Local over Prairie Creek 319

Good

Calhoun County, Iowa · 086341102 · Structure no. 000000000090731

Built: 2007; 18 years old
Condition: Good; inspected July 2024
Type: Slab; Concrete Continuous
Length: 72 ft; 3 main spans
Daily traffic: 34; 2022 count
Owner: County; County Highway Agency

About this bridge

Local over Prairie Creek 319 is a concrete continuous slab carrying Local over Prairie Creek 319 in Calhoun County, Iowa. It was built in 2007, so it is 18 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 8 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 2044. The structure is 72 ft (21.9 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesLocal

CrossesPrairie Creek 319

Location086341102

RouteCounty Highway 0

CountyCalhoun County

StateIowa

Coordinates42.27689, -94.78401

Functional classRural Local

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	8 Very Good	No problems noted.
Superstructure	8 Very Good	No problems noted.
Substructure	8 Very Good	No problems noted.
Channel and channel protection	7 Good	Some minor problems.

Last inspectionJuly 2024

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation8: Equal to present desirable criteria

Deck geometry7: Better than present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating76.8 US tons

Inventory rating46.1 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHL 93

Structure length72 ft (21.9 m)

Longest span28 ft (8.5 m)

Deck width31 ft (9.3 m)

Roadway width31 ft (9.3 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34 (2022)

Projected traffic34 by 2044

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 statusPossibly eligible for the National Register; requires further investigation

Work proposedOther structural work, including hydraulic replacements

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Prairie Creek 319 built?

It was built in 2007, making it 18 years old in 2025.

What condition is Local over Prairie Creek 319 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 July 2024.

How much traffic does Local over Prairie Creek 319 carry?

About 34 vehicles per day (2022 count).

How long is Local over Prairie Creek 319?

The structure is 72 ft (21.9 m) long with a longest span of 28 ft (8.5 m) and a deck 31 ft wide.

Who owns Local over Prairie Creek 319?

It is owned by the County Highway Agency.