US Bridges

N Cascade RD over South Fork Catfish Creek

Good

Dubuque County, Iowa · 88N02ES33NW · Structure no. 000000000147352

Built
2012
13 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete Continuous
Length
181 ft
4 main spans
Daily traffic
2,259
2022 count
Owner
County
County Highway Agency

About this bridge

N Cascade RD over South Fork Catfish Creek is a concrete continuous slab carrying N Cascade RD over South Fork Catfish Creek in Dubuque County, Iowa. It was built in 2012, so it is 13 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 2,259 vehicles a day, projected to reach 2,259 by 2043. The structure is 181 ft (55.2 m) long and 46 ft wide.

CarriesN Cascade RD
CrossesSouth Fork Catfish Creek
Location88N02ES33NW
RouteCounty Highway 0
StateIowa
Coordinates42.47231, -90.71085
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length181 ft (55.2 m)
Longest span51 ft (15.5 m)
Deck width46 ft (14 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,259 (2022)
Projected traffic2,259 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 N Cascade RD over South Fork Catfish Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is N Cascade RD over South Fork Catfish Creek 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 June 2023.

How much traffic does N Cascade RD over South Fork Catfish Creek carry?

About 2,259 vehicles per day (2022 count).

How long is N Cascade RD over South Fork Catfish Creek?

The structure is 181 ft (55.2 m) long with a longest span of 51 ft (15.5 m) and a deck 46 ft wide.

Who owns N Cascade RD over South Fork Catfish Creek?

It is owned by the County Highway Agency.