US Bridges

Ia 22 over Drainage Ditch

Fair

Muscatine County, Iowa · 3.5 Mi. E of Jct. Ia 38 · Structure no. 000000000038041

Built
1978
47 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
1,730
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 22 over Drainage Ditch is a concrete continuous culvert carrying Ia 22 over Drainage Ditch in Muscatine County, Iowa. It was built in 1978, so it is 47 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 1,730 vehicles a day, roughly 16% of them trucks, projected to reach 1,730 by 2042. The structure is 22 ft (6.7 m) long and 47 ft wide. If it were closed, the detour would be 36 mi (58 km).

Location

Open in Google Maps
CarriesIa 22
CrossesDrainage Ditch
Location3.5 Mi. E of Jct. Ia 38
RouteState Highway 22
CountyMuscatine County
StateIowa
Coordinates41.442, -90.96706
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.7 US tons
Inventory rating28 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,730 (2022)
Projected traffic1,730 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed36 mi (58 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 22 over Drainage Ditch built?

It was built in 1978, making it 47 years old in 2025.

What condition is Ia 22 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 March 2023.

How much traffic does Ia 22 over Drainage Ditch carry?

About 1,730 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is Ia 22 over Drainage Ditch?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 47 ft wide.

Who owns Ia 22 over Drainage Ditch?

It is owned by the State Highway Agency.