US Bridges

CO RD 105 over Drainage Ditch

FairPosted for load

Worth County, Iowa · 099191203 · Structure no. 000000000054210

Built
1956
69 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
62 ft
2 main spans
Daily traffic
609
2022 count
Owner
County
County Highway Agency

About this bridge

CO RD 105 over Drainage Ditch is a concrete continuous slab carrying CO RD 105 over Drainage Ditch in Worth County, Iowa. It was built in 1956, so it is 69 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 609 vehicles a day, roughly 22% of them trucks, projected to reach 609 by 2043. The structure is 62 ft (18.9 m) long and 35 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesCO RD 105
CrossesDrainage Ditch
Location099191203
RouteCounty Highway 0
CountyWorth County
StateIowa
Coordinates43.41502, -93.0356
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.6 US tons
Inventory rating21.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length62 ft (18.9 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic609 (2022)
Projected traffic609 by 2043
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD 105 over Drainage Ditch built?

It was built in 1956, making it 69 years old in 2025.

What condition is CO RD 105 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 November 2023.

How much traffic does CO RD 105 over Drainage Ditch carry?

About 609 vehicles per day (2022 count), of which roughly 22% are trucks.

How long is CO RD 105 over Drainage Ditch?

The structure is 62 ft (18.9 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns CO RD 105 over Drainage Ditch?

It is owned by the County Highway Agency.