US Bridges

W Ridgeway Ave over Black Hawk Creek

Fair

Black Hawk County, Iowa · City Bridge No. 2 · Structure no. 000000000011791

Built
1979
46 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
355 ft
4 main spans
Daily traffic
4,164
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

W Ridgeway Ave over Black Hawk Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying W Ridgeway Ave over Black Hawk Creek in Black Hawk County, Iowa. It was built in 1979, so it is 46 years old, older 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 4,164 vehicles a day, projected to reach 4,164 by 2043. The structure is 355 ft (108.2 m) long and 70 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesW Ridgeway Ave
CrossesBlack Hawk Creek
LocationCity Bridge No. 2
RouteCity Street 0
CountyBlack Hawk County
StateIowa
Coordinates42.46965, -92.41432
Functional classUrban Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating34.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length355 ft (108.2 m)
Longest span97 ft (29.6 m)
Deck width70 ft (21.3 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,164 (2022)
Projected traffic4,164 by 2043
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W Ridgeway Ave over Black Hawk Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is W Ridgeway Ave over Black Hawk 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 June 2023.

How much traffic does W Ridgeway Ave over Black Hawk Creek carry?

About 4,164 vehicles per day (2022 count).

How long is W Ridgeway Ave over Black Hawk Creek?

The structure is 355 ft (108.2 m) long with a longest span of 97 ft (29.6 m) and a deck 70 ft wide.

Who owns W Ridgeway Ave over Black Hawk Creek?

It is owned by the City or Municipal Highway Agency.