US Bridges

Charles City RD over Small Stream

Fair

Chickasaw County, Iowa · 094141804 · Structure no. 000000000008480

Built
1930
95 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
300
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Charles City RD over Small Stream is a concrete continuous culvert carrying Charles City RD over Small Stream in Chickasaw County, Iowa. It was built in 1930, so it is 95 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 5 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 300 vehicles a day, projected to reach 300 by 2043. The structure is 25 ft (7.6 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCharles City RD
CrossesSmall Stream
Location094141804
RouteCity Street 0
CountyChickasaw County
StateIowa
Coordinates42.95685, -92.54479
Functional classRural Minor 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33.5 US tons
Inventory rating20.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2022)
Projected traffic300 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Charles City RD over Small Stream built?

It was built in 1930, making it 95 years old in 2025.

What condition is Charles City RD 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 March 2023.

How much traffic does Charles City RD over Small Stream carry?

About 300 vehicles per day (2022 count).

How long is Charles City RD over Small Stream?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 29 ft wide.

Who owns Charles City RD over Small Stream?

It is owned by the City or Municipal Highway Agency.