US Bridges

CO RD 105 over Drainage Ditch

Fair

Worth County, Iowa · 100193103 · Structure no. 000000000054190

Built
1956
69 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
87 ft
3 main spans
Daily traffic
894
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.

It carries about 894 vehicles a day, projected to reach 894 by 2043. The structure is 87 ft (26.5 m) long and 35 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesCO RD 105
CrossesDrainage Ditch
Location100193103
RouteCounty Highway 0
CountyWorth County
StateIowa
Coordinates43.44086, -93.12959
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.8 US tons
Inventory rating34.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length87 ft (26.5 m)
Longest span32 ft (9.8 m)
Deck width35 ft (10.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic894 (2022)
Projected traffic894 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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$394,000
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 894 vehicles per day (2022 count).

How long is CO RD 105 over Drainage Ditch?

The structure is 87 ft (26.5 m) long with a longest span of 32 ft (9.8 m) and a deck 35 ft wide.

Who owns CO RD 105 over Drainage Ditch?

It is owned by the County Highway Agency.