US Bridges

Ia 64 over Drainage Ditch

Fair

Jackson County, Iowa · 4.4 Mi. E of Jct. SR Y34 · Structure no. 000000000030291

Built
1981
44 years old
Condition
Fair
inspected January 2023
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
2,200
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 64 over Drainage Ditch is a concrete continuous culvert carrying Ia 64 over Drainage Ditch in Jackson County, Iowa. It was built in 1981, so it is 44 years old, younger 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 2,200 vehicles a day, roughly 12% of them trucks, projected to reach 2,200 by 2042. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesIa 64
CrossesDrainage Ditch
Location4.4 Mi. E of Jct. SR Y34
RouteState Highway 64
CountyJackson County
StateIowa
Coordinates42.06247, -90.75934
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 inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 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 traffic2,200 (2022)
Projected traffic2,200 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 64 over Drainage Ditch built?

It was built in 1981, making it 44 years old in 2025.

What condition is Ia 64 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 January 2023.

How much traffic does Ia 64 over Drainage Ditch carry?

About 2,200 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Ia 64 over Drainage Ditch?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Ia 64 over Drainage Ditch?

It is owned by the State Highway Agency.