US Bridges

University Ave over Green Hill RD

Fair

Black Hawk County, Iowa · City Bridge No. 60 · Structure no. 000000000605910

Built
1989
36 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
205 ft
3 main spans
Daily traffic
10,933
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

University Ave over Green Hill RD is a prestressed concrete stringer/multi-beam or girder carrying University Ave over Green Hill RD in Black Hawk County, Iowa. It was built in 1989, so it is 36 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 10,933 vehicles a day, roughly 1% of them trucks, projected to reach 10,933 by 2043. The structure is 205 ft (62.5 m) long and 100 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUniversity Ave
CrossesGreen Hill RD
LocationCity Bridge No. 60
RouteCity Street 0
CountyBlack Hawk County
StateIowa
Coordinates42.50293, -92.39416
Functional classUrban Other Principal 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.8 US tons
Inventory rating28.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length205 ft (62.5 m)
Longest span104 ft (31.7 m)
Deck width100 ft (30.5 m)
Roadway width79 ft (24.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,933 (2023)
Projected traffic10,933 by 2043
Trucks1%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was University Ave over Green Hill RD built?

It was built in 1989, making it 36 years old in 2025.

What condition is University Ave over Green Hill RD 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 University Ave over Green Hill RD carry?

About 10,933 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is University Ave over Green Hill RD?

The structure is 205 ft (62.5 m) long with a longest span of 104 ft (31.7 m) and a deck 100 ft wide.

Who owns University Ave over Green Hill RD?

It is owned by the City or Municipal Highway Agency.