Woodbury County, IA

379 public highway bridges

Woodbury County Bridge Snapshot

Woodbury County, Iowa contains 379 public highway bridges in the FHWA National Bridge Inventory. Roughly 34.3% are rated “Good,” 31.7% “Fair,” 23% “Poor,” and 23% 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.

379

Total Bridges

34.3%

Good

23%

Poor

23%

Structurally Deficient

Condition Distribution

Good

34.3% (130)

Fair

31.7% (120)

Poor

23% (87)

SD

23% (87)

All Bridges (379)

Sort:

US 77

Over: MISSOURI RIVER & RD

IN SIOUX CITY, Woodbury, IA

Built 1981 ADT: 1,630

IA 12

Over: RR,RVR, STS, & IA 376

0.1 mi W of Jct. IA 376, Woodbury, IA

Built 1936 ADT: 8,500

IA 376

Over: CUNNINGHAM DR

1.1 mi S of jct IA 12, Woodbury, IA

Built 1978 ADT: 3,420

RAMP IA 12

Over: RAMP OFF IA 12 TO IA 376

At EB IA 12 and SB US 376, Woodbury, IA

Built 1967 ADT: 680

IA 376 NB

Over: BNSF UP RR-TAFT ST

0.1 MI. S. OF SR D12, Woodbury, IA

Built 2017 ADT: 1,470

SB IA 376

Over: UP BNSF RR-TAFT ST

0.1 mi. S of SR D12, Woodbury, IA

Built 1974 ADT: 1,470

D51 (260TH ST)

