US Bridges

US 59 & Ia 10 over Willow Creek

Fair

O'Brien County, Iowa · 0.2 Mi. N of S Jct. Ia 10 · Structure no. 000000000038260

Built
1971
54 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
1,460
2023 count
Owner
State
State Highway Agency

About this bridge

US 59 & Ia 10 over Willow Creek is a concrete continuous culvert carrying US 59 & Ia 10 over Willow Creek in O'Brien County, Iowa. It was built in 1971, so it is 54 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 1,460 vehicles a day, roughly 31% of them trucks, projected to reach 1,460 by 2043. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesUS 59 & Ia 10
CrossesWillow Creek
Location0.2 Mi. N of S Jct. Ia 10
RouteU.S. Route 59
CountyO'Brien County
StateIowa
Coordinates42.96813, -95.54929
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating30.2 US tons
Inventory rating18.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,460 (2023)
Projected traffic1,460 by 2043
Trucks31%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 59 & Ia 10 over Willow Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is US 59 & Ia 10 over Willow Creek 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 September 2023.

How much traffic does US 59 & Ia 10 over Willow Creek carry?

About 1,460 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is US 59 & Ia 10 over Willow Creek?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m).

Who owns US 59 & Ia 10 over Willow Creek?

It is owned by the State Highway Agency.