US Bridges

Oakcresthill RD over Drainage Ditch

Fair

Johnson County, Iowa · 078061502 · Structure no. 000000000031631

Built
2003
22 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
36 ft
3 main spans
Daily traffic
1,670
2021 count
Owner
County
County Highway Agency

About this bridge

Oakcresthill RD over Drainage Ditch is a concrete continuous culvert carrying Oakcresthill RD over Drainage Ditch in Johnson County, Iowa. It was built in 2003, so it is 22 years old, younger 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 1,670 vehicles a day, roughly 9% of them trucks, projected to reach 1,670 by 2043. The structure is 36 ft (11 m) long and 30 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesOakcresthill RD
CrossesDrainage Ditch
Location078061502
RouteCounty Highway 0
CountyJohnson County
StateIowa
Coordinates41.56313, -91.54152
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 inspectionApril 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.3 US tons
Inventory rating24.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadOther
Structure length36 ft (11 m)
Longest span12 ft (3.7 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,670 (2021)
Projected traffic1,670 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Oakcresthill RD over Drainage Ditch built?

It was built in 2003, making it 22 years old in 2025.

What condition is Oakcresthill RD 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 April 2023.

How much traffic does Oakcresthill RD over Drainage Ditch carry?

About 1,670 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Oakcresthill RD over Drainage Ditch?

The structure is 36 ft (11 m) long with a longest span of 12 ft (3.7 m) and a deck 30 ft wide.

Who owns Oakcresthill RD over Drainage Ditch?

It is owned by the County Highway Agency.