FM over Raccoon River

Fair

Sac County, Iowa · 086351410 · Structure no. 000000000298921

Built: 1985; 40 years old
Condition: Fair; inspected August 2024
Type: Slab; Concrete Continuous
Length: 205 ft; 4 main spans
Daily traffic: 159; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Raccoon River is a concrete continuous slab carrying FM over Raccoon River in Sac County, Iowa. It was built in 1985, so it is 40 years old, younger 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 159 vehicles a day, projected to reach 159 by 2044. The structure is 205 ft (62.5 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps

CarriesFM

CrossesRaccoon River

Location086351410

RouteCounty Highway 0

CountySac County

StateIowa

Coordinates42.26431, -94.88708

Functional classRural Minor 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
Deck	6 Satisfactory	Structural elements show some minor deterioration.
Superstructure	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure	7 Good	Some minor problems.
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionAugust 2024

Inspection intervalevery 48 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

Deck geometry6: Equal to present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating80.9 US tons

Inventory rating48.5 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans4

Design loadH 20

Structure length205 ft (62.5 m)

Longest span57 ft (17.4 m)

Deck width33 ft (10 m)

Roadway width30 ft (9 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic159 (2022)

Projected traffic159 by 2044

Trucks0%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed6.2 mi (10 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 Raccoon River built?

It was built in 1985, making it 40 years old in 2025.

What condition is FM over Raccoon River 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 August 2024.

How much traffic does FM over Raccoon River carry?

About 159 vehicles per day (2022 count).

How long is FM over Raccoon River?

The structure is 205 ft (62.5 m) long with a longest span of 57 ft (17.4 m) and a deck 33 ft wide.

Who owns FM over Raccoon River?

It is owned by the County Highway Agency.