FM over Dd 67

Fair

Calhoun County, Iowa · 088331901 · Structure no. 000000000092131

Built: 1972; 53 years old
Condition: Fair; inspected July 2021
Type: Slab; Concrete Continuous
Length: 79 ft; 3 main spans
Daily traffic: 5; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Dd 67 is a concrete continuous slab carrying FM over Dd 67 in Calhoun County, Iowa. It was built in 1972, so it is 53 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 5 vehicles a day, projected to reach 5 by 2043. The structure is 79 ft (24.1 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesFM

CrossesDd 67

Location088331901

RouteCounty Highway 0

CountyCalhoun County

StateIowa

Coordinates42.42787, -94.73758

Functional classRural Minor 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	7 Good	Some minor problems.
Channel and channel protection	7 Good	Some minor problems.

Last inspectionJuly 2021

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation6: Equal to present minimum criteria

Deck geometry7: Better than present minimum criteria

Waterway adequacy6: Equal to present minimum 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 length79 ft (24.1 m)

Longest span29 ft (8.8 m)

Deck width32 ft (9.8 m)

Roadway width30 ft (9.1 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2022)

Projected traffic5 by 2043

Trucks0%

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 proposedOther structural work, including hydraulic replacements

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Dd 67 built?

It was built in 1972, making it 53 years old in 2025.

What condition is FM over Dd 67 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 July 2021.

How much traffic does FM over Dd 67 carry?

About 5 vehicles per day (2022 count).

How long is FM over Dd 67?

The structure is 79 ft (24.1 m) long with a longest span of 29 ft (8.8 m) and a deck 32 ft wide.

Who owns FM over Dd 67?

It is owned by the County Highway Agency.