US Bridges

W Dunkerton RD over Trib to Cedar River

Good

Black Hawk County, Iowa · 90-13-34-01-10 · Structure no. 000000000076701

Built
2015
10 years old
Condition
Good
inspected November 2021
Type
Slab
Concrete Continuous
Length
70 ft
3 main spans
Daily traffic
1,100
2022 count
Owner
County
County Highway Agency

About this bridge

W Dunkerton RD over Trib to Cedar River is a concrete continuous slab carrying W Dunkerton RD over Trib to Cedar River in Black Hawk County, Iowa. It was built in 2015, so it is 10 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,100 vehicles a day, roughly 7% of them trucks, projected to reach 1,100 by 2043. The structure is 70 ft (21.3 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesW Dunkerton RD
CrossesTrib to Cedar River
Location90-13-34-01-10
RouteCounty Highway 0
CountyBlack Hawk County
StateIowa
Coordinates42.57064, -92.36124
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
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 rating59 US tons
Inventory rating45.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length70 ft (21.3 m)
Longest span28 ft (8.5 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2022)
Projected traffic1,100 by 2043
Trucks7%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W Dunkerton RD over Trib to Cedar River built?

It was built in 2015, making it 10 years old in 2025.

What condition is W Dunkerton RD over Trib to Cedar River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2021.

How much traffic does W Dunkerton RD over Trib to Cedar River carry?

About 1,100 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is W Dunkerton RD over Trib to Cedar River?

The structure is 70 ft (21.3 m) long with a longest span of 28 ft (8.5 m) and a deck 33 ft wide.

Who owns W Dunkerton RD over Trib to Cedar River?

It is owned by the County Highway Agency.