US Bridges

Ia 92 over Drainage Ditch

Fair

Washington County, Iowa · 3.3 Mi. W of Jct. SR W38 · Structure no. 000000000051790

Built
1968
57 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete Continuous
Length
32 ft
2 main spans
Daily traffic
1,810
2023 count
Owner
State
State Highway Agency

About this bridge

Ia 92 over Drainage Ditch is a concrete continuous culvert carrying Ia 92 over Drainage Ditch in Washington County, Iowa. It was built in 1968, so it is 57 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 1,810 vehicles a day, roughly 19% of them trucks, projected to reach 1,810 by 2043. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesIa 92
CrossesDrainage Ditch
Location3.3 Mi. W of Jct. SR W38
RouteState Highway 92
CountyWashington County
StateIowa
Coordinates41.33694, -91.89285
Functional classRural Principal Arterial - Other

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 inspectionFebruary 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 alignment8: Equal to present desirable criteria
Operating rating92.3 US tons
Inventory rating55.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length32 ft (9.8 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 traffic1,810 (2023)
Projected traffic1,810 by 2043
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

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 92 over Drainage Ditch built?

It was built in 1968, making it 57 years old in 2025.

What condition is Ia 92 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 February 2023.

How much traffic does Ia 92 over Drainage Ditch carry?

About 1,810 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is Ia 92 over Drainage Ditch?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m).

Who owns Ia 92 over Drainage Ditch?

It is owned by the State Highway Agency.