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 NB

Over: GRAND AVE

At jct. of Grand Ave., Polk, IA

Built 2014 ADT: 1,620

I 35 NB

Over: RR, EP TRUE, CREEK

1.2 MI. S OF S JCT. I-80, Polk, IA

Built 2014 ADT: 6,800

I 35 SB I 80 WB

Over: US 6

AT JCT. US 6, Polk, IA

Built 1958 ADT: 15,750

DOUGLAS AVE

Over: I 35 & I 80

At JUNCTION I-80 & I-35, Polk, IA

Built 2002 ADT: 89,500

SB I35 WB I80

Over: NS RR & IA 141

AT JCT. IOWA 141, Polk, IA

Built 1958 ADT: 15,300

86TH ST

Over: I-35 & I-80

2.0 MI. W OF IOWA 28, Polk, IA

Built 1994 ADT: 1,660

I-80 EB & I-35 NB

Over: NW 72ND ST

1.0 MILE W OF JCT. IA 28, Polk, IA

Built 1958 ADT: 2,290

NB I-35/EB I-80

Over: IA 28

At jct. IA 28, Polk, IA

Built 1999 ADT: 1,600

SB I-35,WB I-80

Over: IA 28

At the Jct. IA 28, Polk, IA

Built 1999 ADT: 1,600

NW 26TH ST

Over: I 35 & I 80

1.7 MI. WEST OF IA 415, Polk, IA

Built 2017 ADT: 101,500

SB I-35,WB I-80

Over: 6TH AVE

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

Built 1958 ADT: 2,025

NB I 35 EB I 80

Over: IA 415

At Jct. of IA 415, Polk, IA

Built 1999 ADT: 16,400

I 80 WB I 35 SB

Over: IA 415

At Jct. of IA 415, Polk, IA

Built 1999 ADT: 16,400

NB I-35,EB I-80

Over: NE 3RD ST

0.3 mi. E of Jct. IA 415, Polk, IA

Built 2000 ADT: 1,270

I 35 NB I 80 EB

Over: US 69

AT JUNCTION WITH US 69, Polk, IA

Built 2000 ADT: 9,550

NE 22ND ST

Over: I 80 & I 35

0.3 mi. W of E jct. I-235, Polk, IA

Built 2017 ADT: 83,600

NE 54TH AVE

Over: I 35

0.5 MI. N OF I-80 JCT, Polk, IA

Built 2017 ADT: 86,200

IA 160

Over: I-35

AT JUNCTION INTERSTATE 35, Polk, IA

Built 1986 ADT: 55,600

I 35 NB

Over: E 1ST STREET

2.0 MILES N OF JCT IA 160, Polk, IA

Built 2019 ADT: 2,205

I 35 SB

Over: E 1ST STREET

2.0 mi. N of jct. IA 160, Polk, IA

Built 2020 ADT: 2,205

WB I-235

Over: I-35

AT WEST JUNCTION I-35-80, Polk, IA

Built 1966 ADT: 31,800

EB I-80

Over: NE 29TH ST

0.7 mi. E of E Jct. I-35, Polk, IA

Built 1959 ADT: 1,165

WB I-80

Over: NE 29TH ST

0.7 mi. E of E Jct. I-35, Polk, IA

Built 1959 ADT: 1,165

34TH AVE NW

Over: I-80 & US-65

0.4 MILES W OF JCT US 65, Polk, IA

Built 2013 ADT: 50,700

NE 72ND ST

Over: I-80 & US 6

1.6 mi. E of Jct. U.S. 65, Polk, IA

Built 2006 ADT: 36,100

FM NE 80TH ST

Over: I-80

2.8 MILES E OF JCT. US 65, Polk, IA

Built 1959 ADT: 39,000

NE 96TH ST

Over: I-80

1.9 MILES WEST OF SR S27, Polk, IA

Built 1959 ADT: 39,000

FM S-27

Over: I-80

At Jct. Polk Co. S27, Polk, IA

Built 1959 ADT: 36,100

I 80 EB

Over: I-35

AT W JCT. I-35, Polk, IA

Built 1966 ADT: 3,190

I 80 EB

Over: I 235

0.2 MILE E OF W JCT I-80, Polk, IA

Built 1966 ADT: 57,900

VALLEY WEST DR

Over: I 235

1.3 MI E OF W JCT 80/35, Polk, IA

Built 2003 ADT: 87,000

EB I-235

Over: 22ND ST

2.1 MI E OF W JCT I-35/80, Polk, IA

Built 1968 ADT: 3,500

EB I-235

Over: 17TH ST

1.3 mi. W of Jct. IA 28, Polk, IA

Built 1967 ADT: 900

WB I-235

Over: 17TH ST

1.3 mi. W of Jct. IA 28, Polk, IA

Built 1967 ADT: 900

EB I-235

Over: 73RD ST & RR

3.2 MI E OF W JCT I 80/35, Polk, IA

Built 1968 ADT: 9,050

IA 28

Over: I-235

At Jct. I-235, Polk, IA

Built 2004 ADT: 104,800

EB I-235

Over: CUMMINS PARKWAY

0.2 MILE E OF JCT IA 28, Polk, IA

Built 1967 ADT: 280

NB(WB) POLK BLV

Over: I-235

1.2 MILES E OF JCT IA 28, Polk, IA

Built 2003 ADT: 63,400

42ND ST SW

Over: I-235

1.5 MI EAST OF JCT IA 28, Polk, IA

Built 2003 ADT: 114,500

EB I-235

Over: 35TH STREET

2.0 MILES E OF JCT IA 28, Polk, IA

Built 2004 ADT: 2,190

WB I-235

Over: 35TH STREET

2.1 mi. E of Jct. IA #28, Polk, IA

Built 2005 ADT: 2,190

31ST STREET

Over: I-235

2.3 mi. E of Jct. IA #28, Polk, IA

Built 2005 ADT: 113,700

WB I-235

Over: 28TH STREET

2.6 mi. E of Jct. IA 28, Polk, IA

Built 2005 ADT: 895

W 19TH ST

Over: I-235

3.3 MILES E OF JCT IA 28, Polk, IA

Built 2003 ADT: 91,500

EB I-235

Over: KEO WAY

3.6 mi. E of Jct. IA 28, Polk, IA

Built 2006 ADT: 4,900

WB I-235

Over: KEO WAY

3.6 MILES E OF JCT. IA 28, Polk, IA

Built 2005 ADT: 4,900

9TH STREET

Over: I-235

3.9 mi. E of Jct. IA 28, Polk, IA

Built 2007 ADT: 78,900

6TH AVE

Over: I-235

1.4 miles west of US 69, Polk, IA

Built 2004 ADT: 90,300

3RD ST

Over: I-235

4.3 mi. E of Jct. IA #28, Polk, IA

Built 2003 ADT: 83,600

2ND AVE ON RAMP

Over: S-W CONN OVER WB I-235

4.4 MILES E OF JCT IA 28, Polk, IA

Built 2002 ADT: 89,000

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.