440th Ave over Stream

Fair

Palo Alto County, Iowa · 096332302 · Structure no. 000000000269915

Built: 1972; 53 years old
Condition: Fair; inspected April 2023
Type: Slab; Concrete
Length: 33 ft; 1 main span
Daily traffic: 82; 2021 count
Owner: County; County Highway Agency

About this bridge

440th Ave over Stream is a concrete slab carrying 440th Ave over Stream in Palo Alto 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 5 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 82 vehicles a day, projected to reach 82 by 2043. The structure is 33 ft (10.1 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries440th Ave

CrossesStream

Location096332302

RouteCounty Highway 0

CountyPalo Alto County

StateIowa

Coordinates43.11207, -94.71854

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

Last inspectionApril 2023

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 adequacy7: Better than present minimum criteria

Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is

Operating rating45.5 US tons

Inventory rating34 US tons

Structure

Structure typeSlab

MaterialConcrete

DeckConcrete, cast-in-place

Main spans1

Design loadH 20

Structure length33 ft (10.1 m)

Longest span30 ft (9.1 m)

Deck width30 ft (9.1 m)

Roadway width28 ft (8.5 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic82 (2021)

Projected traffic82 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—

NavigationNo navigation control on waterway

Frequently asked questions

When was 440th Ave over Stream built?

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

What condition is 440th Ave over Stream 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 April 2023.

How much traffic does 440th Ave over Stream carry?

About 82 vehicles per day (2021 count).

How long is 440th Ave over Stream?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns 440th Ave over Stream?

It is owned by the County Highway Agency.