US Bridges

FM over Little Sioux Rvr W Fork

Good

Cherokee County, Iowa · 091421502 · Structure no. 000000000108541

Built
2008
17 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete Continuous
Length
110 ft
3 main spans
Daily traffic
838
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Little Sioux Rvr W Fork is a concrete continuous slab carrying FM over Little Sioux Rvr W Fork in Cherokee County, Iowa. It was built in 2008, so it is 17 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 838 vehicles a day, roughly 32% of them trucks, projected to reach 838 by 2043. The structure is 110 ft (33.5 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM
CrossesLittle Sioux Rvr W Fork
Location091421502
RouteCounty Highway 0
StateIowa
Coordinates42.70316, -95.80072
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
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 alignment8: Equal to present desirable criteria
Operating rating73.4 US tons
Inventory rating44.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length110 ft (33.5 m)
Longest span43 ft (13.1 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic838 (2022)
Projected traffic838 by 2043
Trucks32%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$30,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Little Sioux Rvr W Fork built?

It was built in 2008, making it 17 years old in 2025.

What condition is FM over Little Sioux Rvr W Fork 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 August 2023.

How much traffic does FM over Little Sioux Rvr W Fork carry?

About 838 vehicles per day (2022 count), of which roughly 32% are trucks.

How long is FM over Little Sioux Rvr W Fork?

The structure is 110 ft (33.5 m) long with a longest span of 43 ft (13.1 m) and a deck 33 ft wide.

Who owns FM over Little Sioux Rvr W Fork?

It is owned by the County Highway Agency.