Local over Dd #40

Fair

Emmet County, Iowa · 099320601 · Structure no. 000000000148661

Built: 1973; 52 years old
Condition: Fair; inspected August 2023
Type: Slab; Concrete Continuous
Length: 78 ft; 3 main spans
Daily traffic: 10; 2022 count
Owner: County; County Highway Agency

About this bridge

Local over Dd #40 is a concrete continuous slab carrying Local over Dd #40 in Emmet County, Iowa. It was built in 1973, so it is 52 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 10 vehicles a day, projected to reach 10 by 2043. The structure is 78 ft (23.8 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesLocal

CrossesDd #40

Location099320601

RouteCounty Highway 0

CountyEmmet County

StateIowa

Coordinates43.43051, -94.67252

Functional classRural Local

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	7 Good	Some minor problems.

Last inspectionAugust 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 adequacy7: Better than present minimum criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating45.3 US tons

Inventory rating27.2 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadH 15

Structure length78 ft (23.8 m)

Longest span29 ft (8.8 m)

Deck width26 ft (8 m)

Roadway width24 ft (7.3 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)

Projected traffic10 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 proposedOther structural work, including hydraulic replacements

Estimated improvement cost$60,000 (2023 estimate)

NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Dd #40 built?

It was built in 1973, making it 52 years old in 2025.

What condition is Local over Dd #40 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 August 2023.

How much traffic does Local over Dd #40 carry?

About 10 vehicles per day (2022 count).

How long is Local over Dd #40?

The structure is 78 ft (23.8 m) long with a longest span of 29 ft (8.8 m) and a deck 26 ft wide.

Who owns Local over Dd #40?

It is owned by the County Highway Agency.