US Bridges

Dubuque RD over Spring Creek

Fair

Black Hawk County, Iowa · 88-11-02-01-10 · Structure no. 000000000014690

Built
1956
69 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
2,484
2022 count
Owner
County
County Highway Agency

About this bridge

Dubuque RD over Spring Creek is a concrete continuous culvert carrying Dubuque RD over Spring Creek in Black Hawk 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 2,484 vehicles a day, roughly 11% of them trucks, projected to reach 2,484 by 2043. The structure is 38 ft (11.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDubuque RD
CrossesSpring Creek
Location88-11-02-01-10
RouteCounty Highway 0
CountyBlack Hawk County
StateIowa
Coordinates42.46819, -92.0893
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 inspectionDecember 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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 20
Structure length38 ft (11.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,484 (2022)
Projected traffic2,484 by 2043
Trucks11%
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 Dubuque RD over Spring Creek built?

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

What condition is Dubuque RD over Spring 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 December 2023.

How much traffic does Dubuque RD over Spring Creek carry?

About 2,484 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Dubuque RD over Spring Creek?

The structure is 38 ft (11.5 m) long with a longest span of 12 ft (3.7 m).

Who owns Dubuque RD over Spring Creek?

It is owned by the County Highway Agency.