US Bridges

FM 280 Ave over Small Stream

Fair

Delaware County, Iowa · 090031804 · Structure no. 000000000142140

Built
1962
63 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
98
2022 count
Owner
County
County Highway Agency

About this bridge

FM 280 Ave over Small Stream is a concrete culvert carrying FM 280 Ave over Small Stream in Delaware County, Iowa. It was built in 1962, so it is 63 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 98 vehicles a day, projected to reach 98 by 2044. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM 280 Ave
CrossesSmall Stream
Location090031804
RouteCounty Highway 0
CountyDelaware County
StateIowa
Coordinates42.6027, -91.25211
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.6 US tons
Inventory rating18.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length22 ft (6.7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98 (2022)
Projected traffic98 by 2044
Trucks0%
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 280 Ave over Small Stream built?

It was built in 1962, making it 63 years old in 2025.

What condition is FM 280 Ave over Small Stream 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 October 2024.

How much traffic does FM 280 Ave over Small Stream carry?

About 98 vehicles per day (2022 count).

How long is FM 280 Ave over Small Stream?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.4 m).

Who owns FM 280 Ave over Small Stream?

It is owned by the County Highway Agency.