US Bridges

FM over Minerva Creek

Good

Hardin County, Iowa · 086220902 · Structure no. 000000000175141

Built
1998
27 years old
Condition
Good
inspected March 2022
Type
Arch - Deck
Concrete
Length
32 ft
1 main span
Daily traffic
236
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Minerva Creek is a concrete arch - deck carrying FM over Minerva Creek in Hardin County, Iowa. It was built in 1998, so it is 27 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 236 vehicles a day, roughly 22% of them trucks, projected to reach 236 by 2042. The structure is 32 ft (9.8 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFM
CrossesMinerva Creek
Location086220902
RouteCounty Highway 0
StateIowa
Coordinates42.27845, -93.42447
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating64.8 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width43 ft (13.2 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic236 (2022)
Projected traffic236 by 2042
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 FM over Minerva Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is FM 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 March 2022.

How much traffic does FM over Minerva Creek carry?

About 236 vehicles per day (2022 count), of which roughly 22% are trucks.

How long is FM over Minerva Creek?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 43 ft wide.

Who owns FM over Minerva Creek?

It is owned by the County Highway Agency.