US Bridges

FM over Middle Raccoon River

Fair

Guthrie County, Iowa · 079300906 · Structure no. 000000000167691

Built
1992
33 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
321 ft
3 main spans
Daily traffic
927
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Middle Raccoon River is a prestressed concrete stringer/multi-beam or girder carrying FM over Middle Raccoon River in Guthrie County, Iowa. It was built in 1992, so it is 33 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 5 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 927 vehicles a day, roughly 14% of them trucks, projected to reach 927 by 2043. The structure is 321 ft (97.8 m) long and 33 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesFM
CrossesMiddle Raccoon River
Location079300906
RouteCounty Highway 0
StateIowa
Coordinates41.66711, -94.3573
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating67.7 US tons
Inventory rating37.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length321 ft (97.8 m)
Longest span107 ft (32.6 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic927 (2022)
Projected traffic927 by 2043
Trucks14%
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$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Middle Raccoon River built?

It was built in 1992, making it 33 years old in 2025.

What condition is FM over Middle Raccoon River 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 November 2023.

How much traffic does FM over Middle Raccoon River carry?

About 927 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is FM over Middle Raccoon River?

The structure is 321 ft (97.8 m) long with a longest span of 107 ft (32.6 m) and a deck 33 ft wide.

Who owns FM over Middle Raccoon River?

It is owned by the County Highway Agency.