C13 over Small Stream

Fair

Butler County, Iowa · 093161201 · Structure no. 000000000089350

Built: 1900; 125 years old
Condition: Fair; inspected April 2024
Type: Culvert; Concrete Continuous
Length: 21 ft; 2 main spans
Daily traffic: 727; 2022 count
Owner: County; County Highway Agency

About this bridge

C13 over Small Stream is a concrete continuous culvert carrying C13 over Small Stream in Butler County, Iowa. It was built in 1900, so it is 125 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 727 vehicles a day, roughly 12% of them trucks, projected to reach 727 by 2044. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesC13

CrossesSmall Stream

Location093161201

RouteCounty Highway 0

CountyButler County

StateIowa

Coordinates42.89115, -92.68961

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.

Component	Rating	Meaning
Channel and channel protection	7 Good	Some minor problems.
Culvert	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionApril 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation4: Meets minimum tolerable limits to be 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 Continuous

DeckNot applicable

Main spans2

Design loadUnknown

Structure length21 ft (6.4 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 traffic727 (2022)

Projected traffic727 by 2044

Trucks12%

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 proposedOther structural work, including hydraulic replacements

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was C13 over Small Stream built?

It was built in 1900, making it 125 years old in 2025.

What condition is C13 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 April 2024.

How much traffic does C13 over Small Stream carry?

About 727 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is C13 over Small Stream?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns C13 over Small Stream?

It is owned by the County Highway Agency.