US Bridges

530th Ave over Cylinder Creek

Fair

Palo Alto County, Iowa · 096310802 · Structure no. 000000000269630

Built
1925
100 years old, rebuilt 2005
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
55 ft
1 main span
Daily traffic
539
2021 count
Owner
County
County Highway Agency

About this bridge

530th Ave over Cylinder Creek is a steel stringer/multi-beam or girder carrying 530th Ave over Cylinder Creek in Palo Alto County, Iowa. It was built in 1925 and reconstructed in 2005, so it is 100 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 539 vehicles a day, projected to reach 539 by 2043. The structure is 55 ft (16.8 m) long and 28 ft wide.

Location

Open in Google Maps
Carries530th Ave
CrossesCylinder Creek
Location096310802
RouteCounty Highway 0
CountyPalo Alto County
StateIowa
Coordinates43.14144, -94.54154
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating43.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span50 ft (15.2 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic539 (2021)
Projected traffic539 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 530th Ave over Cylinder Creek built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 2005.

What condition is 530th Ave over Cylinder Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does 530th Ave over Cylinder Creek carry?

About 539 vehicles per day (2021 count).

How long is 530th Ave over Cylinder Creek?

The structure is 55 ft (16.8 m) long with a longest span of 50 ft (15.2 m) and a deck 28 ft wide.

Who owns 530th Ave over Cylinder Creek?

It is owned by the County Highway Agency.