FM over Inlet Creek

Good

Sac County, Iowa · 086362209 · Structure no. 000000000299101

Built: 1987; 38 years old
Condition: Good; inspected August 2022
Type: Culvert; Concrete Continuous
Length: 26 ft; 2 main spans
Daily traffic: 638; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Inlet Creek is a concrete continuous culvert carrying FM over Inlet Creek in Sac County, Iowa. It was built in 1987, so it is 38 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 638 vehicles a day, roughly 17% of them trucks, projected to reach 638 by 2043. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesFM

CrossesInlet Creek

Location086362209

RouteCounty Highway 0

CountySac County

StateIowa

Coordinates42.25371, -95.01647

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	6 Satisfactory	Structural elements show some minor deterioration.
Culvert	7 Good	Some minor problems.

Last inspectionAugust 2022

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation7: Better than present minimum criteria

Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is

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 length26 ft (7.9 m)

Longest span12 ft (3.7 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic638 (2022)

Projected traffic638 by 2043

Trucks17%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed5 mi (8 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 Inlet Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is FM over Inlet 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 August 2022.

How much traffic does FM over Inlet Creek carry?

About 638 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is FM over Inlet Creek?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns FM over Inlet Creek?

It is owned by the County Highway Agency.