US Bridges

US 59 over Drainage Ditch

Fair

Osceola County, Iowa · 1.1 MI N of JCT SR A46 · Structure no. 000000000038401

Built
1976
49 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete Continuous
Length
33 ft
3 main spans
Daily traffic
1,180
2023 count
Owner
State
State Highway Agency

About this bridge

US 59 over Drainage Ditch is a concrete continuous culvert carrying US 59 over Drainage Ditch in Osceola County, Iowa. It was built in 1976, so it is 49 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 1,180 vehicles a day, roughly 29% of them trucks, projected to reach 1,180 by 2043. The structure is 33 ft (10.1 m) long and 46 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUS 59
CrossesDrainage Ditch
Location1.1 MI N of JCT SR A46
RouteU.S. Route 59
StateIowa
Coordinates43.31879, -95.64354
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 protection7 GoodSome minor problems.
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
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.1 US tons
Inventory rating28.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,180 (2023)
Projected traffic1,180 by 2043
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 US 59 over Drainage Ditch built?

It was built in 1976, making it 49 years old in 2025.

What condition is US 59 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 US 59 over Drainage Ditch carry?

About 1,180 vehicles per day (2023 count), of which roughly 29% are trucks.

How long is US 59 over Drainage Ditch?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m) and a deck 46 ft wide.

Who owns US 59 over Drainage Ditch?

It is owned by the State Highway Agency.