Story County, IA

262 public highway bridges

Story County Bridge Snapshot

Story County, Iowa contains 262 public highway bridges in the FHWA National Bridge Inventory. Roughly 29.8% are rated “Good,” 45.8% “Fair,” 14.5% “Poor,” and 14.5% 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.

262

Total Bridges

29.8%

Good

14.5%

Poor

14.5%

Structurally Deficient

Condition Distribution

Good

29.8% (78)

Fair

45.8% (120)

Poor

14.5% (38)

SD

14.5% (38)

All Bridges (262)

Sort:

150TH ST

Over: HAMILTON-STORY 1 OPEN

085243601, Story, IA

Built 1967 Load: 17.2 t ADT: 110

550TH AVE

Over: BALLARD CREEK

082231909, Story, IA

Built 1950 Load: 17.6 t ADT: 110

120TH ST

Over: HAMILTON-STORY 1 OPEN DD

085241501, Story, IA

Built 1940 Load: 17.8 t ADT: 50

270TH ST

Over: DRAINAGE

083233303, Story, IA

Built 1950 Load: 18.1 t ADT: 34

730TH AVE

Over: HARDIN-STORY DD 1

085211204, Story, IA

Built 1967 Load: 18.1 t ADT: 30

140TH ST

Over: DRAINAGE DITCH

085242701, Story, IA

Built 1963 Load: 18.1 t ADT: 34

MATHEWS ST

Over: DRAINAGE DITCH #70

000000000, Story, IA

Built 1969 Load: 18.1 t ADT: 1,626

270TH ST

Over: WEST BR INDIAN CREEK

083223101, Story, IA

Built 1967 Load: 18.3 t ADT: 80

520TH AVE

Over: WALNUT CREEK

083242802, Story, IA

Built 1900 Load: 19.0 t ADT: 80

PLEASANT VALLEY

Over: BEAR CREEK

084230505, Story, IA

Built 1900 Load: 19.0 t ADT: 45

530TH AVE

Over: KEIGLEY BRANCH

085242202, Story, IA

Built 1917 Load: 19.0 t ADT: 20

210TH ST

Over: MILFORD 32 DD

084233401, Story, IA

Built 1900 Load: 19.1 t ADT: 34

260TH ST

Over: DRAINAGE DITCH 13

083233003, Story, IA

Built 1968 Load: 19.3 t ADT: 50

100TH ST

Over: LONG DICK CREEK

085230301, Story, IA

Built 1955 Load: 19.4 t ADT: 45

100TH ST

Over: LONG DICK CREEK

085230301, Story, IA

Built 1955 Load: 19.4 t ADT: 45

260TH ST

Over: CLEAR CREEK

083212501, Story, IA

Built 1968 Load: 19.5 t ADT: 40

680TH AVE

Over: DYE CREEK

083221204, Story, IA

Built 1900 Load: 19.7 t ADT: 26

322ND ST

Over: CALAMUS CREEK

082222903, Story, IA

Built 1916 Load: 20.0 t ADT: 15

295TH ST

Over: CALAMUS CREEK

082231203, Story, IA

Built 1958 Load: 20.0 t ADT: 30

315TH ST

Over: DRAINAGE DITCH

082232209, Story, IA

Built 1964 Load: 20.0 t ADT: 30

550TH AVE

Over: BALLARD CREEK

000000000, Story, IA

Built 1919 Load: 20.0 t ADT: 100

610TH AVE

Over: DD 32

084233602, Story, IA

Built 1900 Load: 20.0 t ADT: 45

520TH AVE

Over: WORRELL CREEK

083241610, Story, IA

Built 1966 Load: 20.6 t ADT: 2,324

290TH ST

Over: OLD SKUNK RIVER CHANNEL

082230907, Story, IA

Built 1937 Load: 20.8 t ADT: 80

E18/130TH ST

Over: KEIGLEY BRANCH

085242101, Story, IA

Built 1967 Load: 20.8 t ADT: 1,427

250TH ST

Over: GRANT 5 OPEN DITCH

083232203, Story, IA

Built 1960 Load: 20.9 t ADT: 60

310TH ST

Over: BALLARD CREEK

082242409, Story, IA

Built 1936 Load: 21.1 t ADT: 100

160TH ST

Over: KEIGLEY BRANCH

084240101, Story, IA

Built 1915 Load: 21.1 t ADT: 30

EB US 30

Over: SOUTH SKUNK RIVER

1.2 MI. W OF JCT. I-35, Story, IA

Built 1963 Load: 21.6 t ADT: 15,600

113TH ST (FLD)

Over: ROAD DITCH

085211003, Story, IA

Built 1900 Load: 21.8 t ADT: 10

630TH AVE

Over: EAST BR INDIAN CREEK

085220502, Story, IA

Built 1955 Load: 21.8 t ADT: 11

680TH AVE

Over: DYE CREEK

083211802, Story, IA

Built 1967 Load: 22.2 t ADT: 319

170TH ST

Over: DRAINAGE DITCH 36

084221201, Story, IA

Built 1969 Load: 22.3 t ADT: 34

610TH AVE

Over: GRANT 5 OPEN DITCH

083232402, Story, IA

Built 1941 Load: 22.4 t ADT: 50

200TH ST

Over: DYE CREEK

084212901, Story, IA

Built 1950 Load: 23.5 t ADT: 40

335TH ST

Over: WOLF CREEK

082213303, Story, IA

Built 1967 Load: 23.7 t ADT: 80

E LINCOLN WAY

Over: SKUNK RIVER

A16050635, Story, IA

Built 1952 Load: 24.3 t ADT: 9,468

260TH ST

Over: EAST BR INDIAN CREEK

083222701, Story, IA

Built 1912 Load: 24.5 t ADT: 80

590TH AVE

Over: BEAR CREEK

085232202, Story, IA

Built 1970 Load: 24.5 t ADT: 60

4TH ST

Over: WALNUT CREEK

B35000505, Story, IA

Built 1974 Load: 24.5 t ADT: 278

670TH AVE

Over: SMALL STREAM

082223602, Story, IA

Built 1953 Load: 24.8 t ADT: 150

335TH LN

Over: SMALL STREAM

082223505, Story, IA

Built 1953 Load: 25.1 t ADT: 11

680TH AVE

Over: DYE CREEK

083211802, Story, IA

Built 1967 Load: 25.1 t ADT: 319

220TH ST

Over: WALNUT CREEK

083243301, Story, IA

Built 1951 Load: 25.1 t ADT: 45

527/660TH AVE

Over: EAST BR INDIAN CREEK

084220202, Story, IA

Built 1962 Load: 25.6 t ADT: 429

560TH AVE

Over: WALNUT CREEK

082230602, Story, IA

Built 1915 Load: 25.9 t ADT: 50

EB US 30

Over: BIKE PATH & TRAIL

1.1 MILES W OF JCT US 69, Story, IA

Built 1971 Load: 26.3 t ADT: 11,500

590TH AVE

Over: LONG DICK CREEK

085230302, Story, IA

Built 1975 Load: 26.3 t ADT: 60

GARNET DR

Over: FLOOD CHANNEL

A09250755, Story, IA

Built 1975 Load: 26.3 t ADT: 555

WB US 30

Over: BIKE PATH & TRAIL

1.1 MI WEST OF JCT US 69, Story, IA

Built 1971 Load: 26.5 t ADT: 13,950

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