

Sort:

NW 5TH ST

Over: ROCK CREEK

080241606, Polk, IA

Built 1981 Load: 32.7 t ADT: 1,820

LOCAL

Over: CREEK

081250502, Polk, IA

Built 1987 Load: 32.7 t ADT: 60

LOCAL

Over: TRIB BIG CREEK

081250301, Polk, IA

Built 1992 Load: 32.7 t ADT: 60

E.P.TRUE PARKWY

Over: JORDON CREEK

000000000, Polk, IA

Built 1986 Load: 32.7 t ADT: 12,612

GUTHRIE AVE

Over: OVER UP RR

079243600, Polk, IA

Built 1978 Load: 32.7 t ADT: 5,368

INDIANOLA RD

Over: YEADER CREEK

078242302, Polk, IA

Built 1986 Load: 32.7 t ADT: 8,570

EP TRUE PARKWAY

Over: JORDON CREEK

000000000, Polk, IA

Built 1990 Load: 32.7 t ADT: 12,809

NE LAKEVIEW DR

Over: WATERWAY

080241300, Polk, IA

Built 1994 Load: 32.7 t ADT: 523

DELAWARE AVE

Over: 7TH WARD DITCH

079242800, Polk, IA

Built 1996 Load: 32.7 t ADT: 5,534

PROSPECT RD

Over: CLOSES CREEK

Prospect Rd. at Closes Cr, Polk, IA

Built 1984 Load: 32.7 t ADT: 2,245

ARMY POST RD

Over: ORNERY CREEK

Army Post over Ornery Crk, Polk, IA

Built 1956 Load: 32.7 t ADT: 349

I-235

Over: DRAINAGE DITCH

0.4 MILE EAST OF IOWA 28, Polk, IA

Built 1966 Load: 32.7 t ADT: 118,600

SB US 65

Over: SOUTH SKUNK RIVER

7.6 MILES N OF JCT I-80, Polk, IA

Built 2000 Load: 32.8 t ADT: 4,800

INDUSTRAIL CIR

Over: CREEK

000000000, Polk, IA

Built 1998 Load: 33.0 t ADT: 1,138

EASTER LK PK

Over: STREAM

000000000, Polk, IA

Built 1968 Load: 33.5 t

N.E.DELAWARE AV

Over: FOUR MILE CREEK

080230700, Polk, IA

Built 1982 Load: 33.7 t ADT: 5,650

SB I-35

Over: OVER UPP RR

1.1 MILES N OF N JCT I-80, Polk, IA

Built 2002 Load: 35.1 t ADT: 45,700

LOCAL

Over: D.D. #51

079241461, Polk, IA

Built 1991 Load: 36.6 t ADT: 180

IA 415

Over: SAYLORVILLE RESERVOIR

West of Polk City, Polk, IA

Built 1973 Load: 36.8 t ADT: 10,100

IA 28 NB

Over: RACCOON RIVER

2.1 MILES S OF JCT I-235, Polk, IA

Built 1994 Load: 37.4 t ADT: 12,650

LOCAL ROAD

Over: WOLFE CREEK

081253605, Polk, IA

Built 1993 Load: 37.6 t ADT: 349

EB I-235

Over: WALNUT CREEK

3.4 MI. E OF W JCT. 35/80, Polk, IA

Built 1968 Load: 37.9 t ADT: 58,050

NE 80TH ST

Over: MUD CREEK

079220804, Polk, IA

Built 1990 Load: 37.9 t ADT: 528

LOCAL

Over: SMALL STREAM

079220903, Polk, IA

Built 1995 Load: 38.5 t ADT: 60

NB NW 100TH ST

Over: WALNUT CREEK

079253400, Polk, IA

Built 1988 Load: 38.7 t ADT: 3,579

SB NW 100TH ST

Over: WALNUT CREEK

079253400, Polk, IA

Built 1988 Load: 38.7 t ADT: 3,203

NE 36TH STREET

Over: FOURMILE CREEK

080241201, Polk, IA

Built 1990 Load: 38.8 t ADT: 3,156

MEREDITH DR

Over: N WALNUT CREEK

O39400540, Polk, IA

Built 1989 Load: 39.3 t ADT: 12,150

LOCAL NE 54TH

Over: FOUR MILE CREEK

080240100, Polk, IA

Built 1990 Load: 39.5 t ADT: 1,377

SB I-35,WB I-80

Over: DRAINAGE DITCH

0.8 mi. W of Jct. IA 415, Polk, IA

Built 1958 Load: 40.0 t ADT: 48,000

LOCAL

Over: SPRING CREEK

078220705, Polk, IA

Built 1975 Load: 42.1 t ADT: 597

SW 42ND ST

Over: FRINK CREEK

078243000, Polk, IA

Built 1976 Load: 42.4 t ADT: 121

FM NE 46TH ST

Over: MUCHIKINOCK CREEK

080233402, Polk, IA

Built 1990 Load: 43.4 t ADT: 270

BIRDLAND DRIVE

Over: BIRDLAND LAGOON

079243583, Polk, IA

Built 1930 Load: 44.3 t ADT: 351

WB IA 163

Over: MUD CREEK

2.3 MILES W OF JCT IA 316, Polk, IA

Built 1963 Load: 44.8 t ADT: 7,450

FM NE 46TH ST

Over: MUCHIKINOCK CREEK

080233402, Polk, IA

Built 1990 Load: 45.9 t ADT: 270

BUFFALO RD

Over: WALNUT CREEK

078250300, Polk, IA

Built 1991 Load: 47.1 t ADT: 727

FM

Over: SPRING CREEK

078232407, Polk, IA

Built 1978 Load: 47.2 t ADT: 649

FM

Over: TRIB. TO BIG CREEK

081250901, Polk, IA

Built 1991 Load: 49.2 t ADT: 150

EP TRUE PARKWAY

Over: JORDON CREEK

P27050490, Polk, IA

Built 1990 Load: 49.2 t ADT: 11,432

FM

Over: WHITE OAK CREEK

081231603, Polk, IA

Built 1990 Load: 51.2 t ADT: 270

NE 46TH ST

Over: MUCHIKINOCK CREEK

080233402, Polk, IA

Built 1990 Load: 65.6 t ADT: 270

E HARTFORD AVE

Over: CREEK

078241100, Polk, IA

Built 1980 Load: 88.9 t ADT: 5,181

LOCAL ROAD

Over: CREEK

079230401, Polk, IA

Built 2003 Load: 18.4 t ADT: 60

FM

Over: STREAM

080222706, Polk, IA

Built 1975 Load: 18.8 t ADT: 417

FM

Over: FOUR MILE CREEK

081240901, Polk, IA

Built 1975 Load: 21.0 t ADT: 259

FM

Over: BRANCH OF BIG CREEK

081250903, Polk, IA

Built 1971 Load: 21.4 t ADT: 79

GRAND AVE

Over: DRAINAGE

Grand Ave, Polk, IA

Built 2017 Load: 22.0 t ADT: 95

FM

Over: WHITE OAK CREEK

081230904, Polk, IA

Built 1969 Load: 23.0 t ADT: 660

34TH ST

Over: STREAM

P61450550, Polk, IA

Built 1990 Load: 23.1 t ADT: 651

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

Related

Browse all → | Rankings →

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