US Bridges

Ia 57 over Drainage Ditch

Fair

Butler County, Iowa · 3.7 Mi. W of SR T-55 · Structure no. 000000000016460

Built
1929
96 years old, rebuilt 1982
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
2,260
2023 count
Owner
State
State Highway Agency

About this bridge

Ia 57 over Drainage Ditch is a concrete slab carrying Ia 57 over Drainage Ditch in Butler County, Iowa. It was built in 1929 and reconstructed in 1982, so it is 96 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 26 ft (7.9 m) long and 50 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIa 57
CrossesDrainage Ditch
Location3.7 Mi. W of SR T-55
RouteState Highway 57
CountyButler County
StateIowa
Coordinates42.56512, -92.65248
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
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 geometry9: Superior to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.3 US tons
Inventory rating52.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width50 ft (15.2 m)
Roadway width47 ft (14.4 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 closed1.9 mi (3 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 1929, making it 96 years old in 2025. It was reconstructed in 1982.

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 April 2023.

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 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 50 ft wide.

Who owns Ia 57 over Drainage Ditch?

It is owned by the State Highway Agency.