US Bridges

FM over Middle Willow Creek

Good

Crawford County, Iowa · 083412704 · Structure no. 000000000128360

Built
1967
58 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
358
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Middle Willow Creek is a concrete continuous culvert carrying FM over Middle Willow Creek in Crawford County, Iowa. It was built in 1967, so it is 58 years old, older 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 358 vehicles a day, roughly 23% of them trucks, projected to reach 358 by 2043. The structure is 21 ft (6.4 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFM
CrossesMiddle Willow Creek
Location083412704
RouteCounty Highway 0
StateIowa
Coordinates41.97851, -95.61409
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating110.1 US tons
Inventory rating74.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width36 ft (11 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic358 (2022)
Projected traffic358 by 2043
Trucks23%
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 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 FM over Middle Willow Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is FM over Middle 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 March 2023.

How much traffic does FM over Middle Willow Creek carry?

About 358 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is FM over Middle Willow Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 36 ft wide.

Who owns FM over Middle Willow Creek?

It is owned by the County Highway Agency.