FM over Dd Jt 22

Fair

Palo Alto County, Iowa · 094342001 · Structure no. 000000000268991

Built: 1975; 50 years old
Condition: Fair; inspected May 2023
Type: Slab; Concrete Continuous
Length: 80 ft; 3 main spans
Daily traffic: 350; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Dd Jt 22 is a concrete continuous slab carrying FM over Dd Jt 22 in Palo Alto County, Iowa. It was built in 1975, so it is 50 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 350 vehicles a day, roughly 30% of them trucks, projected to reach 350 by 2043. The structure is 80 ft (24.4 m) long and 31 ft wide.

Location

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CarriesFM

CrossesDd Jt 22

Location094342001

RouteCounty Highway 0

CountyPalo Alto County

StateIowa

Coordinates42.95339, -94.8887

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

Last inspectionMay 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation6: Equal to present minimum criteria

Deck geometry6: Equal to present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating57.8 US tons

Inventory rating36.4 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadH 20

Structure length80 ft (24.4 m)

Longest span29 ft (8.8 m)

Deck width31 ft (9.4 m)

Roadway width30 ft (9.1 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2022)

Projected traffic350 by 2043

Trucks30%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed—

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 Dd Jt 22 built?

It was built in 1975, making it 50 years old in 2025.

What condition is FM over Dd Jt 22 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 May 2023.

How much traffic does FM over Dd Jt 22 carry?

About 350 vehicles per day (2022 count), of which roughly 30% are trucks.

How long is FM over Dd Jt 22?

The structure is 80 ft (24.4 m) long with a longest span of 29 ft (8.8 m) and a deck 31 ft wide.

Who owns FM over Dd Jt 22?

It is owned by the County Highway Agency.