US Bridges

Ia 57 over Drainage Ditch

Fair

Butler County, Iowa · 4.8 Mi. E of Jct. Ia 14 · Structure no. 000000000016450

Built
1971
54 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
63 ft
2 main spans
Daily traffic
2,260
2023 count
Owner
State
State Highway Agency

About this bridge

Ia 57 over Drainage Ditch is a concrete continuous slab carrying Ia 57 over Drainage Ditch in Butler 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 2,260 vehicles a day, roughly 7% of them trucks, projected to reach 2,260 by 2043. The structure is 63 ft (19.2 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesIa 57
CrossesDrainage Ditch
Location4.8 Mi. E of Jct. Ia 14
RouteState Highway 57
CountyButler County
StateIowa
Coordinates42.56574, -92.67763
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.2 US tons
Inventory rating39.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span30 ft (9.1 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,260 (2023)
Projected traffic2,260 by 2043
Trucks7%
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

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 1971, making it 54 years old in 2025.

What condition is Ia 57 over Drainage Ditch 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 July 2024.

How much traffic does Ia 57 over Drainage Ditch carry?

About 2,260 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Ia 57 over Drainage Ditch?

The structure is 63 ft (19.2 m) long with a longest span of 30 ft (9.1 m) and a deck 47 ft wide.

Who owns Ia 57 over Drainage Ditch?

It is owned by the State Highway Agency.