US Bridges

FM C-60 over Floyd River

Good

Plymouth County, Iowa · 090460905 · Structure no. 000000000271631

Built
1985
40 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
243 ft
3 main spans
Daily traffic
1,586
2022 count
Owner
County
County Highway Agency

About this bridge

FM C-60 over Floyd River is a prestressed concrete stringer/multi-beam or girder carrying FM C-60 over Floyd River in Plymouth 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 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 1,586 vehicles a day, roughly 14% of them trucks, projected to reach 1,586 by 2044. The structure is 243 ft (74.1 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFM C-60
CrossesFloyd River
Location090460905
RouteCounty Highway 0
StateIowa
Coordinates42.62653, -96.28374
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.6 US tons
Inventory rating27.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length243 ft (74.1 m)
Longest span81 ft (24.7 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,586 (2022)
Projected traffic1,586 by 2044
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM C-60 over Floyd River built?

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

What condition is FM C-60 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 July 2024.

How much traffic does FM C-60 over Floyd River carry?

About 1,586 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is FM C-60 over Floyd River?

The structure is 243 ft (74.1 m) long with a longest span of 81 ft (24.7 m) and a deck 33 ft wide.

Who owns FM C-60 over Floyd River?

It is owned by the County Highway Agency.