US Bridges

FM over Middle Raccoon River

Good

Carroll County, Iowa · 082332704 · Structure no. 000000000093060

Built
1968
57 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete Continuous
Length
125 ft
3 main spans
Daily traffic
737
2021 count
Owner
County
County Highway Agency

About this bridge

FM over Middle Raccoon River is a concrete continuous slab carrying FM over Middle Raccoon River in Carroll County, Iowa. It was built in 1968, so it is 57 years old, older 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 737 vehicles a day, roughly 10% of them trucks, projected to reach 737 by 2043. The structure is 125 ft (38.1 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFM
CrossesMiddle Raccoon River
Location082332704
RouteCounty Highway 0
StateIowa
Coordinates41.89086, -94.68626
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.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating33.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length125 ft (38.1 m)
Longest span49 ft (14.9 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic737 (2021)
Projected traffic737 by 2043
Trucks10%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Middle Raccoon River built?

It was built in 1968, making it 57 years old in 2025.

What condition is FM over Middle Raccoon River 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 June 2023.

How much traffic does FM over Middle Raccoon River carry?

About 737 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is FM over Middle Raccoon River?

The structure is 125 ft (38.1 m) long with a longest span of 49 ft (14.9 m) and a deck 30 ft wide.

Who owns FM over Middle Raccoon River?

It is owned by the County Highway Agency.