US Bridges

Dubuque RD over Trib to Indian Creek

Poor

Black Hawk County, Iowa · 88-11-06-03-10 · Structure no. 000000000014670

Built
1957
68 years old
Condition
Poor
inspected December 2023
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
1,532
2022 count
Owner
County
County Highway Agency

About this bridge

Dubuque RD over Trib to Indian Creek is a concrete continuous culvert carrying Dubuque RD over Trib to Indian Creek in Black Hawk County, Iowa. It was built in 1957, so it is 68 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,532 vehicles a day, roughly 10% of them trucks, projected to reach 1,532 by 2043. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDubuque RD
CrossesTrib to Indian Creek
Location88-11-06-03-10
RouteCounty Highway 0
CountyBlack Hawk County
StateIowa
Coordinates42.46856, -92.16544
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating43.5 US tons
Inventory rating26.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length25 ft (7.6 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 traffic1,532 (2022)
Projected traffic1,532 by 2043
Trucks10%
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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Dubuque RD over Trib to Indian Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is Dubuque RD over Trib to Indian Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2023.

How much traffic does Dubuque RD over Trib to Indian Creek carry?

About 1,532 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Dubuque RD over Trib to Indian Creek?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Dubuque RD over Trib to Indian Creek?

It is owned by the County Highway Agency.