US Bridges

FM over Prairie Creek

Good

Benton County, Iowa · 082102608 · Structure no. 000000000070321

Built
2002
23 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
204 ft
3 main spans
Daily traffic
206
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Prairie Creek is a prestressed concrete stringer/multi-beam or girder carrying FM over Prairie Creek in Benton County, Iowa. It was built in 2002, so it is 23 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 206 vehicles a day, roughly 13% of them trucks, projected to reach 206 by 2043. The structure is 204 ft (62.2 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFM
CrossesPrairie Creek
Location082102608
RouteCounty Highway 0
StateIowa
Coordinates41.88647, -91.98754
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.8 US tons
Inventory rating49.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length204 ft (62.2 m)
Longest span72 ft (21.9 m)
Deck width31 ft (9.4 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic206 (2022)
Projected traffic206 by 2043
Trucks13%
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 Prairie Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is FM over Prairie 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 April 2023.

How much traffic does FM over Prairie Creek carry?

About 206 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is FM over Prairie Creek?

The structure is 204 ft (62.2 m) long with a longest span of 72 ft (21.9 m) and a deck 31 ft wide.

Who owns FM over Prairie Creek?

It is owned by the County Highway Agency.