US Bridges

FM 580th ST over Perry Creek

Fair

Cherokee County, Iowa · 091402901 · Structure no. 000000000108191

Built
1979
46 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete Continuous
Length
90 ft
3 main spans
Daily traffic
199
2022 count
Owner
County
County Highway Agency

About this bridge

FM 580th ST over Perry Creek is a concrete continuous slab carrying FM 580th ST over Perry Creek in Cherokee County, Iowa. It was built in 1979, so it is 46 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 5 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 199 vehicles a day, roughly 29% of them trucks, projected to reach 199 by 2043. The structure is 90 ft (27.4 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFM 580th ST
CrossesPerry Creek
Location091402901
RouteCounty Highway 0
CountyCherokee County
StateIowa
Coordinates42.67746, -95.60305
Functional classRural Minor 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53.5 US tons
Inventory rating33.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length90 ft (27.4 m)
Longest span34 ft (10.4 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic199 (2022)
Projected traffic199 by 2043
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$30,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 580th ST over Perry Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is FM 580th ST over Perry 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 August 2023.

How much traffic does FM 580th ST over Perry Creek carry?

About 199 vehicles per day (2022 count), of which roughly 29% are trucks.

How long is FM 580th ST over Perry Creek?

The structure is 90 ft (27.4 m) long with a longest span of 34 ft (10.4 m) and a deck 32 ft wide.

Who owns FM 580th ST over Perry Creek?

It is owned by the County Highway Agency.