Local over Willow Creek

Good

Guthrie County, Iowa · 081320506 · Structure no. 000000000170051

Built: 1999; 26 years old
Condition: Good; inspected November 2023
Type: Slab; Concrete Continuous
Length: 116 ft; 3 main spans
Daily traffic: 15; 2022 count
Owner: County; County Highway Agency

About this bridge

Local over Willow Creek is a concrete continuous slab carrying Local over Willow Creek in Guthrie County, Iowa. It was built in 1999, so it is 26 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 15 vehicles a day, roughly 20% of them trucks, projected to reach 15 by 2043. The structure is 116 ft (35.4 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesLocal

CrossesWillow Creek

Location081320506

RouteCounty Highway 0

CountyGuthrie County

StateIowa

Coordinates41.85287, -94.59995

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

Last inspectionNovember 2023

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 rating91.9 US tons

Inventory rating55.1 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length116 ft (35.4 m)

Longest span44 ft (13.4 m)

Deck width33 ft (10.1 m)

Roadway width31 ft (9.3 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2022)

Projected traffic15 by 2043

Trucks20%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed5 mi (8 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$30,000 (2024 estimate)

NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Willow Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Local over Willow Creek 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 November 2023.

How much traffic does Local over Willow Creek carry?

About 15 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is Local over Willow Creek?

The structure is 116 ft (35.4 m) long with a longest span of 44 ft (13.4 m) and a deck 33 ft wide.

Who owns Local over Willow Creek?

It is owned by the County Highway Agency.