US Bridges

C33 over Small Stream

Good

Butler County, Iowa · 092161701 · Structure no. 000000000088581

Built
1993
32 years old
Condition
Good
inspected April 2022
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
609
2022 count
Owner
County
County Highway Agency

About this bridge

C33 over Small Stream is a concrete continuous culvert carrying C33 over Small Stream in Butler County, Iowa. It was built in 1993, so it is 32 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 609 vehicles a day, roughly 12% of them trucks, projected to reach 609 by 2043. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesC33
CrossesSmall Stream
Location092161701
RouteCounty Highway 0
StateIowa
Coordinates42.78833, -92.75582
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic609 (2022)
Projected traffic609 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 C33 over Small Stream built?

It was built in 1993, making it 32 years old in 2025.

What condition is C33 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 April 2022.

How much traffic does C33 over Small Stream carry?

About 609 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is C33 over Small Stream?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m).

Who owns C33 over Small Stream?

It is owned by the County Highway Agency.