US Bridges

FM over North Raccoon River

Fair

Dallas County, Iowa · 081280801 · Structure no. 000000000132535

Built
1980
45 years old
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
416 ft
5 main spans
Daily traffic
139
2022 count
Owner
County
County Highway Agency

About this bridge

FM over North Raccoon River is a prestressed concrete continuous stringer/multi-beam or girder carrying FM over North Raccoon River in Dallas County, Iowa. It was built in 1980, so it is 45 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 6 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 139 vehicles a day, projected to reach 139 by 2043. The structure is 416 ft (126.8 m) long and 31 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesFM
CrossesNorth Raccoon River
Location081280801
RouteCounty Highway 0
StateIowa
Coordinates41.84939, -94.14048
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2022
Inspection intervalevery 48 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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating71.5 US tons
Inventory rating39.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length416 ft (126.8 m)
Longest span96 ft (29.3 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic139 (2022)
Projected traffic139 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 North Raccoon River built?

It was built in 1980, making it 45 years old in 2025.

What condition is FM over North 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 North Raccoon River carry?

About 139 vehicles per day (2022 count).

How long is FM over North Raccoon River?

The structure is 416 ft (126.8 m) long with a longest span of 96 ft (29.3 m) and a deck 31 ft wide.

Who owns FM over North Raccoon River?

It is owned by the County Highway Agency.