US Bridges

FM over Soldier River

Good

Crawford County, Iowa · 085412001 · Structure no. 000000000130920

Built
1957
68 years old, rebuilt 1989
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
182 ft
3 main spans
Daily traffic
627
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Soldier River is a prestressed concrete stringer/multi-beam or girder carrying FM over Soldier River in Crawford County, Iowa. It was built in 1957 and reconstructed in 1989, so it is 68 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 627 vehicles a day, roughly 21% of them trucks, projected to reach 627 by 2044. The structure is 182 ft (55.5 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFM
CrossesSoldier River
Location085412001
RouteCounty Highway 0
StateIowa
Coordinates42.16789, -95.64352
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 inspectionMay 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.6 US tons
Inventory rating22.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length182 ft (55.5 m)
Longest span69 ft (21 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic627 (2022)
Projected traffic627 by 2044
Trucks21%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Soldier River built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1989.

What condition is FM over Soldier 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 May 2024.

How much traffic does FM over Soldier River carry?

About 627 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is FM over Soldier River?

The structure is 182 ft (55.5 m) long with a longest span of 69 ft (21 m) and a deck 33 ft wide.

Who owns FM over Soldier River?

It is owned by the County Highway Agency.