US Bridges

Dubuque Rd(eb) over Blowers Creek

Good

Black Hawk County, Iowa · City Bridge No. 23 · Structure no. 000000000014631

Built
1991
34 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
214 ft
3 main spans
Daily traffic
4,208
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Dubuque Rd(eb) over Blowers Creek is a prestressed concrete stringer/multi-beam or girder carrying Dubuque Rd(eb) over Blowers Creek in Black Hawk County, Iowa. It was built in 1991, so it is 34 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 4,208 vehicles a day, projected to reach 4,208 by 2043. The structure is 214 ft (65.2 m) long and 43 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesDubuque Rd(eb)
CrossesBlowers Creek
LocationCity Bridge No. 23
RouteCity Street 0
CountyBlack Hawk County
StateIowa
Coordinates42.48971, -92.30577
Functional classUrban Other Principal Arterial

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 evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.1 US tons
Inventory rating30.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length214 ft (65.2 m)
Longest span82 ft (25 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,208 (2022)
Projected traffic4,208 by 2043
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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(eb) over Blowers Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Dubuque Rd(eb) over Blowers 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 Dubuque Rd(eb) over Blowers Creek carry?

About 4,208 vehicles per day (2022 count).

How long is Dubuque Rd(eb) over Blowers Creek?

The structure is 214 ft (65.2 m) long with a longest span of 82 ft (25 m) and a deck 43 ft wide.

Who owns Dubuque Rd(eb) over Blowers Creek?

It is owned by the City or Municipal Highway Agency.