US Bridges

228th ST over Small Stream

Good

Buchanan County, Iowa · 088070503 · Structure no. 000000000081701

Built
2012
13 years old
Condition
Good
inspected December 2024
Type
Slab
Concrete
Length
38 ft
1 main span
Daily traffic
51
2022 count
Owner
County
County Highway Agency

About this bridge

228th ST over Small Stream is a concrete slab carrying 228th ST over Small Stream in Buchanan County, Iowa. It was built in 2012, so it is 13 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 51 vehicles a day, projected to reach 51 by 2043. The structure is 38 ft (11.5 m) long and 29 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
Carries228th ST
CrossesSmall Stream
Location088070503
RouteCounty Highway 0
CountyBuchanan County
StateIowa
Coordinates42.45776, -91.67834
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length38 ft (11.5 m)
Longest span36 ft (11 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2022)
Projected traffic51 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 228th ST over Small Stream built?

It was built in 2012, making it 13 years old in 2025.

What condition is 228th 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 December 2024.

How much traffic does 228th ST over Small Stream carry?

About 51 vehicles per day (2022 count).

How long is 228th ST over Small Stream?

The structure is 38 ft (11.5 m) long with a longest span of 36 ft (11 m) and a deck 29 ft wide.

Who owns 228th ST over Small Stream?

It is owned by the County Highway Agency.