US Bridges

5th ST over Cedar River

Fair

Black Hawk County, Iowa · City Bridge No. 8 · Structure no. 000000000011832

Built
1967
58 years old
Condition
Fair
inspected June 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
630 ft
6 main spans
Daily traffic
7,280
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

5th ST over Cedar River is a steel continuous girder and floorbeam system carrying 5th ST over Cedar River in Black Hawk County, Iowa. It was built in 1967, so it is 58 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 5 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 7,280 vehicles a day, projected to reach 7,280 by 2043. The structure is 630 ft (192 m) long and 64 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries5th ST
CrossesCedar River
LocationCity Bridge No. 8
RouteCity Street 0
CountyBlack Hawk County
StateIowa
Coordinates42.49652, -92.33616
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.5 US tons
Inventory rating41.1 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length630 ft (192 m)
Longest span139 ft (42.4 m)
Deck width64 ft (19.5 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,280 (2022)
Projected traffic7,280 by 2043
Trucks0%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 5th ST over Cedar River built?

It was built in 1967, making it 58 years old in 2025.

What condition is 5th ST over Cedar 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 June 2023.

How much traffic does 5th ST over Cedar River carry?

About 7,280 vehicles per day (2022 count).

How long is 5th ST over Cedar River?

The structure is 630 ft (192 m) long with a longest span of 139 ft (42.4 m) and a deck 64 ft wide.

Who owns 5th ST over Cedar River?

It is owned by the City or Municipal Highway Agency.