Cheyenne over Unnamed Creek

Good

Chickasaw County, Iowa · 094140906 · Structure no. 000000000110922

Built: 2021; 4 years old
Condition: Good; inspected March 2024
Type: Culvert; Concrete Continuous
Length: 26 ft; 2 main spans
Daily traffic: 88; 2022 count
Owner: County; County Highway Agency

About this bridge

Cheyenne over Unnamed Creek is a concrete continuous culvert carrying Cheyenne over Unnamed Creek in Chickasaw County, Iowa. It was built in 2021, so it is 4 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 88 vehicles a day, projected to reach 88 by 2044. The structure is 26 ft (7.8 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCheyenne

CrossesUnnamed Creek

Location094140906

RouteCounty Highway 0

CountyChickasaw County

StateIowa

Coordinates42.97758, -92.50552

Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

Component	Rating	Meaning
Channel and channel protection	8 Very Good	No problems noted.
Culvert	8 Very Good	No problems noted.

Last inspectionMarch 2024

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation8: Equal to present desirable criteria

Waterway adequacy7: Better than present minimum criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating46.4 US tons

Inventory rating35.7 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans2

Design loadHL 93

Structure length26 ft (7.8 m)

Longest span12 ft (3.8 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic88 (2022)

Projected traffic88 by 2044

Trucks0%

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 Cheyenne over Unnamed Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is Cheyenne over Unnamed Creek 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 March 2024.

How much traffic does Cheyenne over Unnamed Creek carry?

About 88 vehicles per day (2022 count).

How long is Cheyenne over Unnamed Creek?

The structure is 26 ft (7.8 m) long with a longest span of 12 ft (3.8 m).

Who owns Cheyenne over Unnamed Creek?

It is owned by the County Highway Agency.