FM over Soap Creek

Fair

Davis County, Iowa · 070120204 · Structure no. 000000000135121

Built: 1979; 46 years old
Condition: Fair; inspected May 2024
Type: Culvert; Concrete Continuous
Length: 24 ft; 2 main spans
Daily traffic: 140; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Soap Creek is a concrete continuous culvert carrying FM over Soap Creek in Davis County, Iowa. It was built in 1979, so it is 46 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 140 vehicles a day, projected to reach 140 by 2044. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesFM

CrossesSoap Creek

Location070120204

RouteCounty Highway 0

CountyDavis County

StateIowa

Coordinates40.89743, -92.21263

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	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionMay 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation6: Equal to present minimum criteria

Waterway adequacy7: Better than present minimum criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating64.3 US tons

Inventory rating38.5 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans2

Design loadH 20

Structure length24 ft (7.3 m)

Longest span11 ft (3.4 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140 (2022)

Projected traffic140 by 2044

Trucks0%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed8.7 mi (14 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 Soap Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is FM over Soap 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 May 2024.

How much traffic does FM over Soap Creek carry?

About 140 vehicles per day (2022 count).

How long is FM over Soap Creek?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.4 m).

Who owns FM over Soap Creek?

It is owned by the County Highway Agency.