US Bridges

State ST over Drainage

FairPosted for load

Black Hawk County, Iowa · 000000000 · Structure no. 000000000001180

Built
1962
63 years old
Condition
Fair
inspected March 2024
Type
Tee Beam
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
783
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

State ST over Drainage is a prestressed concrete tee beam carrying State ST over Drainage in Black Hawk County, Iowa. It was built in 1962, so it is 63 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. Its operating status is: posted for load restriction.

It carries about 783 vehicles a day, projected to reach 783 by 2044. The structure is 25 ft (7.6 m) long and 47 ft wide.

Location

Open in Google Maps
CarriesState ST
CrossesDrainage
Location000000000
RouteCity Street 0
CountyBlack Hawk County
StateIowa
Coordinates42.52341, -92.44422
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28 US tons
Inventory rating20 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span22 ft (6.7 m)
Deck width47 ft (14.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic783 (2022)
Projected traffic783 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was State ST over Drainage built?

It was built in 1962, making it 63 years old in 2025.

What condition is State ST over Drainage 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 March 2024.

How much traffic does State ST over Drainage carry?

About 783 vehicles per day (2022 count).

How long is State ST over Drainage?

The structure is 25 ft (7.6 m) long with a longest span of 22 ft (6.7 m) and a deck 47 ft wide.

Who owns State ST over Drainage?

It is owned by the City or Municipal Highway Agency.