US Bridges

Conrad Lane over Whitewater Creek

Fair

Dubuque County, Iowa · 088012603 · Structure no. 000000000146776

Built
2022
3 years old
Condition
Fair
inspected December 2022
Type
Other
Steel
Length
70 ft
1 main span
Daily traffic
11
2022 count
Owner
County
County Highway Agency

About this bridge

Conrad Lane over Whitewater Creek is a steel other carrying Conrad Lane over Whitewater Creek in Dubuque County, Iowa. It was built in 2022, so it is 3 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 11 vehicles a day, projected to reach 11 by 2043. The structure is 70 ft (21.3 m) long and 20 ft wide.

Location

Open in Google Maps
CarriesConrad Lane
CrossesWhitewater Creek
Location088012603
RouteCounty Highway 0
CountyDubuque County
StateIowa
Coordinates42.40041, -90.93033
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeOther
MaterialSteel
DeckSteel plate
Main spans1
Design loadUnknown
Structure length70 ft (21.3 m)
Longest span66 ft (20.1 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2022)
Projected traffic11 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Conrad Lane over Whitewater Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is Conrad Lane over Whitewater 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 2022.

How much traffic does Conrad Lane over Whitewater Creek carry?

About 11 vehicles per day (2022 count).

How long is Conrad Lane over Whitewater Creek?

The structure is 70 ft (21.3 m) long with a longest span of 66 ft (20.1 m) and a deck 20 ft wide.

Who owns Conrad Lane over Whitewater Creek?

It is owned by the County Highway Agency.