US Bridges

Olive over Drainage Ditch

Poor

Worth County, Iowa · 098202804 · Structure no. 000000000355700

Built
1974
51 years old
Condition
Poor
inspected December 2023
Type
Channel Beam
Concrete
Length
63 ft
2 main spans
Daily traffic
51
2022 count
Owner
County
County Highway Agency

About this bridge

Olive over Drainage Ditch is a concrete channel beam carrying Olive over Drainage Ditch in Worth County, Iowa. It was built in 1974, so it is 51 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 51 vehicles a day, projected to reach 51 by 2043. The structure is 63 ft (19.2 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesOlive
CrossesDrainage Ditch
Location098202804
RouteCounty Highway 0
CountyWorth County
StateIowa
Coordinates43.26981, -93.22093
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53 US tons
Inventory rating33 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length63 ft (19.2 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2022)
Projected traffic51 by 2043
Trucks0%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Olive over Drainage Ditch built?

It was built in 1974, making it 51 years old in 2025.

What condition is Olive over Drainage Ditch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2023.

How much traffic does Olive over Drainage Ditch carry?

About 51 vehicles per day (2022 count).

How long is Olive over Drainage Ditch?

The structure is 63 ft (19.2 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns Olive over Drainage Ditch?

It is owned by the County Highway Agency.