US Bridges

FM over W Fk W Nishnabotna River

Good

Shelby County, Iowa · 079380803 · Structure no. 000000000305241

Built
1996
29 years old
Condition
Good
inspected April 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
192 ft
3 main spans
Daily traffic
309
2022 count
Owner
County
County Highway Agency

About this bridge

FM over W Fk W Nishnabotna River is a prestressed concrete continuous stringer/multi-beam or girder carrying FM over W Fk W Nishnabotna River in Shelby County, Iowa. It was built in 1996, so it is 29 years old, younger 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 309 vehicles a day, roughly 10% of them trucks, projected to reach 309 by 2043. The structure is 192 ft (58.5 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFM
CrossesW Fk W Nishnabotna River
Location079380803
RouteCounty Highway 0
StateIowa
Coordinates41.66045, -95.30228
Functional classRural Minor 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 protection8 Very GoodNo problems noted.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating81.9 US tons
Inventory rating45.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length192 ft (58.5 m)
Longest span69 ft (21 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic309 (2022)
Projected traffic309 by 2043
Trucks10%
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 W Fk W Nishnabotna River built?

It was built in 1996, making it 29 years old in 2025.

What condition is FM over W Fk W Nishnabotna 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 April 2021.

How much traffic does FM over W Fk W Nishnabotna River carry?

About 309 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is FM over W Fk W Nishnabotna River?

The structure is 192 ft (58.5 m) long with a longest span of 69 ft (21 m) and a deck 33 ft wide.

Who owns FM over W Fk W Nishnabotna River?

It is owned by the County Highway Agency.