US Bridges

FM over S Raccoon River

PoorPosted for load

Guthrie County, Iowa · 079312302 · Structure no. 000000000167930

Built
1959
66 years old
Condition
Poor
inspected November 2023
Type
Truss - Thru
Steel
Length
244 ft
2 main spans
Daily traffic
20
2022 count
Owner
County
County Highway Agency

About this bridge

FM over S Raccoon River is a steel truss - thru carrying FM over S Raccoon River in Guthrie County, Iowa. It was built in 1959, so it is 66 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, projected to reach 20 by 2043. The structure is 244 ft (74.4 m) long and 21 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFM
CrossesS Raccoon River
Location079312302
RouteCounty Highway 0
StateIowa
Coordinates41.64125, -94.43501
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, 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 2023
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating22.6 US tons
Inventory rating12.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadH 15
Structure length244 ft (74.4 m)
Longest span90 ft (27.4 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2022)
Projected traffic20 by 2043
Trucks0%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over S Raccoon River built?

It was built in 1959, making it 66 years old in 2025.

What condition is FM over S Raccoon River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2023.

How much traffic does FM over S Raccoon River carry?

About 20 vehicles per day (2022 count).

How long is FM over S Raccoon River?

The structure is 244 ft (74.4 m) long with a longest span of 90 ft (27.4 m) and a deck 21 ft wide.

Who owns FM over S Raccoon River?

It is owned by the County Highway Agency.