US Bridges

FM over Floyd River

Good

Plymouth County, Iowa · 092453105 · Structure no. 000000000274721

Built
2007
18 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
288 ft
3 main spans
Daily traffic
1,566
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Floyd River is a prestressed concrete stringer/multi-beam or girder carrying FM over Floyd River in Plymouth County, Iowa. It was built in 2007, so it is 18 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,566 vehicles a day, roughly 19% of them trucks, projected to reach 1,566 by 2044. The structure is 288 ft (87.8 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM
CrossesFloyd River
Location092453105
RouteCounty Highway 0
StateIowa
Coordinates42.7497, -96.20959
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
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 evaluation8: Equal to present desirable 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 rating91.4 US tons
Inventory rating41 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length288 ft (87.8 m)
Longest span96 ft (29.3 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,566 (2022)
Projected traffic1,566 by 2044
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Floyd River built?

It was built in 2007, making it 18 years old in 2025.

What condition is FM over Floyd 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 Floyd River carry?

About 1,566 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is FM over Floyd River?

The structure is 288 ft (87.8 m) long with a longest span of 96 ft (29.3 m) and a deck 33 ft wide.

Who owns FM over Floyd River?

It is owned by the County Highway Agency.