US Bridges

C 33 over Small Stream

Fair

Butler County, Iowa · 092151705 · Structure no. 000000000088380

Built
1966
59 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
1,002
2022 count
Owner
County
County Highway Agency

About this bridge

C 33 over Small Stream is a prestressed concrete stringer/multi-beam or girder carrying C 33 over Small Stream in Butler County, Iowa. It was built in 1966, so it is 59 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 1,002 vehicles a day, roughly 12% of them trucks, projected to reach 1,002 by 2044. The structure is 60 ft (18.3 m) long and 30 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesC 33
CrossesSmall Stream
Location092151705
RouteCounty Highway 0
StateIowa
Coordinates42.78255, -92.64158
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57.7 US tons
Inventory rating25.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length60 ft (18.3 m)
Longest span59 ft (18 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,002 (2022)
Projected traffic1,002 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was C 33 over Small Stream built?

It was built in 1966, making it 59 years old in 2025.

What condition is C 33 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 C 33 over Small Stream carry?

About 1,002 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is C 33 over Small Stream?

The structure is 60 ft (18.3 m) long with a longest span of 59 ft (18 m) and a deck 30 ft wide.

Who owns C 33 over Small Stream?

It is owned by the County Highway Agency.