Polk County, IA

415 public highway bridges

Polk County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Polk County, Iowa contains 415 public highway bridges. Roughly 35.4% are rated “Good,” 25.3% “Fair,” and 6% “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.

415

Total Bridges

35.4%

Good

25.3%

Fair

6%

Poor Condition

Condition Distribution

Good

35.4% (147)

Fair

25.3% (105)

Poor

6% (25)

All Bridges (415)

Sort:

I-35 & I-80

Over: N WALNUT CREEK

1.1 MILES E OF JCT IA 141, Polk, IA

Built 1958 Load: 18.1 t ADT: 79,500

FM S.E.124TH

Over: CAMP CREEK

078222404, Polk, IA

Built 1954 Load: 18.1 t ADT: 71

LOCAL ROAD

Over: CAMP CREEK

079222305, Polk, IA

Built 1958 Load: 18.2 t ADT: 34

FM

Over: DRAINAGE

081220702, Polk, IA

Built 1967 Load: 18.2 t ADT: 439

FM

Over: BRANCH FOUR MILE CREEK

081241001, Polk, IA

Built 1975 Load: 18.7 t ADT: 259

LOCAL RD

Over: BRANCH FOUR MILE CREEK

081243504, Polk, IA

Built 1975 Load: 19.1 t ADT: 15

LOCAL ROAD

Over: OLD CHANNEL

081223201, Polk, IA

Built 1969 Load: 19.5 t ADT: 60

WESTERN HILLS D

Over: WESTERN HILLS CREEK

000000000, Polk, IA

Built 1994 Load: 20.1 t ADT: 716

LOCAL ROAD

Over: FOUR MILE CREEK

081241601, Polk, IA

Built 1926 Load: 20.5 t ADT: 26

NW MADRID DR.

Over: BIG CREEK DIV.CHL

081253504, Polk, IA

Built 1970 Load: 21.4 t ADT: 1,314

LOCAL RD

Over: BRANCH OF BIG CREEK

081250302, Polk, IA

Built 1975 Load: 21.9 t ADT: 71

AURORA AVE

Over: N WALNUT CREEK

O38090555, Polk, IA

Built 1991 Load: 21.9 t ADT: 1,821

LOCAL ROAD

Over: MUD CREEK

079221703, Polk, IA

Built 1900 Load: 22.2 t ADT: 210

US 65

Over: DRAINAGE DITCH

4.5 MILES N OF JCT SR S14, Polk, IA

Built 1978 Load: 22.9 t ADT: 9,600

FM

Over: MUCHIKINOCK CREEK

079230901, Polk, IA

Built 1969 Load: 23.0 t ADT: 2,998

NB I-35,EB I-80

Over: SAYLOR CREEK

0.5 MI. W OF JCT. 415, Polk, IA

Built 1958 Load: 23.4 t ADT: 43,750

FM

Over: FOUR MILE CREEK

080233205, Polk, IA

Built 1966 Load: 23.5 t ADT: 5,776

S 35TH ST

Over: STREAM

000000000, Polk, IA

Built 1991 Load: 24.0 t ADT: 1,252

VALLEY WEST DRIVE

Over: JORDAN CREEK

000000000, Polk, IA

Built 1984 Load: 24.6 t ADT: 11,678

FM

Over: OLD SKUNK RIV CHANNEL

081223006, Polk, IA

Built 1990 Load: 25.2 t ADT: 967

FM

Over: SPRING CREEK

078223003, Polk, IA

Built 1968 Load: 25.6 t ADT: 1,215

LOCAL ROAD

Over: CREEK

081223502, Polk, IA

Built 1900 Load: 25.9 t ADT: 40

FM

Over: TURKEY CREEK

081251101, Polk, IA

Built 1997 Load: 25.9 t ADT: 159

LOCAL

Over: MUD CREEK

079222803, Polk, IA

Built 1936 Load: 26.0 t ADT: 259

FM

Over: CAMP CREEK

079223602, Polk, IA

Built 1957 Load: 26.0 t ADT: 837

IA 316

Over: DES MOINES RIVER

3.9 MILES N OF JCT IA 5, Polk, IA

Built 1968 Load: 26.4 t ADT: 810

FM

Over: STREAM

079222408, Polk, IA

Built 1979 Load: 26.4 t ADT: 856

FM

Over: BR SKUNK RIVER

080220906, Polk, IA

Built 1927 Load: 26.4 t ADT: 89

FM

Over: SPRING CREEK

079223202, Polk, IA

Built 1990 Load: 26.8 t ADT: 3,924

LOCAL ROAD

Over: CREEK

081222001, Polk, IA

Built 1963 Load: 27.3 t ADT: 11

LOCAL

Over: FOUR MILE CREEK

081241502, Polk, IA

Built 1970 Load: 27.3 t ADT: 50

FM

Over: BEAVER CREEK

080251708, Polk, IA

Built 1972 Load: 27.7 t ADT: 1,524

EASTER LK DR

Over: BR EASTER LAKE

078233000, Polk, IA

Built 1967 Load: 28.1 t ADT: 4,097

I-235 & 17TH ST

Over: BLUE CREEK

1.1 MILES W OF JCT IA 28, Polk, IA

Built 1968 Load: 28.3 t ADT: 113,200

NB US 65

Over: SKUNK RIVER

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

Built 1972 Load: 28.4 t ADT: 4,800

FM

Over: MUD CREEK

078222705, Polk, IA

Built 1968 Load: 28.5 t ADT: 796

FM

Over: SMALL STREAM

079240351, Polk, IA

Built 1972 Load: 28.8 t ADT: 5,178

FM

Over: FOUR MILE CREEK

079230803, Polk, IA

Built 1966 Load: 29.2 t ADT: 3,715

FM

Over: INDIAN CREEK

081221202, Polk, IA

Built 1958 Load: 30.3 t ADT: 139

FM SE 6TH AV

Over: BRANCH DES MOINES RIVER

078220701, Polk, IA

Built 1972 Load: 30.8 t ADT: 678

PLUM DR

Over: NORTH WALNUT CREEK

0000000000, Polk, IA

Built 2011 Load: 31.0 t ADT: 2,628

WB I-80

Over: FOURMILE CREEK

1.4 MILE E OF E JCT I-35, Polk, IA

Built 1959 Load: 31.1 t ADT: 44,500

NB I-35,EB I-80

Over: DRAINAGE DITCH

0.8 MI. W OF JCT. IA 415, Polk, IA

Built 1958 Load: 32.1 t ADT: 48,000

PRAIRIE VIEW RD

Over: JORDON CREEK

000000000, Polk, IA

Built 1990 Load: 32.1 t ADT: 2,477

MERLE HAY RD

Over: BEAVER CREEK

000000000, Polk, IA

Built 1957 Load: 32.4 t ADT: 9,700

E HARTFORD AVE

Over: CREEK

078241300, Polk, IA

Built 1980 Load: 32.4 t ADT: 161

I-80

Over: MUD CREEK

2.3 MILES E OF JCT US 6, Polk, IA

Built 1959 Load: 32.7 t ADT: 38,700

FM

Over: DRAINAGE DITCH

078220610, Polk, IA

Built 1967 Load: 32.7 t ADT: 3,605

FM

Over: MUCHIKINOCK CREEK

079230804, Polk, IA

Built 1967 Load: 32.7 t ADT: 747

FM NE 46TH ST

Over: MUCHIKINOCK CREEK

080233402, Polk, IA

Built 1990 Load: 32.7 t ADT: 270

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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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.