US Bridges

Steger RD over N Br Maquoketa River

Fair

Dubuque County, Iowa · 087021803 · Structure no. 000000000146148

Built
2017
8 years old
Condition
Fair
inspected March 2023
Type
Culvert
Steel
Length
21 ft
2 main spans
Daily traffic
26
2021 count
Owner
County
County Highway Agency

About this bridge

Steger RD over N Br Maquoketa River is a steel culvert carrying Steger RD over N Br Maquoketa River in Dubuque County, Iowa. It was built in 2017, so it is 8 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 26 vehicles a day, projected to reach 26 by 2043. The structure is 21 ft (6.4 m) long and 24 ft wide.

Location

Open in Google Maps
CarriesSteger RD
CrossesN Br Maquoketa River
Location087021803
RouteCounty Highway 0
CountyDubuque County
StateIowa
Coordinates42.34643, -91.12674
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadOther
Structure length21 ft (6.4 m)
Longest span9 ft (2.7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2021)
Projected traffic26 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 Steger RD over N Br Maquoketa River built?

It was built in 2017, making it 8 years old in 2025.

What condition is Steger RD over N Br Maquoketa River 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 March 2023.

How much traffic does Steger RD over N Br Maquoketa River carry?

About 26 vehicles per day (2021 count).

How long is Steger RD over N Br Maquoketa River?

The structure is 21 ft (6.4 m) long with a longest span of 9 ft (2.7 m) and a deck 24 ft wide.

Who owns Steger RD over N Br Maquoketa River?

It is owned by the County Highway Agency.