US Bridges

Fm- Y Ave over Little Maple River

PoorPosted for load

Cherokee County, Iowa · 090392502 · Structure no. 000000000107141

Built
1971
54 years old
Condition
Poor
inspected August 2023
Type
Slab
Concrete Continuous
Length
78 ft
3 main spans
Daily traffic
439
2022 count
Owner
County
County Highway Agency

About this bridge

Fm- Y Ave over Little Maple River is a concrete continuous slab carrying Fm- Y Ave over Little Maple River in Cherokee County, Iowa. It was built in 1971, so it is 54 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for other load-capacity restriction.

It carries about 439 vehicles a day, roughly 23% of them trucks, projected to reach 439 by 2043. The structure is 78 ft (23.8 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFm- Y Ave
CrossesLittle Maple River
Location090392502
RouteCounty Highway 0
StateIowa
Coordinates42.58284, -95.40768
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.1 US tons
Inventory rating15.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length78 ft (23.8 m)
Longest span29 ft (8.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic439 (2022)
Projected traffic439 by 2043
Trucks23%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Fm- Y Ave over Little Maple River built?

It was built in 1971, making it 54 years old in 2025.

What condition is Fm- Y Ave over Little Maple River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does Fm- Y Ave over Little Maple River carry?

About 439 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is Fm- Y Ave over Little Maple River?

The structure is 78 ft (23.8 m) long with a longest span of 29 ft (8.8 m) and a deck 30 ft wide.

Who owns Fm- Y Ave over Little Maple River?

It is owned by the County Highway Agency.