FM over Gizzard Creek

Fair

Floyd County, Iowa · 095152301 · Structure no. 000000000154420

Built: 1958; 67 years old, rebuilt 1969
Condition: Fair; inspected March 2024
Type: Culvert; Concrete Continuous
Length: 38 ft; 3 main spans
Daily traffic: 678; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Gizzard Creek is a concrete continuous culvert carrying FM over Gizzard Creek in Floyd County, Iowa. It was built in 1958 and reconstructed in 1969, so it is 67 years old, older 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 6 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 678 vehicles a day, roughly 17% of them trucks, projected to reach 678 by 2044. The structure is 38 ft (11.6 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesFM

CrossesGizzard Creek

Location095152301

RouteCounty Highway 0

CountyFloyd County

StateIowa

Coordinates43.03797, -92.58276

Functional classRural Major 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
Channel and channel protection	7 Good	Some minor problems.
Culvert	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionMarch 2024

Inspection intervalevery 24 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 geometry7: Better than present minimum criteria

Waterway adequacy6: Equal to present minimum criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating38.8 US tons

Inventory rating23.3 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans3

Design loadH 20

Structure length38 ft (11.6 m)

Longest span12 ft (3.7 m)

Deck width43 ft (13.1 m)

Roadway width36 ft (11.1 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic678 (2022)

Projected traffic678 by 2044

Trucks17%

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 proposedReplacement because of substandard load-carrying capacity or roadway geometry

Estimated improvement cost$404,000 (2024 estimate)

NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Gizzard Creek built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1969.

What condition is FM over Gizzard Creek 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 March 2024.

How much traffic does FM over Gizzard Creek carry?

About 678 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is FM over Gizzard Creek?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m) and a deck 43 ft wide.

Who owns FM over Gizzard Creek?

It is owned by the County Highway Agency.