US Bridges

Local over Fk of Blackhawk Creek

Fair

Grundy County, Iowa · 087172401 · Structure no. 000000000164391

Built
1997
28 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
44
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Fk of Blackhawk Creek is a prestressed concrete tee beam carrying Local over Fk of Blackhawk Creek in Grundy County, Iowa. It was built in 1997, so it is 28 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 44 vehicles a day, projected to reach 44 by 2043. The structure is 44 ft (13.4 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLocal
CrossesFk of Blackhawk Creek
Location087172401
RouteCounty Highway 0
CountyGrundy County
StateIowa
Coordinates42.33991, -92.77241
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.5 US tons
Inventory rating42.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span41 ft (12.5 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44 (2022)
Projected traffic44 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Local over Fk of Blackhawk Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Local over Fk of Blackhawk 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 April 2023.

How much traffic does Local over Fk of Blackhawk Creek carry?

About 44 vehicles per day (2022 count).

How long is Local over Fk of Blackhawk Creek?

The structure is 44 ft (13.4 m) long with a longest span of 41 ft (12.5 m) and a deck 28 ft wide.

Who owns Local over Fk of Blackhawk Creek?

It is owned by the County Highway Agency.