US Bridges

Fm- L Ave over Little Sioux River

Fair

Cherokee County, Iowa · 090410106 · Structure no. 000000000107401

Built
1984
41 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
372 ft
4 main spans
Daily traffic
1,257
2022 count
Owner
County
County Highway Agency

About this bridge

Fm- L Ave over Little Sioux River is a prestressed concrete stringer/multi-beam or girder carrying Fm- L Ave over Little Sioux River in Cherokee County, Iowa. It was built in 1984, so it is 41 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 5 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 1,257 vehicles a day, projected to reach 1,257 by 2043. The structure is 372 ft (113.4 m) long and 33 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesFm- L Ave
CrossesLittle Sioux River
Location090410106
RouteCounty Highway 0
CountyCherokee County
StateIowa
Coordinates42.63476, -95.64198
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating67.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length372 ft (113.4 m)
Longest span96 ft (29.3 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,257 (2022)
Projected traffic1,257 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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- L Ave over Little Sioux River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Fm- L Ave over Little Sioux 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 August 2023.

How much traffic does Fm- L Ave over Little Sioux River carry?

About 1,257 vehicles per day (2022 count).

How long is Fm- L Ave over Little Sioux River?

The structure is 372 ft (113.4 m) long with a longest span of 96 ft (29.3 m) and a deck 33 ft wide.

Who owns Fm- L Ave over Little Sioux River?

It is owned by the County Highway Agency.