US Bridges

E Dunkerton RD over Virden Creek

Fair

Black Hawk County, Iowa · 90-12-31-01-10 · Structure no. 000000000076400

Built
1969
56 years old
Condition
Fair
inspected November 2022
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
2,259
2022 count
Owner
County
County Highway Agency

About this bridge

E Dunkerton RD over Virden Creek is a concrete continuous culvert carrying E Dunkerton RD over Virden Creek in Black Hawk County, Iowa. It was built in 1969, so it is 56 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 2,259 vehicles a day, roughly 22% of them trucks, projected to reach 2,259 by 2043. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesE Dunkerton RD
CrossesVirden Creek
Location90-12-31-01-10
RouteCounty Highway 0
CountyBlack Hawk County
StateIowa
Coordinates42.57043, -92.31028
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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2022
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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,259 (2022)
Projected traffic2,259 by 2043
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was E Dunkerton RD over Virden Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is E Dunkerton RD over Virden Creek 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 2022.

How much traffic does E Dunkerton RD over Virden Creek carry?

About 2,259 vehicles per day (2022 count), of which roughly 22% are trucks.

How long is E Dunkerton RD over Virden Creek?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns E Dunkerton RD over Virden Creek?

It is owned by the County Highway Agency.