Over: I 29

At jct. I-29, Woodbury, IA

Built 2014 ADT: 19,300

I 29 NB

Over: 8TH ST

2.0 MI.S.OF JCT. US 20, Woodbury, IA

Built 2014 ADT: 1,050

I 29 SB

Over: FLOYD BLVD

3.0 MI. N OF JCT. US 75, Woodbury, IA

Built 2019 ADT: 3,550

AVIATION BLVD

Over: UP RR & HARBOR DR

000000000, Woodbury, IA

Built 2000 ADT: 690

US 20

Over: IA 376 & UP RR

at jct of Ia. 376, Woodbury, IA

Built 1976 ADT: 11,600

US 20 RAMPS DF

Over: RAMP OVER IA 376 & UP RR

3.8 mi. W of IA 12, Woodbury, IA

Built 1976 ADT: 11,600

US 20 RAMPS AG

Over: RAMP OVER IA 376 & RR

At jct. IA 376, Woodbury, IA

Built 1976 ADT: 11,600

I 129

Over: MISSOURI RIVER & I-29

0.5 MI.W.OF JCT.29, Woodbury, IA

Built 1976 ADT: 26,500

SB I29 TO EB 20

Over: I 29

At the Jct of I-29, Woodbury, IA

Built 1976 ADT: 26,500

US 20 RAMP G

Over: RAMP G OVER I-29

At the jct. of I-29, Woodbury, IA

Built 1976 ADT: 23,100

SO HILLS DR

Over: US 20 & US 75

3.0 mi W of IA 12, Woodbury, IA

Built 1975 ADT: 28,000

LAKEPORT ST

Over: US 20

1.5 mi. E of jct. I-29, Woodbury, IA

Built 1978 ADT: 20,100

EB US 20

Over: SERGEANT ROAD

2.1 mi. W of Jct. IA 12, Woodbury, IA

Built 1978 ADT: 2,950

WB US 20

Over: SERGEANT ROAD

2.1 mi. W of jct IA 12, Woodbury, IA

Built 1978 ADT: 2,950

EB US 20

Over: SUNNYBROOK DR

1.7 mi. W of IA 12, Woodbury, IA

Built 1978 ADT: 4,200

WB US 20

Over: SUNNYBROOK DR

1.7 mi. W of IA 12, Woodbury, IA

Built 1978 ADT: 4,200

MORNINGSIDE AVE

Over: US 20

At Jct. SR D25, Woodbury, IA

Built 1978 ADT: 25,400

SB IA 12

Over: US 20

At jct. U.S. 20/U.S. 75, Woodbury, IA

Built 1978 ADT: 8,100

NB IA 12

Over: US 20 & US 75

At jct. US 20/US 75, Woodbury, IA

Built 1978 ADT: 8,100

CORRECTIONVILLE RD

Over: US 75

1.7 mi. N of jct. IA 12, Woodbury, IA

Built 1998 ADT: 19,800

US 75 SB

Over: OUTER DR

3.5 mi. N of Jct. IA 12, Woodbury, IA

Built 2000 ADT: 2,395

US 75 NB

Over: OUTER DR

3.3 mi. N of Jct. IA 12, Woodbury, IA

Built 2000 ADT: 2,395

US 75 NB

Over: STONE AVE

0.7 mi. N of jct. IA 12, Woodbury, IA

Built 1999 ADT: 150

US 75 SB

Over: STONE AVE

0.7 mi. N of jct IA 12, Woodbury, IA

Built 1999 ADT: 150

US 75 NB

Over: TAFT ST

5.5 mi. N of US 20/IA 12, Woodbury, IA

Built 1999 ADT: 870

US 75 SB

Over: TAFT ST

5.5 mi. N of US 20/IA 12, Woodbury, IA

Built 1999 ADT: 870

US 75 SB

Over: RAILROAD & RAMP

5.8 mi. N of IA 12, Woodbury, IA

Built 1999 ADT: 3,900

US 75 NB

Over: BUS 75

5.8 mi. N of Jct. IA 12, Woodbury, IA

Built 1999 ADT: 3,900

OGDEN AVE/1ST

Over: I-29

2.5 mi. S of N jct. US 75, Woodbury, IA

Built 2003 ADT: 18,900

WESLEY PKWY

Over: TRI-VIEW & BNSF RR

At Jct. IA 12, Woodbury, IA

Built 2012 ADT: 4,640

I 29 SB

Over: IA 12 SB VIRGINIA ST

0.8 MI. S OF JCT. US 77, Woodbury, IA

Built 2019 ADT: 1,665

I 29 NB

Over: VIRGINIA ST

0.8 mi. S of jct. U.S. 77, Woodbury, IA

Built 2017 ADT: 1,665

I29NBNEBRASKASTRP

Over: IA 12 & VIRGINIA ST

I-29 NEBRASKA ST. RAMP D, Woodbury, IA

Built 2017 ADT: 3,330

I 29 SB

Over: PIERCE ST FRONTAGE RD

0.4 MI S. OF JCT. US 77, Woodbury, IA

Built 2018 ADT: 2,270

I 29 IA 12 NB

Over: PIERCE ST FRONTAGE RD

0.4 MI. S OF JCT. US 77, Woodbury, IA

Built 2017 ADT: 2,270

I 29 NB IA 12 NB

Over: HAMILTON BLVD

0.6 mi. N of US 77, Woodbury, IA

Built 2016 ADT: 1,400

LOCAL

Over: BACON CREEK TRIB.

088420106, Woodbury, IA

Built 1980 ADT: 20

LOCAL

Over: STREAM

089440102, Woodbury, IA

Built 1950 Load: 7.8 t ADT: 11

LOCAL

Over: STREAM

089430201, Woodbury, IA

Built 2005 Load: 9.3 t ADT: 26

LOCAL

Over: WEST FORK LITTLE SIOUX

088451601, Woodbury, IA

Built 1952 Load: 17.4 t ADT: 80

LOCAL

Over: MCELHANEY CREEK

089431802, Woodbury, IA

Built 2007 Load: 18.2 t ADT: 50

LOCAL

Over: STREAM

089450301, Woodbury, IA

Built 2003 Load: 19.0 t ADT: 11

IA 141

Over: W BRANCH LITTLE SIOUX

0.8 mi E of SR K64, Woodbury, IA

Built 1959 Load: 19.5 t ADT: 1,490

LOCAL

Over: WHISKEY CREEK

089462401, Woodbury, IA

Built 2005 Load: 20.6 t ADT: 20

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

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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 5, 2026