US Bridges

285th ST over Small Stream

Good

Cerro Gordo County, Iowa · 0.25 MI E S34 · Structure no. 000000000366295

Built
2016
9 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
135
2022 count
Owner
County
County Highway Agency

About this bridge

285th ST over Small Stream is a concrete culvert carrying 285th ST over Small Stream in Cerro Gordo County, Iowa. It was built in 2016, so it is 9 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 135 vehicles a day, projected to reach 135 by 2044. The structure is 26 ft (8 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries285th ST
CrossesSmall Stream
Location0.25 MI E S34
RouteCounty Highway 0
CountyCerro Gordo County
StateIowa
Coordinates43.1769, -93.25529
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length26 ft (8 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic135 (2022)
Projected traffic135 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 285th ST over Small Stream built?

It was built in 2016, making it 9 years old in 2025.

What condition is 285th ST over Small 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 January 2024.

How much traffic does 285th ST over Small Stream carry?

About 135 vehicles per day (2022 count).

How long is 285th ST over Small Stream?

The structure is 26 ft (8 m) long with a longest span of 12 ft (3.7 m).

Who owns 285th ST over Small Stream?

It is owned by the County Highway Agency.