US Bridges

220th ST over Small Natural Stream

Fair

Buchanan County, Iowa · 088100615 · Structure no. 000000000015811

Built
1999
26 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
20 ft
2 main spans
Daily traffic
2,494
2022 count
Owner
County
County Highway Agency

About this bridge

220th ST over Small Natural Stream is a concrete culvert carrying 220th ST over Small Natural Stream in Buchanan County, Iowa. It was built in 1999, so it is 26 years old, younger 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 2,494 vehicles a day, roughly 17% of them trucks, projected to reach 2,494 by 2043. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries220th ST
CrossesSmall Natural Stream
Location088100615
RouteCounty Highway 0
CountyBuchanan County
StateIowa
Coordinates42.46814, -92.05075
Functional classRural Major 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating37.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,494 (2022)
Projected traffic2,494 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 220th ST over Small Natural Stream built?

It was built in 1999, making it 26 years old in 2025.

What condition is 220th ST over Small Natural 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 December 2024.

How much traffic does 220th ST over Small Natural Stream carry?

About 2,494 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is 220th ST over Small Natural Stream?

The structure is 20 ft (6.1 m) long with a longest span of 10 ft (3 m).

Who owns 220th ST over Small Natural Stream?

It is owned by the County Highway Agency.