US Bridges

Local over Minerva Creek

Good

Hardin County, Iowa · 086221501 · Structure no. 000000000175171

Built
2004
21 years old
Condition
Good
inspected February 2023
Type
Tee Beam
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
10
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Minerva Creek is a prestressed concrete tee beam carrying Local over Minerva Creek in Hardin County, Iowa. It was built in 2004, so it is 21 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10 vehicles a day, roughly 20% of them trucks, projected to reach 10 by 2043. The structure is 55 ft (16.8 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLocal
CrossesMinerva Creek
Location086221501
RouteCounty Highway 0
StateIowa
Coordinates42.2671, -93.38802
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.7 US tons
Inventory rating33.2 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span51 ft (15.5 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2043
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Minerva Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Local over Minerva Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does Local over Minerva Creek carry?

About 10 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is Local over Minerva Creek?

The structure is 55 ft (16.8 m) long with a longest span of 51 ft (15.5 m) and a deck 28 ft wide.

Who owns Local over Minerva Creek?

It is owned by the County Highway Agency.