US Bridges

FM over N Raccoon River

Good

Dallas County, Iowa · 080281309 · Structure no. 000000000132080

Built
1953
72 years old, rebuilt 1991
Condition
Good
inspected November 2022
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
537 ft
5 main spans
Daily traffic
289
2022 count
Owner
County
County Highway Agency

About this bridge

FM over N Raccoon River is a steel continuous stringer/multi-beam or girder carrying FM over N Raccoon River in Dallas County, Iowa. It was built in 1953 and reconstructed in 1991, so it is 72 years old, older 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 289 vehicles a day, roughly 12% of them trucks, projected to reach 289 by 2043. The structure is 537 ft (163.7 m) long and 33 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesFM
CrossesN Raccoon River
Location080281309
RouteCounty Highway 0
StateIowa
Coordinates41.74182, -94.05673
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2022
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47.5 US tons
Inventory rating28.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length537 ft (163.7 m)
Longest span117 ft (35.7 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic289 (2022)
Projected traffic289 by 2043
Trucks12%
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over N Raccoon River built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1991.

What condition is FM over N Raccoon River 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 November 2022.

How much traffic does FM over N Raccoon River carry?

About 289 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is FM over N Raccoon River?

The structure is 537 ft (163.7 m) long with a longest span of 117 ft (35.7 m) and a deck 33 ft wide.

Who owns FM over N Raccoon River?

It is owned by the County Highway Agency.