US Bridges

Ia 57 over Drainage Ditch

Fair

Grundy County, Iowa · 0.3 Mi. W of E JCT SR T55 · Structure no. 000000000025800

Built
1900
125 years old, rebuilt 1928
Condition
Fair
inspected August 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
1,800
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 Grundy County, Iowa. It was built in 1900 and reconstructed in 1928, so it is 125 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 1,800 vehicles a day, roughly 9% of them trucks, projected to reach 1,800 by 2043. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIa 57
CrossesDrainage Ditch
Location0.3 Mi. W of E JCT SR T55
RouteState Highway 57
CountyGrundy County
StateIowa
Coordinates42.54252, -92.62091
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.7 US tons
Inventory rating15.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2023)
Projected traffic1,800 by 2043
Trucks9%
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 1900, making it 125 years old in 2025. It was reconstructed in 1928.

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 August 2024.

How much traffic does Ia 57 over Drainage Ditch carry?

About 1,800 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Ia 57 over Drainage Ditch?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns Ia 57 over Drainage Ditch?

It is owned by the State Highway Agency.