US Bridges

FM over Minerva Creek

Good

Marshall County, Iowa · 084201102 · Structure no. 000000000243771

Built
2001
24 years old
Condition
Good
inspected November 2021
Type
Slab
Concrete Continuous
Length
128 ft
3 main spans
Daily traffic
501
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Minerva Creek is a concrete continuous slab carrying FM over Minerva Creek in Marshall County, Iowa. It was built in 2001, so it is 24 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 501 vehicles a day, roughly 18% of them trucks, projected to reach 501 by 2041. The structure is 128 ft (39 m) long and 39 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesFM
CrossesMinerva Creek
Location084201102
RouteCounty Highway 0
StateIowa
Coordinates42.10545, -93.15623
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.6 US tons
Inventory rating58.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length128 ft (39 m)
Longest span49 ft (14.9 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic501 (2022)
Projected traffic501 by 2041
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 2001, making it 24 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 November 2021.

How much traffic does FM over Minerva Creek carry?

About 501 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is FM over Minerva Creek?

The structure is 128 ft (39 m) long with a longest span of 49 ft (14.9 m) and a deck 39 ft wide.

Who owns FM over Minerva Creek?

It is owned by the County Highway Agency.