US Bridges

Ia 57 over Drainage Ditch

Good

Butler County, Iowa · 2.1 Mi. E. of Jct. Ia 14 · Structure no. 000000000016441

Built
2023
2 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete Continuous
Length
39 ft
3 main spans
Daily traffic
2,400
2023 count
Owner
State
State Highway Agency

About this bridge

Ia 57 over Drainage Ditch is a concrete continuous culvert carrying Ia 57 over Drainage Ditch in Butler County, Iowa. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,400 vehicles a day, roughly 7% of them trucks, projected to reach 2,400 by 2043. The structure is 39 ft (11.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIa 57
CrossesDrainage Ditch
Location2.1 Mi. E. of Jct. Ia 14
RouteState Highway 57
CountyButler County
StateIowa
Coordinates42.57041, -92.73337
Functional classRural Minor Arterial

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 protection9 ExcellentNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating39.2 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHL 93
Structure length39 ft (11.8 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 traffic2,400 (2023)
Projected traffic2,400 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Ia 57 over Drainage Ditch built?

It was built in 2023, making it 2 years old in 2025.

What condition is Ia 57 over Drainage Ditch 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 February 2024.

How much traffic does Ia 57 over Drainage Ditch carry?

About 2,400 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Ia 57 over Drainage Ditch?

The structure is 39 ft (11.8 m) long with a longest span of 12 ft (3.7 m).

Who owns Ia 57 over Drainage Ditch?

It is owned by the State Highway Agency.