US Bridges

FM over South Raccoon River

Fair

Guthrie County, Iowa · 079312609 · Structure no. 000000000167940

Built
1969
56 years old
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
181 ft
3 main spans
Daily traffic
219
2022 count
Owner
County
County Highway Agency

About this bridge

FM over South Raccoon River is a prestressed concrete stringer/multi-beam or girder carrying FM over South Raccoon River in Guthrie County, Iowa. It was built in 1969, so it is 56 years old, older 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 219 vehicles a day, roughly 13% of them trucks, projected to reach 219 by 2042. The structure is 181 ft (55.2 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFM
CrossesSouth Raccoon River
Location079312609
RouteCounty Highway 0
StateIowa
Coordinates41.63051, -94.41989
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating58.3 US tons
Inventory rating24.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length181 ft (55.2 m)
Longest span69 ft (21 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic219 (2022)
Projected traffic219 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over South Raccoon River built?

It was built in 1969, making it 56 years old in 2025.

What condition is FM over South 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 2022.

How much traffic does FM over South Raccoon River carry?

About 219 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is FM over South Raccoon River?

The structure is 181 ft (55.2 m) long with a longest span of 69 ft (21 m) and a deck 30 ft wide.

Who owns FM over South Raccoon River?

It is owned by the County Highway Agency.