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:

NE CORY GROVE RD

Over: OLD CHANNEL

081232506, Polk, IA

Built 2000 Load: 23.9 t ADT: 11

NE 126TH AVE

Over: DRAINAGE DITCH

081233603, Polk, IA

Built 2000 Load: 24.8 t ADT: 816

WISTFUL VISTA

Over: JORDAN CREEK

000000000, Polk, IA

Built 1996 Load: 24.9 t ADT: 651

ASPEN DR

Over: WESTERN HILLS CREEK

000000000, Polk, IA

Built 1994 Load: 25.3 t ADT: 651

WHITE OAK DR

Over: WHITE OAK CREEK

081231606, Polk, IA

Built 2011 Load: 25.6 t ADT: 499

FM

Over: DRAINAGE DITCH #38

080221302, Polk, IA

Built 2001 Load: 26.2 t ADT: 409

NE 134TH AVE

Over: DITCH NO 4

081223005, Polk, IA

Built 2000 Load: 26.3 t ADT: 777

FM

Over: E FOURMILE CK

079232603, Polk, IA

Built 2005 Load: 26.8 t ADT: 2,560

NW 54TH AVE

Over: DRAINAGE DISTRICT 1

0107924, Polk, IA

Built 2011 Load: 26.9 t ADT: 956

FM

Over: ROCK CREEK

080243204, Polk, IA

Built 1981 Load: 27.7 t ADT: 1,752

FM

Over: FOURMILE CREEK

080232918, Polk, IA

Built 1986 Load: 28.1 t ADT: 1,047

FM

Over: SKUNK RIVER

081223006, Polk, IA

Built 1973 Load: 28.5 t ADT: 967

US 65

Over: MUD CREEK

IN BONDURANT, Polk, IA

Built 1974 Load: 28.6 t ADT: 13,800

FM

Over: SKUNK RIVER

080222402, Polk, IA

Built 1961 Load: 28.8 t ADT: 588

FM

Over: CREEK

079242204, Polk, IA

Built 1974 Load: 29.2 t ADT: 3,426

FM

Over: BRANCH DES MOINES RIVER

079242206, Polk, IA

Built 1974 Load: 29.2 t ADT: 3,685

LOCAL

Over: SPRING CREEK

078221906, Polk, IA

Built 1986 Load: 30.2 t ADT: 71

US 69

Over: YEADER CREEK

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

Built 1984 Load: 30.3 t ADT: 32,600

NB I-35,EB I-80

Over: DES MOINES RVR BIKE PATH

1.6 MI. E OF JCT. IA 28, Polk, IA

Built 1958 Load: 32.3 t ADT: 48,000

FM

Over: FOURMILE CREEK

079232013, Polk, IA

Built 1981 Load: 32.3 t ADT: 6,573

US 6

Over: FOUR MILE CREEK & TRAIL

1.3 MI. E OF JCT. I-235, Polk, IA

Built 2014 Load: 32.4 t ADT: 14,300

ARMY POST RD

Over: NATURE TRAIL & CK

078243600, Polk, IA

Built 2015 Load: 32.4 t ADT: 121

I 35 SB

Over: IAIS RR

0.2 mi. S of Grand Ave., Polk, IA

Built 2013 Load: 32.4 t ADT: 24,650

I 35 NB

Over: FOUR MILE CREEK

3.1 MILES N OF JCT IA 160, Polk, IA

Built 2018 Load: 32.4 t ADT: 28,400

I 35 SB

Over: FOUR MILE CREEK

3.1 MI. N OF JCT. IA 160, Polk, IA

Built 2020 Load: 32.4 t ADT: 28,400

EVERGREEN AVE

Over: EASTER LAKE

078231900, Polk, IA

Built 2018 Load: 32.4 t ADT: 1,686

NE 54TH ST

Over: BR OF FOUR MI CR

080240103, Polk, IA

Built 2019 Load: 32.4 t ADT: 643

NW 5TH ST

Over: NORTH CREEK

080241600, Polk, IA

Built 2013 Load: 32.4 t ADT: 1,820

NW 2ND ST

Over: MUD CREEK

080233601, Polk, IA

Built 2020 Load: 32.4 t ADT: 2,604

I35 NB OFF RAMP

Over: IAIS RR

0.9 mi. N jct. IA 5, Polk, IA

Built 2014 Load: 32.4 t ADT: 4,330

US 65 NB

Over: DESMOINES RVR S OVERFLOW

1.0 MI N OF SE 64TH AVE, Polk, IA

Built 2013 Load: 32.4 t ADT: 12,450

US 65 SB

Over: DES MOINES RVR MID OVRFW

1.1 MI. N of SE 64th AVE., Polk, IA

Built 2014 Load: 32.4 t ADT: 12,450

IA 28 SB

Over: RACCOON RIVER

3.7 MI. N. OF IA 5, Polk, IA

Built 2022 Load: 32.4 t ADT: 12,600

POLK CITY DRIVE

Over: ROCK CREEK

080242113, Polk, IA

Built 2000 Load: 32.7 t ADT: 2,380

NE 62

Over: SMALL STREAM

079230700, Polk, IA

Built 2003 Load: 32.7 t ADT: 6,038

FM

Over: BRANCH FOUR MILE CREEK

079230800, Polk, IA

Built 2003 Load: 32.7 t ADT: 2,571

SE 37TH STREET

Over: CREEK

079251600, Polk, IA

Built 2001 Load: 32.7 t ADT: 8,166

NW 18TH ST

Over: ROCK CREEK

080241600, Polk, IA

Built 1982 Load: 32.7 t ADT: 1,649

FM

Over: SKUNK RIVER OVFLW

081223006, Polk, IA

Built 1992 Load: 32.7 t ADT: 967

LOCAL ROAD

Over: DRAINAGE DITCH

081232307, Polk, IA

Built 2000 Load: 32.7 t ADT: 11

LOCAL ROAD

Over: OLD SKUNK R CHAN

081232401, Polk, IA

Built 1992 Load: 32.7 t ADT: 5

39TH ST

Over: JORDAN CREEK

000000000, Polk, IA

Built 1974 Load: 32.7 t ADT: 2,565

50TH ST

Over: JORDAN CREEK

000000000, Polk, IA

Built 2005 Load: 32.7 t ADT: 8,476

NETRILEIN DR

Over: BR.FOUR MILE CREEK

080241300, Polk, IA

Built 1991 Load: 32.7 t ADT: 1,404

LINCOLN ST.

Over: DRAINAGE DITCH

080223100, Polk, IA

Built 1996 Load: 32.7 t ADT: 1,190

NW 18TH STREET

Over: ROCK CREEK

080241001, Polk, IA

Built 2003 Load: 32.7 t ADT: 5,613

SW STATE STREET

Over: SAYLOR CREEK

080242700, Polk, IA

Built 1997 Load: 32.7 t ADT: 748

MLK JR PKWY E/W

Over: RACCOON RIVER

078240801, Polk, IA

Built 2005 Load: 32.7 t ADT: 7,253

LITTLE 4 MI CRK DR

Over: E FOUR MILE CREEK

078230400, Polk, IA

Built 2004 Load: 32.7 t ADT: 2,740

NORTH JAMES ST

Over: TRIB LITTLE BEAVER CREEK

080253200, Polk, IA

Built 2006 Load: 32.7 t ADT: 5,988

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