FM over Aldrich Creek

Fair

Ida County, Iowa · 087412001 · Structure no. 000000000186440

Built: 1970; 55 years old
Condition: Fair; inspected March 2023
Type: Culvert; Concrete Continuous
Length: 28 ft; 2 main spans
Daily traffic: 210; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Aldrich Creek is a concrete continuous culvert carrying FM over Aldrich Creek in Ida County, Iowa. It was built in 1970, so it is 55 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 210 vehicles a day, roughly 25% of them trucks, projected to reach 210 by 2043. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesFM

CrossesAldrich Creek

Location087412001

RouteCounty Highway 0

CountyIda County

StateIowa

Coordinates42.34161, -95.63554

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.

Component	Rating	Meaning
Channel and channel protection	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert	5 Fair	All 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

Waterway adequacy7: Better than present minimum criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating81 US tons

Inventory rating48.6 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans2

Design loadH 20

Structure length28 ft (8.5 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 traffic210 (2022)

Projected traffic210 by 2043

Trucks25%

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 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 FM over Aldrich Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is FM over Aldrich Creek 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 FM over Aldrich Creek carry?

About 210 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is FM over Aldrich Creek?

The structure is 28 ft (8.5 m) long with a longest span of 14 ft (4.3 m).

Who owns FM over Aldrich Creek?

It is owned by the County Highway Agency.