FM over Dd 63

Good

Palo Alto County, Iowa · 094330801 · Structure no. 000000000268871

Built: 1995; 30 years old
Condition: Good; inspected May 2022
Type: Slab; Concrete Continuous
Length: 80 ft; 3 main spans
Daily traffic: 34; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Dd 63 is a concrete continuous slab carrying FM over Dd 63 in Palo Alto County, Iowa. It was built in 1995, so it is 30 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 34 vehicles a day, projected to reach 34 by 2043. The structure is 80 ft (24.4 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesFM

CrossesDd 63

Location094330801

RouteCounty Highway 0

CountyPalo Alto County

StateIowa

Coordinates42.9814, -94.76965

Functional classRural Minor Collector

Condition and inspection

Good

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

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	7 Good	Some minor problems.
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionMay 2022

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation7: Better than present minimum criteria

Deck geometry7: Better than present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating84.1 US tons

Inventory rating50.4 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length80 ft (24.4 m)

Longest span29 ft (8.8 m)

Deck width31 ft (9.3 m)

Roadway width30 ft (9.1 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34 (2022)

Projected traffic34 by 2043

Trucks0%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed1.9 mi (3 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 Dd 63 built?

It was built in 1995, making it 30 years old in 2025.

What condition is FM over Dd 63 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 May 2022.

How much traffic does FM over Dd 63 carry?

About 34 vehicles per day (2022 count).

How long is FM over Dd 63?

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 63?

It is owned by the County Highway Agency.