FM over Unnamed Creek

Good

Ida County, Iowa · 089393001 · Structure no. 000000000187421

Built: 2005; 20 years old
Condition: Good; inspected March 2021
Type: Culvert; Concrete Continuous
Length: 20 ft; 2 main spans
Daily traffic: 609; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Unnamed Creek is a concrete continuous culvert carrying FM over Unnamed Creek in Ida County, Iowa. It was built in 2005, so it is 20 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 609 vehicles a day, roughly 8% of them trucks, projected to reach 609 by 2043. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesFM

CrossesUnnamed Creek

Location089393001

RouteCounty Highway 0

CountyIda County

StateIowa

Coordinates42.50381, -95.48825

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.

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

Last inspectionMarch 2021

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 rating48.6 US tons

Inventory rating36 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans2

Design loadHS 20

Structure length20 ft (6.1 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 traffic609 (2022)

Projected traffic609 by 2043

Trucks8%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed1.9 mi (3 km)

TollOn a free road

National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency

Maintained byCounty Highway Agency

Historic statusPossibly eligible for the National Register; requires further investigation

Work proposedOther structural work, including hydraulic replacements

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Unnamed Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is FM 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 2021.

How much traffic does FM over Unnamed Creek carry?

About 609 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is FM over Unnamed Creek?

The structure is 20 ft (6.1 m) long with a longest span of 10 ft (3 m).

Who owns FM over Unnamed Creek?

It is owned by the County Highway Agency.