US Bridges

FM 280th ST over Stoney Creek

Fair

Clay County, Iowa · 097381001 · Structure no. 000000000117660

Built
1965
60 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete Continuous
Length
128 ft
3 main spans
Daily traffic
270
2022 count
Owner
County
County Highway Agency

About this bridge

FM 280th ST over Stoney Creek is a concrete continuous slab carrying FM 280th ST over Stoney Creek in Clay County, Iowa. It was built in 1965, so it is 60 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 270 vehicles a day, roughly 18% of them trucks, projected to reach 270 by 2042. The structure is 128 ft (39 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM 280th ST
CrossesStoney Creek
Location097381001
RouteCounty Highway 0
CountyClay County
StateIowa
Coordinates43.24145, -95.32711
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length128 ft (39 m)
Longest span49 ft (14.9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic270 (2022)
Projected traffic270 by 2042
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 280th ST over Stoney Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is FM 280th ST over Stoney 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 December 2024.

How much traffic does FM 280th ST over Stoney Creek carry?

About 270 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is FM 280th ST over Stoney Creek?

The structure is 128 ft (39 m) long with a longest span of 49 ft (14.9 m) and a deck 30 ft wide.

Who owns FM 280th ST over Stoney Creek?

It is owned by the County Highway Agency.