US Bridges

Ia 83 over Drainage Ditch

Fair

Pottawattamie County, Iowa · 1.3 Mi. E of E JCT SR M47 · Structure no. 000000000043750

Built
1936
89 years old, rebuilt 1986
Condition
Fair
inspected May 2023
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
770
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 83 over Drainage Ditch is a concrete continuous culvert carrying Ia 83 over Drainage Ditch in Pottawattamie County, Iowa. It was built in 1936 and reconstructed in 1986, so it is 89 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 770 vehicles a day, roughly 13% of them trucks, projected to reach 770 by 2042. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesIa 83
CrossesDrainage Ditch
Location1.3 Mi. E of E JCT SR M47
RouteState Highway 83
CountyPottawattamie County
StateIowa
Coordinates41.44721, -95.1954
Functional classRural Major Collector

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating20.3 US tons
Inventory rating15 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic770 (2022)
Projected traffic770 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 83 over Drainage Ditch built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1986.

What condition is Ia 83 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 May 2023.

How much traffic does Ia 83 over Drainage Ditch carry?

About 770 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is Ia 83 over Drainage Ditch?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m).

Who owns Ia 83 over Drainage Ditch?

It is owned by the State Highway Agency.