US Bridges

280th ST over Field Stream

Good

Carroll County, Iowa · 082350401 · Structure no. 000000000093541

Built
2022
3 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete Continuous
Length
83 ft
3 main spans
Daily traffic
60
2022 count
Owner
County
County Highway Agency

About this bridge

280th ST over Field Stream is a concrete continuous slab carrying 280th ST over Field Stream in Carroll County, Iowa. It was built in 2022, so it is 3 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 60 vehicles a day, projected to reach 60 by 2044. The structure is 83 ft (25.3 m) long and 33 ft wide.

Carries280th ST
CrossesField Stream
Location082350401
RouteCounty Highway 0
StateIowa
Coordinates41.9502, -94.92798
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating42.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length83 ft (25.3 m)
Longest span31 ft (9.4 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2022)
Projected traffic60 by 2044
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 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 280th ST over Field Stream built?

It was built in 2022, making it 3 years old in 2025.

What condition is 280th ST over Field Stream in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does 280th ST over Field Stream carry?

About 60 vehicles per day (2022 count).

How long is 280th ST over Field Stream?

The structure is 83 ft (25.3 m) long with a longest span of 31 ft (9.4 m) and a deck 33 ft wide.

Who owns 280th ST over Field Stream?

It is owned by the County Highway Agency.